2024-03-29T14:18:19Z
http://futureenergysp.com/index.php/tre/oai
oai:ojs.futureenergysp.com:article/18
2017-01-20T20:33:39Z
tre:ART
driver
nmb a2200000Iu 4500
"160101 2016 eng "
2376-2144
2376-2136
dc
Clavulanic Acid Production by Streptomyces clavuligerus using Solid State Fermentation on Polyurethane Foam
Wang, Hui
State Key Lab of Biochemistry, Institute of Process Engineering, Chinese Academy of Sciences, Beijing
Chen, Hongzhang
State Key Lab of Biochemistry, Institute of Process Engineering, Chinese Academy of Sciences, Beijing
Inert support; Solid state fermentation; Clavulanic acid; Polyurethane foam
Clavulanic acid (CA), a metabolite of Streptomyces clavuligerus, is a potent β-lactamase inhibitor. In this study, polyurethane foam (PUF) was used as inert solid support to produce clavulanic acid by solid state fermentation (SSF). Maximal CA yield of 263 µg/ml was obtained at pH 6.5, incubation temperature 29°C, 10 ml medium per 3 g PUF, 0.015% added glycerol, 2% added lithium chloride (LiCl), and 2 g/L added ornithine. Under the same conditions, the yield of CA produced by SSF on PUF is apparently higher than that by submerged fermentation (SMF). In addition, CA produced by using this method is of higher purity and easier to be extracted.Â
Citation: Wang, H. and Chen, H. (2016). Clavulanic Acid Production by Streptomyces clavuligerus using Solid State Fermentation on Polyurethane Foam. Trends in Renewable Energy, 2(1), 2-12. DOI: 10.17737/tre.2016.2.1.0018
More information about the Future Energy Service and Publishing
2016-03-31 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/18
Trends in Renewable Energy; Vol 2, No 1 (2016)
eng
Copyright (c) 2016 Hui Wang and Hongzhang Chen
oai:ojs.futureenergysp.com:article/48
2018-05-13T02:53:03Z
tre:RIEECS2017
driver
nmb a2200000Iu 4500
"180424 2018 eng "
2376-2144
2376-2136
dc
Transient Analysis of Quasi Oppositional Based Lightning Search Algorithm Optimized PID Controller in Isolated Small Hydro Power Plant
Kaushaley, Shashikant
National Institute Of Technology, Raipur
Shaw, Binod
National Institute Of Technology, Raipur
Lightning Search Algorithm (LSA); Quasi Oppositional Based LSA (QOLSA); Small Hydro Power Plant (SHP); Proportional Integral Derivative(PID)
In this paper, Small Hydro Plant (SHP) of 1.3 MW is simulated with two conventional PID controllers in excitation system and governor to enhance the capability to handle the transiency of the generator. Excitation voltage control and turbine speed control are the two basic control schemes, to regulate reactive power or terminal voltage and real power or frequency respectively. The selection parameters of the PID controllers are significant to enhance the performance of the system. Quasi Oppositional BaseÂÂd Lightning Search Algorithm (QOLSA) is validated in this paper to optimize the PID controllers over LSA and PSO. Renewable energy source like SHP is environment friendly and very imperative to meet the vigorously growing load demand. The simulation of the SHP is established in MATLAB/SIMULINK environment. Finally, QOLSA optimized PID controller contributes better control in terminal voltage and power over LSA and PSO algorithms. Â
Citation:Â Kaushaley, S., and Shaw, B. (2018). Transient Analysis of Quasi Oppositional Based Lightning Search Algorithm Optimized PID Controller in Isolated Small Hydro Power Plant. Trends in Renewable Energy, 4, 34-43. DOI: 10.17737/tre.2018.4.3.0048
More information about the Future Energy Service and Publishing
2018-04-22 00:00:00
application/pdf
http://futureenergysp.com/index.php/tre/article/view/48
Trends in Renewable Energy; Vol 4 (2018): Special Issue on International Conference on Recent Innovations in Electrical, Electronics and Communication Systems (RIEECS 2017)
eng
Copyright (c) 2018 Shashikant Kaushaley and Binod Shaw
oai:ojs.futureenergysp.com:article/111
2020-03-28T04:02:39Z
tre:ART
driver
nmb a2200000Iu 4500
"200212 2020 eng "
2376-2144
2376-2136
dc
A Comprehensive Study on Re-arrangement of Modules Based TCT Configurations of Partial Shaded PV Array with Shade Dispersion Method
BALARAJU, V
SV University, Tirupati, Andhrapradesh
Chengaiah, Ch.
Photovoltaic cells and modules; Array output power; Interconnections; Mismatch power losses; Fill-factor; Efficiency; Partial shading
The conventional Total-Cross-Tied (TCT) Solar photovoltaic (SPV) array configuration has the highest power output as compared to other configurations or topologies in most cases of partial shading. But the performance of TCT configuration is affected under shading conditions, resulting in multiple peaks occurring in the output PV characteristics. To improve the performance of TCT array configuration under different shading scenarios, it is only necessary to reposition or rearrange the PV modules in the TCT Solar PV array based on the arrangement of puzzle numbers, without altering the electrical contacts of the TCT array configuration. The main objective of this study is to investigate the performance of rearrangement of modules in SPV array based new TCT array configurations with shade dispersion technique and compare the global maximum peak power (GMPP) of SPV array, mismatch losses, Fill-Factor, efficiency and number of required electrical connections or ties between array modules with proposed optimal arrangement of modules under shading (non-uniform irradiance) conditions. For this study, one uniform irradiance case and total 14 partial shading patterns were considered. MATLAB/Simulink software was used for modeling and simulation of 6×6 size different rearrangement based TCT array and proposed optimal SPV array configurations.
Citation:Â BALARAJU, V., and Chengaiah, C. (2020). A Comprehensive Study on Re-arrangement of Modules Based TCT Configurations of Partial Shaded PV Array with Shade Dispersion Method. Trends in Renewable Energy, 6, 37-60. DOI: 10.17737/tre.2020.6.1.00111
More information about the Future Energy Service and Publishing
2020-01-02 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/111
Trends in Renewable Energy; Vol 6, No 1 (2020)
eng
Copyright (c) 2020 V. Bala Raju and Dr. Ch. Chengaiah
oai:ojs.futureenergysp.com:article/150
2023-03-21T02:38:19Z
tre:ART
driver
nmb a2200000Iu 4500
"230115 2023 eng "
2376-2144
2376-2136
dc
Effects of Angstrom-Prescott and Hargreaves-Samani Coefficients on Climate Forcing and Solar PV Technology Selection in West Africa
Agbor, Mfongang Erim
University of Calabar
Udo, Sunday O.
University of Calabar
Ewona, Igwe O.
Nwokolo, Samuel Chukwujindu
University of Calabar, Calabar, Nigeria
Ogbulezie, Julie C.
University of Calabar
Amadi, Solomon Okechukwu
Alex Ekwueme Federal University, Ndufu-Alike
Billy, Utibe Akpan
University of Calabar
Ångström-Prescott coefficient; Hargreaves-Samani coefficient; Global solar radiation; Solar PV technologies; Climate forcing
We evaluated and compared the performance of simulated Angström-Prescott (AP) and Hargreaves-Samani (HS) models on monthly and annual timescales using generalized datasets covering the entire West African region. The fitted AP model yielded more efficient parameters of a = 0.366 and b = 0.459, whereas the HS model produced a 0.216 coefficient based on an annual timescale, which is more suitable in the region compared to coefficients recommended by the Food and Agriculture Organization (FAO) (a = 0.25 and b = 0.5) and HS (0.17), respectively. Employing the FAO and HS recommended coefficients will introduce a relative percentage error (RPE) of 18.388% and 27.19% compared to the RPEs of 0.0014% and 0.1036% obtained in this study, respectively. When considering time and resource availability in the absence of ground-measured datasets, the coefficients obtained in this study can be used for predicting global solar radiation within the region. According to the AP and HS coefficients, the polycrystalline module (p-Si) is more reliable than the monocrystalline module (m-Si) because the p-Si module has a higher tendency to withstand the high temperatures projected to affect the region due to its higher intrinsic properties based on the AP and HS coefficients assessment in the region.
Citation: Agbor, M. E., Udo, S. O., Ewona, I. O., Nwokolo, S. C., Ogbulezie, J. C., Amadi, S. O., and Billy, U. A. (2023). Effects of Angstrom-Prescott and Hargreaves-Samani Coefficients on Climate Forcing and Solar PV Technology Selection in West Africa. Trends in Renewable Energy, 9, 78-106. DOI: 10.17737/tre.2023.9.1.00150
More information about the Future Energy Service and Publishing
2023-03-20 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/150
Trends in Renewable Energy; Vol 9, No 1 (2023)
eng
Copyright (c) 2023 Mfongang Erim Agbor, Sunday O. Udo, Igwe O. Ewona, Samuel Chukwujindu Nwokolo, Julie C. Ogbulezie, Solomon Okechukwu Amadi, Utibe Akpan Billy
oai:ojs.futureenergysp.com:article/13
2017-10-12T04:07:30Z
tre:ART
driver
nmb a2200000Iu 4500
"170101 2017 eng "
2376-2144
2376-2136
dc
A Comparison of Energy Consumption in Hydrothermal Liquefaction and Pyrolysis of Microalgae
Zhang, Bo
Wu, Jinsheng
Deng, Zhao
Yang, Changyan
Cui, Chang
Ding, Yigang
Microalgae; Energy Consumption; Pyrolysis; Hydrothermal Liquefaction (HTL); Microwave-assisted pyrolysis; Thermal Drying
The energy requirements for converting one tonne (1,000 kg) of Chlorella slurry of 20 wt% solids via fast pyrolysis, microwave-assisted pyrolysis (MAP), and hydrothermal liquefaction (HTL) were compared. Drying microalgae prior to pyrolysis by using a spray drying process with a 50% energy efficiency required an energy input of 4,107 MJ, which is higher than the energy content (4,000 MJ) of raw microalgae. The energy inputs to conduct fast pyrolysis, MAP, and HTL reactions were 504 MJ (50% efficient), 1,057 MJ (~25% efficient), and 2,776 MJ (50% efficient), respectively. The overall energy requirement of fast pyrolysis is theoretically about 1.6 times more than that of HTL. The energy recovery ratios for fast pyrolysis, MAP, and HTL of microalgae were 78.7%, 57.2%, and 89.8%, respectively. From the energy balance point of view, hydrothermal liquefaction is superior, and it achieved a higher energy recovery with a less energy cost. To improve the pyrolysis process, developing drying devices powered by renewable energies, optimizing the pyrolysis process (specifically microwave-assisted), and improving the energy efficiency of equipment are options.
Citation: Zhang, B., Wu, J., Deng, Z.,  Yang, C., Cui, C., and Ding, Y. (2017). A Comparison of Energy Consumption in Hydrothermal Liquefaction and Pyrolysis of Microalgae. Trends in Renewable Energy, 3(1), 76-85. DOI: 10.17737/tre.2017.3.1.0013
More information about the Future Energy Service and Publishing
2017-01-01 07:29:05
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/13
Trends in Renewable Energy; Vol 3, No 1 (2017)
eng
Copyright (c) 2017 Bo Zhang, et al.
oai:ojs.futureenergysp.com:article/78
2018-10-05T21:19:46Z
tre:ART
driver
nmb a2200000Iu 4500
"180827 2018 eng "
2376-2144
2376-2136
dc
Development of Feed-Forward Back-Propagation Neural Model to Predict the Energy and Exergy Analysis of Solar Air Heater
Ghritlahre, Harish Kumar
Solar air heater; Energy analysis; Exergy analysis; Artificial Neural Network; Multi-layer perceptron
In the present work, Artificial Neural Network (ANN) model has been developed to predict the energy and exergy efficiency of a roughened solar air heater (SAH). Total fifty data sets of samples, obtained by conducting experiments on SAHs with three different specification of wire-rib roughness on the absorber plates, have been used in this work. These experimental data and calculated values of thermal efficiency and exergy efficiency have been used to develop an ANN model. Levenberg-Marquardt (LM) and Scaled Conjugate Gradient (SCG) learning algorithm were used to train the proposed ANN model. Six numbers of neurons were found with LM learning algorithm in the hidden layer as the optimal value on the basis of statistical error analysis. In the input layer, the time of experiments, mass flow rate, ambient temperature, mean temperature of air, absorber plate temperature and solar radiation intensity have been taken as input parameters; and energy efficiency and exergy efficiency have been taken as output parameters in the output layer. The 6-6-2 neural model has been obtained as the optimal model for prediction. Performance predictions using ANN were compared with the experimental data and a close agreement was observed. Statistical error analysis was used to evaluate the results.
Citation:Â Ghritlahre, H. K. (2018). Development of feed-forward back-propagation neural model to predict the energy and exergy analysis of solar air heater. Trends in Renewable Energy, 4, 213-235. DOI: 10.17737/tre.2018.4.2.0078
More information about the Future Energy Service and Publishing
2018-10-05 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/78
Trends in Renewable Energy; Vol 4, No 2 (2018)
eng
Copyright (c) 2018 Harish Kumar Ghritlahre
oai:ojs.futureenergysp.com:article/127
2021-11-04T18:25:38Z
tre:ART
driver
nmb a2200000Iu 4500
"210523 2021 eng "
2376-2144
2376-2136
dc
Pyrolysis-Gas Chromatography/Mass Spectrometry Analysis of Oils from Different Sources
Qiu, Qi
College of Chemistry and Environmental EngineeringShenzhen University
Zhang, Yiting
Pyrolysis; Gutter oil; GC/MS; Waste oil; Olefins
Regenerated gutter oil (i.e., waste oil) accounts for 10% of the edible oil market, which has caused serious food safety issues. Currently, there is no standard protocol for the identification of the gutter oil. In this study, the pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) method was employed to analyze eleven oil samples including edible vegetable oils (tea oil, corn oil, olive oil, sunflower oil, peanut oil and blend vegetable oil) and waste oils (used frying oil, lard, chicken fat, inferior oil and kitchen waste grease). Three factors of pyrolysis temperature, reaction time and sample volume were investigated to optimize the analytical parameters. The optimal pyrolysis conditions were determined to be 600°C, 1 min and an injection volume of 0.3 μL. Five characteristic components (tetradecane, z,z-9,12-octadecadienoic acid, decanoic acid-2-propenyl ester, 17-octadecenoic acid, and z-9-octadecenoic acid) were found in all oil samples. The existence of C11-C16 olefins in the pyrolytic products of the animal fats and the other low-quality oils could be utilized to distinguish vegetable oils from gutter oils.
Â
More information about the Future Energy Service and Publishing
2021-12-31 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/127
Trends in Renewable Energy; Vol 7 (2021)
eng
Copyright (c) 2021 Qi Qiu, Yiting Zhang
oai:ojs.futureenergysp.com:article/10
2017-01-20T23:01:40Z
tre:ED
driver
nmb a2200000Iu 4500
"150410 2015 eng "
2376-2144
2376-2136
dc
What Future for the Renewable Energy
Santacesaria, Elio
Professor of Industrial Chemistry, CEO of Eurochem Engineering srl
Renewable Energy; Kippur war; Petroleum; Sustainability; Renewable Energy Sources
    In 1973, after the Kippur war, a considerable increase of the petroleum price occurred, because, Arabian countries decided to reduce the extraction and export of this raw material. It was the first time that petroleum price was imposed not by the market but as a consequence of a political unilateral decision. The governments of the occidental countries reacted to this situation by promoting researches on the use of coal as a possible substitute of petroleum. In Italy, for example, a national “Energy†project based on the use of coal had been launched and funded covering a period of about 10 years. Although, after some years the situation turned to the normality and the price of petroleum was consistently lowered rendering not convenient the use of coal, thanks to the performed studies, the scientists have learned to obtain from coal all the necessary components to satisfy the energetic needs. Coal was chosen as a possible alternative for the abundance of this raw material and, because, at that time the consume of petroleum was relatively limited and the environmental problems, deriving from a majestic use of petroleum, were not so important as today. In the last century, the petroleum consumption increased exponentially and the growing economy of the countries under development greatly contributed and still contributes to this increment. Gradually, the anxiety for the depletion of petroleum as raw material, which remedy could be clearly the use of coal, was substituted by the anxiety for the sustainability of the consequences of a continuous increase of the petroleum consumption on both the environment and the quality of the life. Under this aspect, coal is worse than petroleum and cannot be considered as a possible substitute.
    Sustainability gradually became the cultural driving force for the development of the “Renewable Energy Sources†and new concepts like Bio-Refineries and Renewable Feedstock were diffused in a lot of publications and books and the governments funded many researches on the subject. However, it is opportune to remember that the consume of petroleum in the world is greater than 4 billion tons per year with only 4-5% destined to the chemicals production. The big economic interests, accompanying the commerce of petroleum, hold-down the development of any possible alternative. The recent intensive production of shale oil in United States, for example, has been contrasted by a strong decrease of the petroleum price produced in Arabia. In the meantime, a large availability of petroleum at low cost strongly reduced or blocked the production of bio-based fuels as biodiesel and bio-ethanol. The conclusion is that nowadays, Renewable Energy Sources cannot compete with petroleum for both the volume of production and price of the energy but remain the only feasible alternative if inserted in a revolutionary change of the way of life in which the man look for an equilibrium with the nature without renouncing to the wellness but certainly changing the previous habits. This is, at the same time a cultural, scientific but above all a political challenge to save the planet.
Â
Citation:Â Santacesaria, E. (2015). "What future for the Renewable Energy." Trends in Renewable Energy, 1(2), 57-58. DOI: 10.17737/tre.2015.1.2.0010
More information about the Future Energy Service and Publishing
2015-04-10 00:00:00
Editorial
application/pdf
http://futureenergysp.com/index.php/tre/article/view/10
Trends in Renewable Energy; Vol 1, No 2 (2015)
eng
Copyright (c) 2015 Elio Santacesaria
oai:ojs.futureenergysp.com:article/45
2018-05-03T13:56:10Z
tre:ART
driver
nmb a2200000Iu 4500
"171229 2017 eng "
2376-2144
2376-2136
dc
Main Line Fault Localization Methodology (MLFLM) in Smart Grid – The Underground Medium- and Low-Voltage Broadband over Power Lines Networks Case
Lazaropoulos, Athanasios G.
http://orcid.org/0000-0002-1940-6989
Smart Grid; Intelligent Energy Systems; Broadband over Power Lines (BPL) Networks;Power Line Communications (PLC); Faults; Fault Analysis; Fault Localization; Distribution Power Grids
This paper assesses the performance of the main line fault localization methodology (MLFLM) when its application is extended to underground medium- and low-voltage broadband over power lines (UN MV and UN LV BPL) networks, say UN distribution BPL networks. Â This paper focuses on the localization of main distribution line faults across UV MV and UN LV BPL networks. By extending the MLFLM procedure, which has successfully been applied to overhead medium-voltage (OV MV) BPL networks, the performance assessment of MLFLM is investigated with respect to the nature of the main distribution line faults, the intensity of the measurement differences and the fault location across the main distribution lines of the underground distribution power grid (either MV or LV grid).
Citation: Lazaropoulos, A. G. (2017). Main Line Fault Localization Methodology (MLFLM) in Smart Grid – The Underground Medium- and Low-Voltage Broadband over Power Lines Networks Case. Trends in Renewable Energy, 4, 15-42. DOI: 10.17737/tre.2018.4.1.0045
More information about the Future Energy Service and Publishing
2017-11-24 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/45
Trends in Renewable Energy; Vol 4, No 1 (2018)
eng
Copyright (c) 2018 Athanasios G. Lazaropoulos
oai:ojs.futureenergysp.com:article/99
2019-12-05T04:28:17Z
tre:ART
driver
nmb a2200000Iu 4500
"190815 2019 eng "
2376-2144
2376-2136
dc
Virtual Indicative Broadband over Power Lines Topologies for Respective Subclasses by Adjusting Channel Attenuation Statistical Distribution Parameters of Statistical Hybrid Models (Class Maps) – Part 1: Theory
Lazaropoulos, Athanasios G.
http://orcid.org/0000-0002-1940-6989
Smart Grid; Broadband over Power Lines (BPL) networks; Power Line Communications (PLC); Distribution Power Grids; Capacity; Statistics; Modeling
Based on a set of indicative overhead and underground medium voltage broadband over power lines (OV and UN MV BPL) topologies, initial statistical hybrid model (iSHM) and modified statistical hybrid model (mSHM) are statistical channel models suitable for the distribution BPL networks. Both iSHM and mSHM statistically process channel attenuation and capacity values of assumed indicative OV and UN MV BPL topologies by exploiting channel attenuation statistical distributions (CASDs). iSHM exploits a set of well-known CASDs (i.e., Gaussian, Lognormal, Wald, Weibull and Gumbel CASDs) while mSHM exploits the Empirical CASD. Each indicative OV and UN MV BPL topology acts as the representative one of a respective OV and UN MV BPL topology class (i.e., rural, suburban, urban and aggravated urban class) that consists of a number of respective statistically equivalent OV and UN MV BPL topologies. The contribution of this paper is the theoretical framework presentation of the creation of new virtual indicative OV and UN MV BPL topologies by appropriately adjusting the parameters of iSHM and mSHM CASDs. These new virtual indicative OV and UN MV BPL topologies will enrich the respective today’s OV and UN MV BPL topology classes with respective OV and UN MV BPL topology subclasses while each subclass will be enriched by a number of respective statistically equivalent OV and UN MV BPL topologies. The procedure of defining new virtual distribution BPL topologies by applying iSHM and mSHM will allow a better capacity study of OV and UN MV BPL topology classes. Apart from the definition procedure of the virtual indicative OV MV and UN MV BPL topologies and their respective virtual subclasses by adjusting CASD parameters of iSHM and mSHM, the contribution of this paper is the class map that analytically describes the taxonomy of distribution BPL topology classes and subclasses.
Citation: Lazaropoulos, A. G. (2019). Virtual Indicative Broadband over Power Lines Topologies for Respective Subclasses by Adjusting Channel Attenuation Statistical Distribution Parameters of Statistical Hybrid Models (Class Maps) – Part 1: Theory. Trends in Renewable Energy, 5, 237-257. DOI: 10.17737/tre.2019.5.3.0099
More information about the Future Energy Service and Publishing
2019-07-26 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/99
Trends in Renewable Energy; Vol 5, No 3 (2019)
eng
Copyright (c) 2019 Athanasios G. Lazaropoulos
oai:ojs.futureenergysp.com:article/144
2022-11-08T03:55:17Z
tre:REV
driver
nmb a2200000Iu 4500
"220709 2022 eng "
2376-2144
2376-2136
dc
A Review of the Effect of Compressed Natural Gas (CNG) on Combustion and Emission Performance of Internal Combustion Engines
Liang, Yufan
North China University of Water Resources and Electric Power
Clean Energy; Compressed Natural Gas (CNG); Combustion and Emission Performance; Improvement Methods
In order to reduce the environmental pollution caused by conventional internal combustion engines, the application of natural gas in internal combustion engines and the combustion and emission performance of natural gas internal combustion engines have been widely studied by scholars. Because the physical and chemical properties of natural gas are different from those of conventional gasoline or diesel, the operating performance of natural gas internal combustion engines in practical applications is also different from that of conventional internal combustion engines. This paper presents the physicochemical properties of compressed natural gas, the two combustion modes (premixed combustion and non-homogeneous diffusion combustion) in internal combustion engines and the effect of compressed natural gas on the performance of internal combustion engines. Compared with gasoline engines, natural gas internal combustion engines have relatively lower power and higher effective power loss; lower effective fuel consumption rate in terms of economy; and lower CO and NOx emissions than gasoline engines in terms of emissions.
Citation: Liang, Y. (2022). A Review of the Effect of Compressed Natural Gas (CNG) on Combustion and Emission Performance of Internal Combustion Engines. Trends in Renewable Energy, 8, 119-129. DOI: 10.17737/tre.2022.8.2.00144
More information about the Future Energy Service and Publishing
2022-12-01 00:00:00
Peer-reviewed article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/144
Trends in Renewable Energy; Vol 8, No 2 (2022)
eng
Copyright (c) 2022 Yufan Liang
oai:ojs.futureenergysp.com:article/24
2017-01-20T19:38:49Z
tre:ED
driver
nmb a2200000Iu 4500
"160715 2016 eng "
2376-2144
2376-2136
dc
Green Technology and Sustainable Development of Renewable Energy
Yusup, Suzana
Associate Prof., Biomass Processing Laboratory, Centre for Biofuel and Biochemical Research, Green Technology Mission Oriented Research, Universiti Teknologi PETRONAS
Carbon dioxide (CO2) and other greenhouse gases (GHG) emissions, which cause global warming, have become a major worldwide concern with ten global ‘mega’ challenges that are currently impacting the planet in particular climate change, water, energy, and material resource scarcity. Increase in urbanization rate will continue to increase its need for natural resources, building materials, power and electricity, water, etc. that leads to bio-capacity deficit with a sharp increase in generation of ecological footprints. Power-generating plants running on fossil fuels have been identified as the main source of greenhouse gases (GHG). Approximately, 80% of the world primary energy consumption is still dependent on fossil fuels; thus, the substitution by renewable energy sources, in conjunction with other clean energy sources, appears to be the best and necessary alternative. There are many other sources of renewable energy such as solar, wind, and geothermal, but biomass have been receiving a lot of attention lately. Biomass has gained increased attention in the past decade because it does not only provide an effective option for the provision of energy services from a technical point of view, but also based on resources that can be utilized on a sustainable basis all around the globe. Another benefit of biomass utilization is that this resource can be converted to C3-C4 hydrocarbons and/or synthetic gas (H2 and CO).
Statistics shows that the urban areas with industrial, residential and commercial activities are the large energy “deficit zonesâ€. Thus, the transfer of biomass energy sources from the “surplus zonesâ€, which are those surrounding rural / plantation areas to the major urban cities, can be a solution that bring numerous benefits to the regions: (i) Environmental – minimization of CO2 emissions and other gases of the greenhouse effect (ii) Energy - improvement in the regional energy balance, reinforcement of energy independence, and (iii) Economical – maximization of the utilization of local energy sources and adding the value to the “wasteâ€.
There is a great potential for exploitation of local energy sources from wastes but the strength of policy support and stimulation measures are far from sufficient. At this moment, there is lack of studies about the integration of different types of wastes and the application of green technology approach, in addition to proper supply chain analysis and synthesis for waste-to-energy (WTE) system. These missing studies are crucial for solving both energy and environmental problems especially in the urban area. Further innovative and cost effective process needs to be developed to ensure the competitiveness of green industry. Producing biodiesel from non-edible feedstock is one of the solutions to reduce the import volume. Furthermore, public awareness and acceptance on the utilization of green fuels needs to be promoted and increased. Knowledge dissemination on the advantages of the biofuel utilization in the transportation sectors could be achieved through outreach initiatives to young minds and public.
Increasing demand of transportation fuel has made utilizing biofuels more attractive since it helps to reduce CO2 to 78.45% compared to if purely fossil fuel based is utilized. The sector which emits the most CO2 is the transportation sector. Energy for transportation is projected to be the fastest growing sector during the next five years, expanding at an annual rate of 5.3%. Non-edible resources as fuel are thus important to avoid food vs fuel crisis and reduce dependency on fossil fuel. Furthermore, world population is projected to grow from 6.5 billion in 2005 to nearly 9.2 billion by 2050. To feed a population of more than 9 billion, global food production must be doubled by 2050. Additionally, reliance on a single source of feedstock for biodiesel production has its setback. Thus, diversification of the feedstock towards non-edible materials with a minimal retrofit to existing production facilities will help to overcome the situation. Sustainable development of the energy sector is one of the key factors to maintain economic competitiveness and progress.
The initiative of the Green Technology promotes minimization growth of energy consumptions while enhancing economic development. In addition, it will increase national capability, capacity and awareness for innovation in Green Technology. Overall, the policies and incentives on renewable energy are important to promote low carbon economy and society in future.Â
Citation:Â Yusup, S. (2016). Green Technology and Sustainable Development of Renewable Energy. Trends in Renewable Energy, 2(3), 83-84. DOI: 10.17737/tre.2016.2.3.0024
More information about the Future Energy Service and Publishing
2016-12-01 00:00:00
Editorial
application/pdf
http://futureenergysp.com/index.php/tre/article/view/24
Trends in Renewable Energy; Vol 2 (2016): Special Issue on Smart Grid (1)
eng
Copyright (c) 2016 Suzana Yusup
oai:ojs.futureenergysp.com:article/69
2018-05-13T02:53:03Z
tre:RIEECS2017
driver
nmb a2200000Iu 4500
"180511 2018 eng "
2376-2144
2376-2136
dc
Design and Implementation of Analog Controller Based Single Phase Full Bridge Inverter for Photovoltaic Applications
Ranjan, Abhishek
MALAVIYA NATIONAL INSTITUTE OF TECHNOLOGY JAIPUR
Jalutharia, Sunil
MALAVIYA NATIONAL INSTITUTE OF TECHNOLOGY JAIPUR
GARG, HARSH
MALAVIYA NATIONAL INSTITUTE OF TECHNOLOGY JAIPUR
Gupta, Nitin
Analog Controller; H-Bridge Inverter; Sinusoidal Pulse Width Modulation (SPWM); Metal-Oxide-Semiconductor Field Effect Transistor (MOSFET); Gate Driver
This paper presents a low-cost design of the analog controller for the photovoltaic driven single-phase inverter to generate desired output voltage. The hardware set-up mainly consists of an inverter and an analog controller. The developed controller controls the output voltage of the inverter using SPWM (Sinusoidal Pulse Width Modulation) technique. The inverter, which is designed using Metal-Oxide-Semiconductor Field Effect Transistor (MOSFET) as a switch, generates high-quality output with reduced ripple content and less filtering requirement, making the whole setup cost-effective and efficient. A gate driver circuit is also employed to provide isolation between the inverter and the analog controller. The closed loop analog controller for the photovoltaic driven inverter is implemented and tested for various loads. In all these cases, the output voltage waveforms are of high quality with a lesser number of lower order harmonics. In this way, the paper presents a low-cost design of the inverter that can be used for low-power domestic applications.
Citation:Â Ranjan, A., Jalutharia, S., GARG, H., and Gupta, N. (2018). Design and Implementation of Analog Controller Based Single Phase Full Bridge Inverter for Photovoltaic Applications. Trends in Renewable Energy, 4, 102-113. DOI: 10.17737/tre.2018.4.3.0069
More information about the Future Energy Service and Publishing
2018-04-22 00:00:00
application/pdf
http://futureenergysp.com/index.php/tre/article/view/69
Trends in Renewable Energy; Vol 4 (2018): Special Issue on International Conference on Recent Innovations in Electrical, Electronics and Communication Systems (RIEECS 2017)
eng
Copyright (c) 2018 Abhishek Ranjan, Sunil Jalutharia, Harsh Garg and Nitin Gupta
oai:ojs.futureenergysp.com:article/119
2020-05-25T02:45:29Z
tre:ART
driver
nmb a2200000Iu 4500
"200513 2020 eng "
2376-2144
2376-2136
dc
Business Analytics and IT in Smart Grid – Part 3: New Application Aspect and the Quantitative Mitigation Analysis of Piecewise Monotonic Data Approximations on the iSHM Class Map Footprints of Overhead Low-Voltage Broadband over Power Lines Topologies Contaminated by Measurement Differences
Lazaropoulos, Athanasios G.
1: School of Electrical and Computer Engineering / National Technical University of Athens / 9 Iroon Polytechniou Street / Zografou, GR 15780
2: Department of Inductrial Design and Production Engineering / School of Engineering / University of West Attica / 250 Thivon & P. Ralli / Athens, GR 12244 http://orcid.org/0000-0002-1940-6989
Smart Grid; Broadband over Power Lines (BPL) networks; Power Line Communications (PLC); Distribution and Transmission Power Grids; Capacity; Statistics; Business Analytics; IT; Modeling
Î’ig data that overwhelm smart grid (SG) are susceptible to errors that can further affect business analytics and related human decisions. In [1], the impact of measurement differences that follow various distributions has been examined via initial Statistical Hybrid Model (iSHM) footprints while the mitigation impact of piecewise monotonic data approximations has been qualitatively assessed via corresponding iSHM footprints in [2]. In this companion paper, the potential of applying piecewise monotonic data approximations in the intrinsic procedure of iSHM rather than its inputs and the quantitative mitigation analysis of piecewise monotonic data approximations against measurement differences via iSHM footprints are proposed for the overhead low-voltage broadband over power lines (OV LV BPL) topologies.
Citation: Lazaropoulos, A. G. (2020). Business Analytics and IT in Smart Grid – Part 3: New Application Aspect and the Quantitative Mitigation Analysis of Piecewise Monotonic Data Approximations on the iSHM Class Map Footprints of Overhead Low-Voltage Broadband over Power Lines Topologies Contaminated by Measurement Differences. Trends in Renewable Energy, 6, 214-233. DOI: 10.17737/tre.2020.6.2.00119
More information about the Future Energy Service and Publishing
2020-04-07 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/119
Trends in Renewable Energy; Vol 6, No 2 (2020)
eng
Copyright (c) 2020 Athanasios G. Lazaropoulos
oai:ojs.futureenergysp.com:article/163
2024-03-09T01:48:30Z
tre:ART
driver
nmb a2200000Iu 4500
"231108 2023 eng "
2376-2144
2376-2136
dc
Exploring Cutting-Edge Approaches to Reduce Africa's Carbon Footprint through Innovative Technology Dissemination
Nwokolo, Samuel Chukwujindu
University of Calabar, Calabar, Nigeria
Eyime, Eyime Echeng
Obiwulu, Anthony Umunnakwe
University of Lagos, Lagos, Nigeria
Ogbulezie, Julie C.
University of Calabar, Nigeria
Renewable energy; Climate-smart potential; Technological diffusion; Sustainable renewable energy growth; Greenhouse gas (GHG) emissions; Revitalizing Africa
This paper investigates the possibility of revolutionizing Africa's carbon footprint through innovative technology dissemination strategies for GHG emission reduction. It highlights the importance of harnessing renewable energy sources to mitigate climate change and promote sustainable development in Africa. This paper also examined several technology diffusion theories in order to unleash Africa's climate-smart potential by tying them to the recommended techniques for dealing with technological diffusion concerns. These theories varied from diffusion of innovation theory to planned behaviour theory. By analysing these theories, it was found that the most appropriate technology diffusion theory for the assessment of innovative technology dissemination strategies for GHG emission reduction in Africa would be the Diffusion of Innovations Theory. This is due to the theory's emphasis on the dissemination and adoption of new ideas, technologies, or innovations by people or groups within a social system. It would give useful insights into the variables influencing the adoption and dissemination of novel technology for reducing GHG emissions in Africa. The paper also discusses the challenges and barriers faced in the diffusion of renewable energy technologies across the continent while proposing innovative strategies to overcome these obstacles and unlock Africa's untapped climate-smart potential. These strategies include promoting policy and regulatory frameworks that incentivize investment in renewable energy, fostering partnerships between governments, private sector entities, and international organizations to support technology transfer and capacity building, and implementing financial mechanisms such as green bonds and carbon pricing to mobilize funding for renewable energy projects. These proposed strategies were also used to develop seven policies required for innovative technology dissemination strategies for GHG emission reduction in Africa. These policies aim to address the unique challenges faced by African countries in adopting and implementing innovative technologies for GHG emission reduction. By focusing on capacity building, financial incentives, and knowledge sharing, these strategies seek to promote the widespread adoption of sustainable technologies across the continent. They emphasize the importance of collaboration between governments, private sector entities, and international organizations to ensure the successful implementation and long-term sustainability of these policies.
Citation: Nwokolo, S. C., Eyime, E. E., Obiwulu, A. U., & Ogbulezie, J. C. (2023). Exploring Cutting-Edge Approaches to Reduce Africa's Carbon Footprint through Innovative Technology Dissemination. Trends in Renewable Energy, 10, 1-29. doi:10.17737/tre.2024.10.1.00163
More information about the Future Energy Service and Publishing
2023-03-03 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/163
Trends in Renewable Energy; Vol 10, No 1 (2024)
eng
Copyright (c) 2024 Samuel Chukwujindu Nwokolo, Eyime Echeng Eyime, Anthony Umunnakwe Obiwulu, Julie C. Ogbulezie
oai:ojs.futureenergysp.com:article/1
2017-01-09T04:57:03Z
tre:ED
driver
nmb a2200000Iu 4500
"150101 2015 eng "
2376-2144
2376-2136
dc
A Journal Run by Scientists
Zhang, Bo
Wuhan Institute of Technology; North Carolina A&T State University
Scientific Journal; Trends in Renewable Energy; Tr Ren Energy; Open Access
    While looking for a reputable publisher to propose my own journal, Mr. Beall's blog (http://scholarlyoa.com) astonished me. An accumulated list of over 740 Predatory Publishers (Beall 2012a, Beall 2012b) contains many names, which often show up in my email box.
      Is there any uncorrupted publishers? Yes, there are decent open-access publishers. Blue chip companies hosting hundreds of journals which charge $2000-5000 per accepted manuscript. Few small publishers charge a reasonable amount of money, but only can host less than ten journals due to limited sources.
      Can scientists operate our own journal? We surely can. We are trained to be able to learn anything. This kind of successful stories is rare, but always inspiring us. By launching this journal, I want to show our scientific attitudes.
Our Scientific Attitudes
      A scientific journal should be run by scholars, scientists, researchers, and engineers. Since we are not businessmen, we mind scientific values.
      Making a good journal is the most important thing. I have seen that a SCI journal decreased its impact factor from 1.5 to 0.3 within 5 years, and understood how hard to maintain a reputable publication. The goal of this journal is to pass EI Compendex review within 5 years, and be included in SCI index within 7 years.
      In order to make a good journal and achieve these goals, it needs the collaborative effort among our editorial board members, authors, reviewers, and all contributors.
      We show respect for scholars. The first two volumes of the journal are free of any charge to authors. The length of this Article Processing Charge (APC) waive period may be extended, if the editorial board thought it's necessary.
      We show respect to our editors, editorial board members, and reviewers. After the APC waive period, we will waive APC for manuscripts submitted by our editorial team, and provide 50% discount to reviewers.Â
Â
Citation:Â Zhang, B. (2015). "A Journal Run by Scientists." Trends in Renewable Energy, 1(1), 1-2. DOI: 10.17737/tre.2015.1.1.001
More information about the Future Energy Service and Publishing
2015-03-15 00:00:00
Editorial
application/pdf
http://futureenergysp.com/index.php/tre/article/view/1
Trends in Renewable Energy; Vol 1, No 1 (2015)
eng
Copyright (c) 2015 Bo Zhang
oai:ojs.futureenergysp.com:article/36
2017-10-07T03:17:55Z
tre:ART
driver
nmb a2200000Iu 4500
"170927 2017 eng "
2376-2144
2376-2136
dc
Main Line Fault Localization Methodology in Smart Grid – Part 1: Extended TM2 Method for the Overhead Medium-Voltage Broadband over Power Lines Networks Case
Lazaropoulos, Athanasios G.
National Technical University of Athens / School of Electrical and Computer Engineering http://orcid.org/0000-0002-1940-6989
Smart Grid; Intelligent Energy Systems; Broadband over Power Lines (BPL) Networks; Power Line Communications (PLC); Faults; Fault Analysis; Fault Localization; Distribution Power Grids
These three papers cover the overall methodology for the identification and localization of faults that occur in main transmission and distribution lines when broadband over power lines (BPL) networks are deployed across the transmission and distribution power grids, respectively. In fact, this fault case is the only one that cannot be handled by the combined operation of Topology Identification Methodology (TIM) and Instability Identification Methodology (FIIM). After the phase of identification of main distribution line faults, which is presented in this paper, the main line fault localization methodology (MLFLM) is applied in order to localize the faults in overhead medium-voltage BPL (OV MV BPL) networks.
The main contribution of this paper, which is focused on the identification of the main distribution line faults, is the presentation of TM2 method extension through the adoption of coupling reflection coefficients. Extended TM2 method is analyzed in order to identify a main distribution line fault regardless of its nature (i.e., short- or open-circuit termination). The behavior of the extended TM2 method is assessed in terms of the main line fault nature and, then, its results are compared against the respective ones during the normal operation, which are given by the original TM2 method, when different main distribution line fault scenarios occur. Extended TM2 method acts as the introductory phase (fault identification) of MLFLM.
More information about the Future Energy Service and Publishing
2017-09-27 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/36
Trends in Renewable Energy; Vol 3 (2017): SPECIAL ISSUE ON SMART GRID (2)
eng
Copyright (c) 2017 Athanasios G. Lazaropoulos
oai:ojs.futureenergysp.com:article/93
2019-07-14T17:13:48Z
tre:ART
driver
nmb a2200000Iu 4500
"190402 2019 eng "
2376-2144
2376-2136
dc
The Role of Information Technology Department against the Hook Style Energy Theft in Smart Cities – Ad-Hoc Overhead Low-Voltage Broadband over Power Lines (OV LV BPL) Networks
Lazaropoulos, Athanasios G.
National Technical University of Athens / School of Electrical and Computer Engineering http://orcid.org/0000-0002-1940-6989
Smart Grid; Broadband over Power Lines (BPL); Power Line Communications (PLC); Distribution Power Grid; Energy Theft; Jamming; Robustness
This paper investigates the possibility of detecting the hook style energy theft in the overhead low-voltage (OV LV) power grids through the hook style energy theft method (HS-DET method) when ad-hoc overhead Low-Voltage Broadband over Power Lines (OV LV BPL) networks are deployed by the Information Technology departments of the power utilities. Without the need for the deployment of a complete and permanent OV LV BPL network across the OV LV power grid, the impact of the deviation from the initial measurement positions and of longer ad-hoc OV LV BPL topologies on the detection efficiency of HS-DET method is assessed by using the already validated percent error sum (PES) metrics and appropriate contour plots.
Citation: Lazaropoulos, A. G. (2019). The Role of Information Technology Department against the Hook Style Energy Theft in Smart Cities – Ad-Hoc Overhead Low-Voltage Broadband over Power Lines (OV LV BPL) Networks. Trends in Renewable Energy, 5, 117-150. DOI: 10.17737/tre.2019.5.2.0093
More information about the Future Energy Service and Publishing
2019-04-01 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/93
Trends in Renewable Energy; Vol 5, No 2 (2019)
eng
Copyright (c) 2019 Athanasios G. Lazaropoulos
oai:ojs.futureenergysp.com:article/136
2022-03-23T02:45:43Z
tre:REV
driver
nmb a2200000Iu 4500
"220225 2022 eng "
2376-2144
2376-2136
dc
Introduction of Abnormal Combustion in Hydrogen Internal Combustion Engines and the Detection Method
Liu, Jiahui
North China University of Water Conservancy and Hydropower, Zhengzhou City, Henan
Hydrogen internal combustion engine; Abnormal combustion; Detection method; Clean energy
As a clean, environmentally friendly and renewable energy source, hydrogen as an alternative engine fuel can greatly reduce atmospheric pollution and alleviate the shortage of oil resources, and is the most promising alternative fuel for vehicles among new fuels. However, due to its fast combustion rate and wide ignition limit, hydrogen often shows abnormal combustion phenomena (such as pre-ignition, backfire and knock), when it is used in the engine, thus affecting the performance and normal use of engines. In this paper, the advantages and disadvantages of hydrogen as an alternative fuel for the engine are summarized according to the characteristics of hydrogen. On this basis, the mechanism, influence factors and harm of abnormal combustion in the hydrogen internal combustion engine are analyzed and summarized, which provides a theoretical basis for solving abnormal combustion problems. Finally, several commonly used abnormal combustion detection methods are summarized.
Citation: Liu, J. (2022). Introduction of Abnormal Combustion in Hydrogen Internal Combustion Engines and the Detection Method. Trends in Renewable Energy, 8, 38-48. DOI: 10.17737/tre.2022.8.1.00136
More information about the Future Energy Service and Publishing
2022-03-22 00:00:00
Peer-reviewed article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/136
Trends in Renewable Energy; Vol 8, No 1 (2022)
eng
Copyright (c) 2022 Jiahui Liu
oai:ojs.futureenergysp.com:article/19
2016-05-02T00:53:49Z
tre:ED
driver
nmb a2200000Iu 4500
"160101 2016 eng "
2376-2144
2376-2136
dc
Welcome to the Second Volume of Trends in Renewable Energy
Zhang, Bo
Ph.D., P.E., Prof. of Chemical Engineering, Editor, Trends in Renewable Energy http://scholar.google.com/citations?user=JqmEEfkAAAAJ&hl=en
Trends in Renewable Energy 2015; the 2015 TRE Author of the Year Award; Low petroleum price; clean energy; energy efficacy; energy conservation; renewable energy technologies; Trends in Renewable Energy 2016
With the help of all authors and enthusiastic editorial team members, the Trends in Renewable Energy (TRE) completed the publication of first volume. We deeply appreciate your support, and are looking forward to continuously working with all colleagues around the world.
We also would like to thank you for all nominations for the 2015 TRE Author of the Year Award. The award of this year goes to Dr. Athanasios G. Lazaropoulos at the National Technical University of Athens, Greece. Dr. Lazaropoulos gave our journal tremendous supports during 2015, and his papers often show high quality. Next nomination period will be this December, and categories will include the Author of the Year, the Paper of the Year, and the Editor of the Year.
Low petroleum price did impact the interest of renewable energy technologies last year. But considering advantages of these novel energy technologies along with the benefits of environmental and economic factors, we believe that renewable energy is still one of fastest developing areas. In 2015, governments showed their visions on the development of renewable energy technologies. US Department of Energy granted numerous projects related to clean energy, energy efficacy, energy conservation, and renewable energy technologies. In December 2015, USDA-EPA-DOE released the Biogas Opportunities Roadmap Progress Report, in which challenges and opportunities for the robust biogas industry are outlined. We are expecting that this growing trend of renewable energy will be extended through 2016 and 2017.
We will continue the TRE’s mission to publish quality reviews, original research, and application-oriented papers, providing a communication platform that is run exclusively by scientists working in the renewable energy field. Papers are invited on any individual topic related to renewable energy or those that are interdisciplinary. The article processing charge (APC), i.e. the publication fee, is fully waived for papers published during 2016.
More information about the Future Energy Service and Publishing
2016-03-31 00:00:00
Editorial
application/pdf
http://futureenergysp.com/index.php/tre/article/view/19
Trends in Renewable Energy; Vol 2, No 1 (2016)
eng
Copyright (c) 2016 Bo Zhang
oai:ojs.futureenergysp.com:article/49
2018-05-13T02:53:03Z
tre:RIEECS2017
driver
nmb a2200000Iu 4500
"180426 2018 eng "
2376-2144
2376-2136
dc
Design of Solar System by Implementing ALO Optimized PID Based MPPT Controller
SAHU, Raj Kumar
National Institute of Technology, Raipur
Shaw, Binod
National Institute of Technology, Raipur
Photovoltaic system (PV); Maximum Power Point Tracking (MPPT); Perturb and Observe (P & O); Proportional-Integral-Derivative (PID) controller; Ant lion Optimizer (ALO) algorithm
This paper is a strive approach to design offgrid solar system in association with DC-DC boost converter and MPPT. The tuned PID based MPPT technique is adopted to extract maximum power from the solar system under certain circumstances (temperature and irradiance). The design parameters of PID controller play an imperative aspect to enhance the performance of the system. Ant lion Optimizer (ALO) algorithm is adopted to optimize PID parameters to contribute relevant duty cycle for DC-DC boost converter to maximize output power and voltage. P and O based MPPT technique is implemented to validate the supremacy of PID based MPPT to enhance the response of the system. In this paper, the proposed ALO optimized PID controller based MPPT technique is performed better over conventional P & O technique by conceding the oscillation, time response, settling time and maximum values of voltage, current and power of the solar system.
Citation:Â SAHU, R. K., and Shaw, B. (2018). Design of Solar System by Implementing ALO Optimized PID Based MPPT Controller. Trends in Renewable Energy, 4, 44-55. DOI: 10.17737/tre.2018.4.3.0049
More information about the Future Energy Service and Publishing
2018-04-22 00:00:00
application/pdf
http://futureenergysp.com/index.php/tre/article/view/49
Trends in Renewable Energy; Vol 4 (2018): Special Issue on International Conference on Recent Innovations in Electrical, Electronics and Communication Systems (RIEECS 2017)
eng
Copyright (c) 2018 Raj Kumar Sahu and Binod Shaw
oai:ojs.futureenergysp.com:article/112
2020-03-28T04:02:39Z
tre:ART
driver
nmb a2200000Iu 4500
"200312 2020 eng "
2376-2144
2376-2136
dc
Statistical Channel Modeling of Overhead Low Voltage Broadband over Power Lines (OV LV BPL) Networks – Part 1: The Theory of Class Map Footprints of Real OV LV BPL Topologies, Branch Line Faults and Hook-Style Energy Thefts
Lazaropoulos, Athanasios G.
National Technical University of Athens / School of Electrical and Computer Engineering http://orcid.org/0000-0002-1940-6989
Smart Grid; Broadband over Power Lines (BPL) networks; Power Line Communications (PLC); Distribution and Transmission Power Grids; Capacity; Statistics; Modeling
Due to the significant volatility of Broadband over Power Lines (BPL) networks regarding their circuital and topological characteristics, channel statistical modeling recently gains special attention from the BPL communications engineers. Among the recently presented channel attenuation statistical models, initial statistical hybrid model (iSHM) and modified statistical hybrid model (mSHM) have been theoretically defined and applied to overhead medium voltage (OV MV), underground medium voltage (UN MV) and overhead high voltage (OV HV) BPL networks so far. Apart from the iSHM and mSHM definition and application, the theory of the definition procedure of new virtual distribution and transmission BPL topologies, which describes the phases towards defining statistically equivalent BPL topologies and topology subclasses to the real indicative ones, has been demonstrated as well as the class maps, which are 2D capacity contour plots with respect to the channel attenuation statistical distributions (CASDs) parameters of iSHM and mSHM.
In this pair of papers, iSHM, mSHM, the definition procedure of new virtual BPL topologies and the class mapping are first applied to overhead low voltage (OV LV) BPL networks. Based on the class maps and the BPL topology database of Topology Identification Methodology (TIM), the required theory for illustrating the footprint of the real OV LV BPL topologies is first presented on class maps in this paper. On the basis of the class maps and the BPL topology database of Fault and Instability Identification Methodology (FIIM), the required theory for illustrating the footprint of the OV LV BPL topologies with branch line faults is first identified on class maps in this paper. On the basis of the class maps and the BPL topology database of hook style energy theft detection method (HS-DET method), the required theory for illustrating the footprint of the OV LV BPL topologies with a hook style energy theft is first demonstrated on class maps in this paper.
Citation: Lazaropoulos, A. G. (2020). Statistical Channel Modeling of Overhead Low Voltage Broadband over Power Lines (OV LV BPL) Networks – Part 1: The Theory of Class Map Footprints of Real OV LV BPL Topologies, Branch Line Faults and Hook-Style Energy Thefts. Trends in Renewable Energy, 6, 61-87. DOI: 10.17737/tre.2020.6.1.00112
More information about the Future Energy Service and Publishing
2020-01-02 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/112
Trends in Renewable Energy; Vol 6, No 1 (2020)
eng
Copyright (c) 2020 Athanasios G. Lazaropoulos
oai:ojs.futureenergysp.com:article/155
2023-10-26T00:45:09Z
tre:REV
driver
nmb a2200000Iu 4500
"230321 2023 eng "
2376-2144
2376-2136
dc
A Review of Research on Emission Characteristics of Ethanol-Diesel Blends in Diesel Engines
Chen, Meng
School of Mechanical Engineering/Institute of Vehicles and New Energy Technology, North China University of Water Resources and Electric Power
Ethanol; Diesel engine; Emission; Renewable
This paper reviews research on the emission characteristics of blended ethanol and other fuels. With the rapid development of modern industry, the extensive use of fuel engines has led to increasingly prominent contradictions between energy and the environment. In order to respond to sustainable development and reduce engine emissions in various countries, many scientific research institutions have conducted research on mixed fuels. The research of blended fuel mainly focuses on its sustainability, economy and environmental protection. Compared with gasoline engines, diesel engines have a lower fuel consumption rate and are widely used in heavy industry. But its fuel comes from refining crude oil, which is non-renewable and has poor cleanliness. As an emerging renewable fuel, ethanol is a fuel with good development prospects due to its good cleanliness, wide range of sources and renewable. If ethanol can be used as an alternative fuel for traditional internal combustion engines and diesel engines, it can save some traditional fuels and improve the emission problems of internal combustion engines to a certain extent. This paper introduces the research status of ethanol blended fuels, and the emission characteristics of engines (NOx, HC and CO) under different ethanol ratios and different operating conditions. It can be seen that with the increase of ethanol blending ratio, NOx content will increase, while CO and HC emissions will decrease.
Citation: Chen, M. (2023). A Review of Research on Emission Characteristics of Ethanol-Diesel Blends in Diesel Engines. Trends in Renewable Energy, 9(2), 107-119. doi:http://dx.doi.org/10.17737/tre.2023.9.2.00155
More information about the Future Energy Service and Publishing
2023-12-01 00:00:00
Peer-reviewed article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/155
Trends in Renewable Energy; Vol 9, No 2 (2023)
eng
Copyright (c) 2023 Meng Chen
oai:ojs.futureenergysp.com:article/32
2017-02-07T04:01:52Z
tre:ED
driver
nmb a2200000Iu 4500
"170101 2017 eng "
2376-2144
2376-2136
dc
Our Journal is Moving Forward
Zhang, Bo
Ph.D., P.E., Prof. of Chemical Engineering, Editor, Trends in Renewable Energy http://scholar.google.com/citations?user=JqmEEfkAAAAJ&hl=en
Author of the Year Award; Paper of the Year; Science Citation Index; Ei Compendex; Free-of-Charge publication policy
Happy New Year to all enthusiastic authors and editorial team members. The Trends in Renewable Energy (TRE) successfully concluded the second volume, and heading to another year. We deeply appreciate your support, and are looking forward to continuously working with all colleagues around the world.
The 2016 TRE Author of the Year Award goes to Dr. Athanasios G. Lazaropoulos at the National Technical University of Athens, Greece. Dr. Lazaropoulos contributed over 10 high quality papers to our journal during last two years. The great support of the authors encourages us to improve.
The 2016 TRE Paper of the Year goes to “A Review of Hydrothermal Carbonization of Carbohydrates for Carbon Spheres Preparation†(DOI: 10.17737/tre.2015.1.1.009). Within a short period of time, this paper received 6 citations including 3 external citations. Both the effort of authors and the power of open-access showed impacts to the renewable energy field.
During last two years, we have been accumulating knowledge of running a scientific journal. Now is the time to move forward. We are pursuing to be indexed in renowned indexes, such as the Directory of Open Access Journals (DOAJ), the Science Citation Index (SCI of Web of Science Core Collection), and Ei Compendex.
To prepare this journal to pass the evaluations conducted by multiple indexes, the journal is now an open accessed, peer-reviewed semi-annual journal with completely Free-of-Charge publication policy (i.e. no cost to authors and readers). We will continue the TRE’s mission to publish quality reviews, original research, and application-oriented papers, providing a communication platform that is run exclusively by scientists working in the renewable energy field. Papers are invited on any individual topic related to renewable energy or those that are interdisciplinary.Â
More information about the Future Energy Service and Publishing
2017-01-01 07:29:05
Editorial
application/pdf
http://futureenergysp.com/index.php/tre/article/view/32
Trends in Renewable Energy; Vol 3, No 1 (2017)
eng
Copyright (c) 2017 Bo Zhang
oai:ojs.futureenergysp.com:article/79
2018-10-05T21:19:46Z
tre:REV
driver
nmb a2200000Iu 4500
"181004 2018 eng "
2376-2144
2376-2136
dc
A Global Review of Empirical Models for Estimating Photosynthetically Active Radiation
Nwokolo, Samuel Chukwujindu
University of Calabar, Calabar, Nigeria
Amadi, Solomom Okechukwu
Department of Physics/Geology/Geophysics, Federal University Ndufu-Alike Ikwo
Photosynthetically active radiation; empirical models; classification; functional forms; world review
A good working knowledge of photosynthetically active radiation (PAR) is of vital requirement for determining the terrestrial photosynthesis, primary productivity calculation, ecosystem-atmosphere carbon dioxide, plant physiology, biomass production, natural illumination in greenhouses, radiation climate, remote sensing of vegetation, and radiation regimes of plant canopy, photosynthesis, productivity models of vegetation, etc. However, routine measurement of PAR is not available in most location of interest across the globe. During the past 77 years in order to estimate PAR on hourly, daily and monthly mean basis, several empirical models have been developed for numerous locations globally. As a result, numerous input parameters have been utilized and different functional forms applied. This study was aim at classifying and reviewing the empirical models employed for estimating PAR across the globe. The empirical models so far utilized were classified into ten main categories and presented base on the input parameters applied. The models were further reclassified into numerous main sub-classes (groups) and finally presented according to their developing year. In general, 757 empirical models, 62 functional forms and 32 groups were reported in literature for estimating PAR across the globe. The empirical models utilized were equally compared with models developed using different artificial neural network (ANN); and the result revealed that ANN models are more suitable for estimating PAR across the globe. Thus, this review would provide solar energy researchers with input parameters and functional forms that have been widely used to up to date, and recognizing their importance in estimating PAR globally.Â
Citation:Â Nwokolo, S. C., and Amadi, S. O. (2018). A Global Review of Empirical Models for Estimating Photosynthetically Active Radiation. Trends in Renewable Energy, 4(2), 236-327. DOI: 10.17737/tre.2018.4.2.0079
More information about the Future Energy Service and Publishing
2018-10-05 00:00:00
Peer-reviewed article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/79
Trends in Renewable Energy; Vol 4, No 2 (2018)
eng
Copyright (c) 2018 Samuel Chukwujindu Nwokolo and Solomom Okechukwu Amadi
oai:ojs.futureenergysp.com:article/130
2021-11-04T18:25:38Z
tre:ART
driver
nmb a2200000Iu 4500
"210729 2021 eng "
2376-2144
2376-2136
dc
WITHDRAWN: Exergy and Energy Analysis of a CHP System with a Gas Turbine and a Horizontal Axis Wind Turbine
Norouzi, Nima
Department of energy engineering and physics, Amirkabir university of technology (Tehran polytechnic), 424 Hafez Avenue, PO Box 15875-4413, Tehran, Iran https://orcid.org/0000-0002-2546-4288
This article has been withdrawn at the request of the author. The Publisher apologizes for any inconvenience this may cause.
Citation: Norouzi, N. (2021). WITHDRAWN:Â Exergy and Energy Analysis of a CHP System with a Gas Turbine and a Horizontal Axis Wind Turbine. Trends in Renewable Energy, DOI: 10.17737/tre.2021.7.1.00130.
More information about the Future Energy Service and Publishing
2021-12-31 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/130
Trends in Renewable Energy; Vol 7 (2021)
eng
Copyright (c) 2021 Nima Norouzi
oai:ojs.futureenergysp.com:article/11
2017-01-20T23:04:06Z
tre:ART
driver
nmb a2200000Iu 4500
"150515 2015 eng "
2376-2144
2376-2136
dc
Policies for Carbon Energy Footprint Reduction of Overhead Multiple-Input Multiple-Output High Voltage Broadband over Power Lines Networks
Lazaropoulos, Athanasios G.
School of Electrical and Computer Engineering, National Technical University of Athens http://orcid.org/0000-0002-1940-6989
Broadband over Power Lines (BPL) modeling; modal analysis; Power Line Communications (PLC); overhead High-Voltage (HV) power lines; capacity; green technology
The impact of different environmental policies on the broadband performance of overhead multiple-input multiple-output
high-voltage/broadband over power lines (MIMO/HV/BPL) networks is investigated in this paper. The examined environmental policies focus on the carbon energy footprint reduction of overhead MIMO/HV/BPL networks while respecting their broadband character.
The contribution of this paper is three-fold. First, the spectral and environmental performance of various configurations and topologies of overhead MIMO/HV/BPL networks is assessed with regard to respective spectral efficient (SE) and newly presented environmental efficient (EE) metrics. Second, further insights regarding the performance of overhead MIMO/HV/BPL networks highlight the better spectral and environmental performance of these networks against other today’s overhead HV/BPL networks, such as single-input single-output (SISO), single-input multiple-output (SIMO), or multiple-input single-output (MISO) ones. Third, the definition of appropriate environmental policies that optimize the coexistence of the three main sectors of concern, which are the Quality of Service (QoS) requirements, protection of existing radioservices and promotion of environmentally aware limits, is promoted. Towards that direction, the proposed SE/EE trade-off relation of this paper is expected to prove an extremely helpful SE/EE optimization technique.
Citation:Â Lazaropoulos, A. G. (2015). Policies for Carbon Energy Footprint Reduction of Overhead Multiple-Input Multiple-Output High Voltage Broadband over Power Lines Networks. Trends in Renewable Energy, 1(2), 87-118. DOI: 10.17737/tre.2015.1.2.0011
More information about the Future Energy Service and Publishing
2015-04-10 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/11
Trends in Renewable Energy; Vol 1, No 2 (2015)
eng
http://futureenergysp.com/index.php/tre/article/download/11/50
Copyright (c) 2015 Athanasios G. Lazaropoulos
oai:ojs.futureenergysp.com:article/67
2018-05-13T02:53:03Z
tre:RIEECS2017
driver
nmb a2200000Iu 4500
"180422 2018 eng "
2376-2144
2376-2136
dc
Special Issue on International Conference on Recent Innovations in Electrical, Electronics and Communication Systems (RIEECS 2017), Dehradun, India, 2017
Sikander, Dr. Afzal
Assistant Professor,
Department of Instrumentation and Control Engineering,
Dr. B.R. Ambedkar National Institute of Technology Jalandhar,
Jalandhar (Punjab) - 144011
India
Recent years have witnessed a prolific growth in the fields of Electrical, Electronics and Communication Systems (RIEECS) that inspire us to organize an International Conference. In order to aware the researchers working worldwide about the latest development in these research fields; RIEECS 2017 was held on 28–29th October, 2017 at Graphic Era (Deemed to be University), Dehradun, India. Delegates for this conference were
• Prof. (Dr.) Nitish Patel, Department of Electrical and Computer Engineering, University of Auckland, New Zealand.
• Prof. (Dr.) S. N Singh, Vice Chancellor, Madan Mohan Malviya University of Technology Gorakhpur (UP) and IEEE R10 conference and technical seminar coordinator 2015 – 18
• Dr. Asheesh Kumar Singh, Associate Professor, EED, MNNIT Allahabad (UP) and Vice Chairman – IEEE UP Section.
• Mr. V. K Srivastava, General Manager (Technical Services), IOCL – Haldia (WB).
• Dr. Y. V. Hote, Associate Professor, EED, IIT Roorkee (Uttarakhand)
• Dr. Nagendra Prasad Pathak, Associate Professor, Department of Electronics and Communication Engineering, IIT Roorkee (Uttarakhand)
• Prof. (Dr.) Mak Sharma, Professor, Computer Science, Birmingham City University, United Kingdom.
• Prof. (Dr.) R. C Bansal, Professor, Electrical Electronics and Computer Engineering University of Pretoria, South Africa.
In this conference, total 98 research papers were received, among which 48 papers were finally selected for the presentation. The research contributions of various premier institutes, such as, IITs, NITs, BITs Meshra, Graphic Era Hill University, Rajiv Gandhi College of Engineering & Research, Nagpur, NIC New Delhi, Rajasthan Technical University, were presented in this conference. The speakers and authors identified key problems related to the fields of Electrical, Electronics, and Communication Systems. Based on the quality, research work and scope of the journal, out of 48 research papers, 12 research papers were selected by the conference committee. These selected papers were submitted as an extended version to the special issue on RIEECS2017 of Trends in Renewable Energy Journal.
On behalf of the organizing and program committee of the conference, I would like to thank the authority of Trends in Renewable Energy, to provide me an opportunity to work as an editor of this special issue. Also, thanks to all reviewers of the articles for their esteem effort and time to uphold the spirit of the special issue of the Trends in Renewable Energy. Finally, it is also observed that the published papers cover the research fields of electrical, electronics and communication systems and meeting the goals of this conference. I hope that the articles will be useful to the research community to put forward the progress in the respective and the allied research fields.
More information about the Future Energy Service and Publishing
2018-04-22 00:00:00
application/pdf
http://futureenergysp.com/index.php/tre/article/view/67
Trends in Renewable Energy; Vol 4 (2018): Special Issue on International Conference on Recent Innovations in Electrical, Electronics and Communication Systems (RIEECS 2017)
eng
Copyright (c) 2018 Dr. Afzal Sikander
oai:ojs.futureenergysp.com:article/100
2019-12-05T04:28:17Z
tre:ART
driver
nmb a2200000Iu 4500
"190816 2019 eng "
2376-2144
2376-2136
dc
Virtual Indicative Broadband over Power Lines Topologies for Respective Subclasses by Adjusting Channel Attenuation Statistical Distribution Parameters of Statistical Hybrid Models (Class Maps) – Part 2: Numerical Results for the Overhead and Underground Medium-Voltage Power Grids
Lazaropoulos, Athanasios G.
http://orcid.org/0000-0002-1940-6989
Smart Grid; Broadband over Power Lines (BPL) networks; Power Line Communications (PLC); Distribution Power Grids; Capacity; Statistics; Modeling
With reference to the initial statistical hybrid model (iSHM) and modified statistical hybrid model (mSHM), the theory of the definition procedure of new virtual indicative distribution BPL topologies by appropriately adjusting the channel attenuation statistical distributions (CASDs) parameters of iSHM and mSHM has been presented in [1]. In this paper, the results of the definition procedure for the OV and UN MV BPL networks are first presented through the prism of the proposed class maps of iSHM and mSHM.
Citation: Lazaropoulos, A. G. (2019). Virtual Indicative Broadband over Power Lines Topologies for Respective Subclasses by Adjusting Channel Attenuation Statistical Distribution Parameters of Statistical Hybrid Models (Class Maps) – Part 2: Numerical Results for the Overhead and Underground Medium-Voltage Power Grids. Trends in Renewable Energy, 5, 258-281. DOI: 10.17737/tre.2019.5.3.00100
More information about the Future Energy Service and Publishing
2019-07-26 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/100
Trends in Renewable Energy; Vol 5, No 3 (2019)
eng
Copyright (c) 2019 Athanasios G. Lazaropoulos
oai:ojs.futureenergysp.com:article/145
2022-11-08T03:55:17Z
tre:REV
driver
nmb a2200000Iu 4500
"220813 2022 eng "
2376-2144
2376-2136
dc
Application and Research Progress of Heat Pipe in Thermal Management of Lithium-Ion Battery
Ning, Yilin
North China University of Water Resources and Electric Power
Tao, Renyi
North China University of Water Resources and Electric Power
Luo, Jiaqi
North China University of Water Resources and Electric Power
Hu, Qianchao
North China University of Water Resources and Electric Power
Thermal management; Lithium-ion battery; Heat pipe; New energy vehicles
Lithium-ion batteries have the advantages of high energy density, high average output voltage, long service life, and environmental protection, and are widely used in the power system of new energy vehicles. However, during the working process of the battery, the working temperature is too high or too low, which will affect the charging and discharging performance, battery capacity and battery safety. As a result, a battery thermal management system (BTMS) is essential to maintain the proper ambient temperature of the working battery. Thermal management of power batteries is a key technology to ensure maximum battery safety and efficiency. This paper discusses the significance of thermal management technology in the development of new energy vehicles, introduces the main technical means of thermal management of lithium-ion batteries for vehicle, and focuses on the current state of research on the use of various types of heat pipes in lithium-ion batteries. Finally, the use of heat pipes in the thermal control of lithium-ion batteries is promising.
Citation: Ning, Y., Tao, R., Luo, J., and Hu, Q. (2022). Application and Research Progress of Heat Pipe in Thermal Management of Lithium-Ion Battery. Trends in Renewable Energy, 8, 130-144. DOI: 10.17737/tre.2022.8.2.00145
More information about the Future Energy Service and Publishing
2022-12-01 00:00:00
Peer-reviewed article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/145
Trends in Renewable Energy; Vol 8, No 2 (2022)
eng
Copyright (c) 2022 Yilin Ning, Renyi Tao, Jiaqi Luo, Qianchao Hu
oai:ojs.futureenergysp.com:article/26
2017-01-20T19:39:53Z
tre:ART
driver
nmb a2200000Iu 4500
"161003 2016 eng "
2376-2144
2376-2136
dc
Measurement Differences, Faults and Instabilities in Intelligent Energy Systems – Part 1: Identification of Overhead High-Voltage Broadband over Power Lines Network Topologies by Applying Topology Identification Methodology (TIM)
Lazaropoulos, Athanasios G.
School of Electrical and Computer Engineering / National Technical University of Athens /
9 IroonPolytechniou Street / Zografou, GR 15780 http://orcid.org/0000-0002-1940-6989
Smart Grid; Intelligent Energy Systems; Broadband over Power Lines (BPL) networks; Power Line Communications (PLC); Faults; Fault Analysis; Transmission Power Grids
This first paper considers the identification of the structure of overhead high-voltage broadband over power lines (OV HV BPL) network topologies by applying the best L1 Piecewise Monotonic data Approximation (best L1PMA) to measured OV HV BPL transfer functions. Even if measurement differences occur during the determination of an OV HV BPL transfer function, the corresponding OV HV BPL network topology may be revealed through the curve similarity of the best L1PMA result compared with the available records of the proposed OV HV BPL transfer function database.
The contribution of this paper is triple. First, based on the inherent piecewise monotonicity of OV HV BPL transfer functions, best L1PMA is first applied during the determination of theoretical and measured OV HV BPL transfer functions. Second, the creation procedure of the OV HV BPL network topology database is demonstrated as well as the curve similarity performance metric (CSPM). Third, the accuracy of the proposed Topology Identification Methodology (TIM) is examined in comparison with the traditional TIM with respect to the nature of the measurement differences during the determination of OV HV BPL transfer functions.
Citation: Lazaropoulos, A. G. (2016). Measurement Differences, Faults and Instabilities in Intelligent Energy Systems – Part 1: Identification of Overhead High-Voltage Broadband over Power Lines Network Topologies by Applying Topology Identification Methodology (TIM). Trends in Renewable Energy, 2(3), 85-112. DOI: 10.17737/tre.2016.2.3.0026
More information about the Future Energy Service and Publishing
2016-12-01 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/26
Trends in Renewable Energy; Vol 2 (2016): Special Issue on Smart Grid (1)
eng
Copyright (c) 2016 Athanasios G. Lazaropoulos
oai:ojs.futureenergysp.com:article/53
2018-05-16T02:53:35Z
tre:RIEECS2017
driver
ec_fundedresources
nmb a2200000Iu 4500
"180512 2018 eng "
2376-2144
2376-2136
dc
Establishing Contingency Analysis with FACTS Devices Using Power World Simulator
MONISHA, B
SASTRA Deemed University,
Thanjavur.
Balamurugan, K.
Contingency analysis; Flexible AC transmission system (FACTS); Single contingency; Multiple contingency; Line outage distribution factors (LODFs)
Contingency analysis is the protection of power system operation under the loss of one or more of the major power system components. It is widely used to predict the effect of outages of transmission lines and generators. To calculate the number of violation, contingency analysis is the most preferable choice. Power systems use contingency analysis to foretell the result of any component failure. Contingency analysis is an application that uses a simulated model of power system to judge the result and calculate any overload. The proposed method approaches the flexible AC transmission system (FACTS) device to reduce the power flow in heavily loaded line and also increase the system performance. In this work, FACTS devices were implemented in IEEE 6-bus and IEEE 14-bus system and it is simulated by using Power World Simulator Software.
Citation:Â MONISHA, B., and Balamurugan, K. (2018). Establishing Contingency Analysis with FACTS Devices Using Power World Simulator. Trends in Renewable Energy, 4, 114-131. DOI: 10.17737/tre.2018.4.3.0053
More information about the Future Energy Service and Publishing
2018-04-22 00:00:00
application/pdf
http://futureenergysp.com/index.php/tre/article/view/53
Trends in Renewable Energy; Vol 4 (2018): Special Issue on International Conference on Recent Innovations in Electrical, Electronics and Communication Systems (RIEECS 2017)
eng
Copyright (c) 2018 B. Monisha and K. Balamurugan
oai:ojs.futureenergysp.com:article/120
2021-11-04T18:26:30Z
tre:ART
driver
nmb a2200000Iu 4500
"200724 2020 eng "
2376-2144
2376-2136
dc
Process Design of Microalgae Slurry Pump
Li, Jiayi
Qu, Yinhang
Gong, Yu
Yang, Changyan
Yang, Bohan
Liu, Peng
Zhang, Bo
Ding, Yigang
Microalgae Slurry; Slurry Pump; Process Design; Viscosity; Pump Power
Microalgae are a renewable source of dietary supplements, bioactive compounds, and potential energy. Once harvested, the microalgal medium is dewatered to form a slurry for downstream processing. This article outlines a process design for pumping the microalgae slurry. The pump requirements for delivering the Chlorella slurry with 5, 10 or 20 wt% solids at one tonne per hour (1,000 kg/h) and 10 bar were calculated. The 5 wt% microalgae slurry is a Newtonian fluid with a viscosity of 1.95 mPa×s. The 10 wt% and 20 wt% microalgae slurries are non-Newtonian fluids, whose viscosity depends on the shear rate (g). The viscosity of 10 wt% and 20 wt% microalgae slurries is 1.504 (g = 50 s-1)/1.155 (g = 100 s-1) and 1.844 (g = 50 s-1)/1.219 (g = 100 s-1) mPa×s, respectively. The pump power requirements are mainly governed by the delivery pressure. The effect of the pipe length and the number of elbows is negligible. The effective power of the pump is calculated as 0.267-0.275 kW. To fulfill this duty, a ZGB type single-stage single-suction centrifugal slurry pump can be selected, which would provide enough shear rate to reduce the viscosity of the microalgae slurry and give required shaft power.Â
Citation:Â Li, J., Qu, Y., Gong, Y., Yang, C., Yang, B., Liu, P., Zhang, B., and Ding, Y. (2020). Process Design of Microalgae Slurry Pump. Trends in Renewable Energy, 6(3), 234-244. DOI: 10.17737/tre.2020.6.3.00120
More information about the Future Energy Service and Publishing
2020-07-24 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/120
Trends in Renewable Energy; Vol 6, No 3 (2020)
eng
Copyright (c) 2020 Jiayi Li, Yinhang Qu, Yu Gong, Changyan Yang, Bohan Yang, Peng Liu, Bo Zhang, Yigang Ding
oai:ojs.futureenergysp.com:article/164
2024-03-09T01:48:30Z
tre:ART
driver
nmb a2200000Iu 4500
"231119 2023 eng "
2376-2144
2376-2136
dc
Big Data and Neural Networks in Smart Grid - Part 1: The Impact of Measurement Differences on the Performance of Neural Network Identification Methodologies of Overhead Low-Voltage Broadband over Power Lines Networks
Lazaropoulos, Athanasios G.
1: School of Electrical and Computer Engineering / National Technical University of Athens / 9 Iroon Polytechniou Street / Zografou, GR 15780
2: Department of Industrial Design and Production Engineering / School of Engineering / University of West Attica / 250 Thivon & P. Ralli / Athens, GR 12244 http://orcid.org/0000-0002-1940-6989
Leligou, Helen C.
Department of Industrial Design and Production Engineering / School of Engineering / University of West Attica / 250 Thivon & P. Ralli / Athens, GR 12244
Smart Grid; Broadband over Power Lines (BPL) networks; Power Line Communications (PLC); Distribution and Transmission Power Grids; Neural Networks; Big Data; Modeling; Measurements
Until now, the neural network identification methodology for the branch number identification (NNIM-BNI) and the neural network identification methodology for the distribution line and branch line length approximation (NNIM-LLA) have approximated the number of branches and the distribution line and branch line lengths given the theoretical channel attenuation behavior of the examined overhead low-voltage broadband over powerlines (OV LV BPL) topologies [1], [2]. The impact of measurement differences that follow continuous uniform distribution (CUDs) of different intensities on the performance of NNIM-BNI and NNIM-LLA is assessed in this paper. The countermeasure of the application of OV LV BPL topology databases of higher accuracy is here investigated in the case of NNIM-LLA. The strong inherent mitigation efficiency of NNIM-BNI and NNIM-LLA against CUD measurement differences and especially against those of low intensities is the key finding of this paper. The other two findings that are going to be discussed in this paper are: (i) The dependence of the approximation Root-Mean-Square Deviation (RMSD) stability of NNIM-BNI and NNIM-LLA on the applied default operation settings; and (ii) the proposal of more elaborate countermeasure techniques from the literature against CUD measurement differences aiming at improving NNIM-LLA approximations.
Citation: Lazaropoulos, A. G., & Leligou, H. C. (2024). Big Data and Neural Networks in Smart Grid - Part 2: The Impact of Piecewise Monotonic Data Approximation Methods on the Performance of Neural Network Identification Methodology for the Distribution Line and Branch Line Length Approximation of Overhead Low-Voltage Broadband over Powerlines Networks. Trends in Renewable Energy, 10, 30-66. doi: https://doi.org/10.17737/tre.2024.10.1.00164
More information about the Future Energy Service and Publishing
2023-03-03 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/164
Trends in Renewable Energy; Vol 10, No 1 (2024)
eng
Copyright (c) 2024 Athanasios G. Lazaropoulos, Helen C. Leligou
oai:ojs.futureenergysp.com:article/7
2017-01-09T04:56:07Z
tre:ED
driver
nmb a2200000Iu 4500
"150227 2015 eng "
2376-2144
2376-2136
dc
Renewable Energy for a Sustainable Future
Yang, Changyan
Prof., Vice Dean for Research, School of Chemical Engineering & Pharmacy, Wuhan Institute of Technology
Renewable Energy; China; Wuhan Institute of Technology; Open Accessed Journal; Trends in Renewable Energy
Dear colleagues,
    It is with great pleasure that we present to you our new international open accessed journal in the field of renewable energy. Renewable energy is a comprehensive and interdisciplinary area, which covers Chemistry, Biology, Chemical Engineering, Mechanic Engineering, Material Science, Economic, Environmental Science, Agricultural Engineering, etc. And this journal would be a prodigious platform for all scientists and engineers working dedicatedly in this field.
      Though coal remains as the dominate energy source in China, renewable energy has tremendous growth over the last 15 years. Currently, China was the main demand driver, accounting for more than 80% of the global market. By the end of 2013, China, the United States, Brazil, Canada, and Germany remained the top countries for total installed renewable power capacity; the top countries for non-hydro capacity were again China, the United States, and Germany, followed by Spain, Italy, and India (REN21 2014). China’s new renewable power capacity surpassed new fossil fuel and nuclear capacity for the first time. China lead the world in the production and use of wind power, solar photovoltaic cells, and smart grid technologies, generating almost as much hydro-, wind and solar power as all of France and Germany's power plants combined (Mathews and Tan 2014).
      Scientists at the Wuhan Institute of Technology are dedicated to renewable energy researches, including high-value chemicals production from cellulosic biomass, bioseparation technologies, bioprocessing of microalgae, and CO2 capture. We look forward to sharing our progress with all colleagues through this platform.
      Congratulations on the launch of Trends in Renewable Energy and best wishes for the success of the journal.Â
Changyan Yang, Ph.D.
Professor and Vice Dean for Research
School of Chemical Engineering & Pharmacy
Wuhan Institute of Technology
Citation:Â Yang, C. (2015). "Renewable Energy for a Sustainable Future." Trends in Renewable Energy, 1(1), 3. DOI: 10.17737/tre.2015.1.1.007
More information about the Future Energy Service and Publishing
2015-03-15 00:00:00
Editorial
application/pdf
http://futureenergysp.com/index.php/tre/article/view/7
Trends in Renewable Energy; Vol 1, No 1 (2015)
eng
Copyright (c) 2015 Changyan Yang
oai:ojs.futureenergysp.com:article/37
2018-03-29T16:03:41Z
tre:ART
driver
nmb a2200000Iu 4500
"171002 2017 eng "
2376-2144
2376-2136
dc
Main Line Fault Localization Methodology in Smart Grid – Part 2: Extended TM2 Method, Measurement Differences and L1 Piecewise Monotonic Data Approximation for the Overhead Medium-Voltage Broadband over Power Lines Networks Case
Lazaropoulos, Athanasios G.
National Technical University of Athens / School of Electrical and Computer Engineering http://orcid.org/0000-0002-1940-6989
Smart Grid; Intelligent Energy Systems; Broadband over Power Lines (BPL) Networks; Power Line Communications (PLC); Faults; Fault Analysis; Fault Localization; Distribution Power Grids
Enriching the fault identification methodology of the first paper, this second paper investigates the performance of the identification of main distribution line faults when broadband over power lines (BPL) networks are deployed. The main issue that is concerned in this paper is the impact of measurement differences on the fault identification process performance.
The main contribution of this paper, which is focused on the identification of the main distribution line faults when measurement differences occur, is the application of the L1 piecewise monotonic data approximation (l1PMA) in order to cope with the measurement differences that influence the reflection coefficients derived from the extended TM2 method. Through the L1PMA application, measurement differences are confronted in order to prevent the trigger of a false alarm about the existence of a main distribution line fault. The combined operation of the extended TM2 method and L1PMA concludes the introductory phase (fault identification) of the main line fault localization methodology (MLFLM).
More information about the Future Energy Service and Publishing
2017-09-27 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/37
Trends in Renewable Energy; Vol 3 (2017): SPECIAL ISSUE ON SMART GRID (2)
eng
Copyright (c) 2017 Athanasios G. Lazaropoulos
oai:ojs.futureenergysp.com:article/95
2019-07-14T17:13:48Z
tre:ART
driver
nmb a2200000Iu 4500
"190408 2019 eng "
2376-2144
2376-2136
dc
Production of Biochar Based Porous Carbon Nanofibers for High-Performance Supercapacitor Applications
Xiu, Shuangning
North Carolina A&T State University
Gbewonyob, Spero
Shahbazi, Abolghasem
Zhang, Lifeng
Biochar; Pyrolysis; Supercapacitor; Nanofiber; Activated carbon
Biomass-derived biochar was used as the precursor to synthesize porous carbons for supercapacitor electrodes. The biochar was first activated with KOH to generate porous carbon material and then fabricated into highly flexible porous carbon nanofibers (ECNF) by electrospinning technique. Activated carbons with a surface area of around 2258 m2/g were found. The resultant biochar based ECNF mats exhibited outstanding mechanical flexibility and electrochemical properties as free-stranding and binder free electrodes of supercapacitor. The PAN/BCK3 ECNFs, which were made from the composite of polyacrylonitrile (PAN) and KOH-activated biochar (mass ratio of Biochar/KOH =1:3) exhibited the highest gravimetric capacitance (108 F/g at current density of 0.5 A/g) with high retention (96% at 1 A/g) due to its well-developed micro-mesoporosity. The results indicated that biomass-derived biochar is a promising material which can be used for the production of low cost high performance electrode materials for supercapacitor.Â
Citation:Â Xiu, S., Gbewonyob, S., Shahbazi, A., and Zhang, L. (2019). Production of Biochar Based Porous Carbon Nanofibers for High-Performance Supercapacitor Applications. Trends in Renewable Energy, 5, 151-164. DOI: 10.17737/tre.2019.5.2.0095
More information about the Future Energy Service and Publishing
2019-04-01 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/95
Trends in Renewable Energy; Vol 5, No 2 (2019)
eng
Copyright (c) 2019 Shuangning Xiu, Spero Gbewonyob, Abolghasem Shahbazi1, Lifeng Zhang
oai:ojs.futureenergysp.com:article/139
2022-03-23T02:45:43Z
tre:REV
driver
nmb a2200000Iu 4500
"220313 2022 eng "
2376-2144
2376-2136
dc
Energy Conversion and Conservation Technology in Facing Net Zero-Emission Conditions and Supporting National Defense
Idris, Abdi Manab
Indonesia Defense University http://orcid.org/0000-0003-2152-4121
Sasongko, Nugroho Adi
1:Indonesia Defense University, IPSC Area. Bogor. Indonesia
2: Center of Energy Technology and Chemical Industry, The national innovation research agency (BRIN), Indonesia https://www.researchgate.net/profile/Nugroho-Sasongko
Kuntjoro, Yanif Dwi
Indonesia Defense University, IPSC Area. Bogor. Indonesia https://scholar.google.co.id/citations?user=kF6b44sAAAAJ&hl=en
Energy Conservation; Conversion Technology; Net Zero Emission; Supporting National Defense; Fuel Cells Technology
Conversion technology is a solution that was born to solve energy problems and human needs. Without energy, all human activities ranging from households and jobs to the industry cannot work as they should, but energy conversion that uses conventional fuels will cause new issues such as climate changes. Therefore, energy conservation is very important for sustainability and energy saving. So, by reducing energy use, the pollution produced will decrease. This paper focuses on the introduction of energy conversion and conservation technology based on a qualitative literature review to deal with net-zero emission conditions. The conversion technology is environmentally friendly and efficient, and is committed to following the international Net Zero Emissions (NZE) agreement, renewable energy conversion technology and new technologies (fuel cells) to meet Indonesia's defense equipment and defense needs. Indonesia's energy use (2019) consists of oil 35%, coal 37.3%, gas 18.5%, hydropower 2.5%, geothermal 1.7%, biofuel 3%, and other renewables at nearly 2%. In 2013 Indonesia's recoverable shale resources obtained a value of 8 Billion Barrels. Because of that the total CO2 emissions resulting from energy use in Indonesia are 581 MtCO2 in 2019. Efforts to fulfil Indonesia's Nationally Determined Contribution (NDC) continue to be carried out, so that Indonesia's target is to enter a state of net-zero emission by 2060. Fuel cell technology has the potential to be applied in the Indonesian National Army, because of its relatively small size, light weight, zero-emission, high specific energy and zero-noise.
Citation: Idris, A. M., Sasongko, N. A., and Kuntjoro, Y. D. (2022). Energy Conversion and Conservation Technology in Facing Net Zero-Emission Conditions and Supporting National Defense. Trends in Renewable Energy, 8(1), 49-66. DOI: 10.17737/tre.2022.8.1.00139
More information about the Future Energy Service and Publishing
2022-03-22 00:00:00
Peer-reviewed article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/139
Trends in Renewable Energy; Vol 8, No 1 (2022)
eng
Copyright (c) 2022 Abdi Manab Idris, Nugroho Adi Sasongko, Yanif Dwi Kuntjoro
oai:ojs.futureenergysp.com:article/17
2017-01-20T20:31:04Z
tre:REV
driver
nmb a2200000Iu 4500
"160129 2016 eng "
2376-2144
2376-2136
dc
Designing the Undersea Internet of Things (IoT) and Machine-to-Machine (M2M) Communications Using UnderWater Acoustic MIMO Networks
Lazaropoulos, Athanasios G.
School of Electrical and Computer Engineering, National Technical University of Athens (NTUA) http://orcid.org/0000-0002-1940-6989
Internet of Things (IoT); Machine-to-Machine (M2M); UnderWater Acoustic (UWA) channel modeling; statistical performance metrics; spectral-efficient (SE) metrics; energy-efficient (EE) metrics; multi-input multi-output (MIMO) networks
This review paper tries to assess the spectral-efficient (SE) and energy-efficient (EE) performance of underwater acoustic multiple-input multiple-output (UWA/MIMO) networks. Since UWA/MIMO networks define the cutting-edge communications platform of the future’s undersea IoT and M2M networks, the factors that influence their SE and EE performance are thoroughly examined in this paper.
The contribution of this paper is three-fold. First, the performance of UWA/MIMO networks is studied with regard to appropriate transmission, SE and EE metrics. The SE and EE performance of these networks drastically depends on the used frequency band, the transmitted power, the MIMO scheme properties, the power consumption profile of the deployed UWA system equipment and the topological characteristics of MIMO configurations. In order to achieve the transition from traditional UWA single-input single-output (UWA/SISO) networks to UWA/MIMO networks, a new singular value decomposition MIMO (SVD/MIMO) module, which also permits the theoretical computation of the aforementioned transmission, SE and EE metrics in UWA networks, is first presented. Second, based on the aforementioned transmission, SE and EE metrics, a SE/EE trade-off relation is proposed in order to investigate the combined SE and EE performance of UWA/MIMO networks. On the basis of this SE/EE trade-off relation, it is first revealed that today’s UWA system equipment cannot support the further IoT broadband exploitation with satisfactory EE performance. Third, the concepts of multi-hop UWA communications and standard UWA topologies are outlined and promoted so that further SE and EE improvement can concurrently occur. These concepts are quantitatively validated by the SE and EE metrics as well as the SE/EE trade-off curves.
Based on the findings of this paper, suitable transmitted power levels and better design of UWA/MIMO configurations are promoted so that: (i) SE and EE requirements can be satisfied at will; and (ii) EE-oriented high-bitrate M2M communications network design can be established.
Citation:Â Lazaropoulos, A. G. (2016). "Designing the Undersea Internet of Things (IoT) and Machine-to-Machine (M2M) Communications Using UnderWater Acoustic MIMO Networks." Trends in Renewable Energy, 2(1), 13-50. DOI: 10.17737/tre.2016.2.1.0017
More information about the Future Energy Service and Publishing
2016-03-31 00:00:00
Peer-reviewed article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/17
Trends in Renewable Energy; Vol 2, No 1 (2016)
eng
Copyright (c) 2016 Athanasios G. Lazaropoulos
oai:ojs.futureenergysp.com:article/55
2018-05-13T02:53:03Z
tre:RIEECS2017
driver
nmb a2200000Iu 4500
"180427 2018 eng "
2376-2144
2376-2136
dc
Heat Energy Recovery System
KOHLI, UJJAWAL
GRAPHIC ERA UNIVERSITY, DEHRADUN
Mishra, Vaibhav
Singh Kotwal, Sparsh
Chimneys; Conduction; Exhaust; Heat Recovery; Temperature; Water Jacket
Energy demands in today’s world have increased and the main area of concerns is that approximately 90% of world’s oil reserves are expected to be depleted within two generations. We are trying to build a technological system where the by-product of conventional fuel i.e., exhaust heat of fuel, will be converted into another form so that it can further be used again. Mainly, recovery of heat energy is our prime motive. According to our motive, we are going to recover the heat of the hot exhaust gases from chimneys of factories which usually dissipate into the atmosphere and thus that exhaust heat left unused. So, we are making a water storing tank i.e., water jacket that will surround the chimney through which heat from hot exhaust gases will come in contact with water present in water jacket. Through the process of conduction, heat transfer will take place. Therefore, due to heat, the temperature of the water will increase to a very high extent, and hot water can be used in boilers as a pre-heater for household or commercial purposes. Furthermore, global warming will also be controlled if we start implementing this technology at a huge scale.Â
Citation:Â KOHLI, U., Mishra, V., and Singh Kotwal, S. (2018). Heat Energy Recovery System. Trends in Renewable Energy, 4, 56-63. DOI: 10.17737/tre.2018.4.3.0055
More information about the Future Energy Service and Publishing
2018-04-22 00:00:00
application/pdf
http://futureenergysp.com/index.php/tre/article/view/55
Trends in Renewable Energy; Vol 4 (2018): Special Issue on International Conference on Recent Innovations in Electrical, Electronics and Communication Systems (RIEECS 2017)
eng
Copyright (c) 2018 Ujjawal Kohli, Vaibhav Mishra and Sparsh Singh Kotwal
oai:ojs.futureenergysp.com:article/113
2020-03-28T04:02:39Z
tre:ART
driver
nmb a2200000Iu 4500
"200312 2020 eng "
2376-2144
2376-2136
dc
Statistical Channel Modeling of Overhead Low Voltage Broadband over Power Lines (OV LV BPL) Networks – Part 2: The Numerical Results of Class Map Footprints of Real OV LV BPL Topologies, Branch Line Faults and Hook Style Energy Thefts
Lazaropoulos, Athanasios G.
National Technical University of Athens / School of Electrical and Computer Engineering http://orcid.org/0000-0002-1940-6989
Smart Grid; Broadband over Power Lines (BPL) networks; Power Line Communications (PLC); Distribution and Transmission Power Grids; Capacity; Statistics; Modeling
In [1], the theoretical framework for the interoperability of DHM, iSHM, mSHM, the definition procedure and the class maps has been first presented for OV LV BPL networks. But the main interest of the first paper has focused on the theory of the OV LV BPL topology footprints of TIM, FIIM and HS-DET method on the class maps.
In this paper, the numerical results concerning the application of iSHM, mSHM, the definition procedure and the class maps to OV LV BPL networks are first shown. Then, given the iSHM and mSHM class maps, the footprints of TIM, FIIM and HS-DET method databases for the OV LV BPL topologies are highlighted. Finally, a technique for the detection of branch line faults and hook style energy thefts that is based on iSHM and mSHM footprints is proposed.
Citation: Lazaropoulos, A. G. (2020). Statistical Channel Modeling of Overhead Low Voltage Broadband over Power Lines (OV LV BPL) Networks – Part 2: The Numerical Results of Class Map Footprints of Real OV LV BPL Topologies, Branch Line Faults and Hook Style Energy Thefts. Trends in Renewable Energy, 6, 88-109. DOI: 10.17737/tre.2020.6.1.00113
More information about the Future Energy Service and Publishing
2020-01-02 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/113
Trends in Renewable Energy; Vol 6, No 1 (2020)
eng
Copyright (c) 2020 Athanasios G. Lazaropoulos
oai:ojs.futureenergysp.com:article/156
2023-10-26T00:45:09Z
tre:ART
driver
nmb a2200000Iu 4500
"230321 2023 eng "
2376-2144
2376-2136
dc
Assessing the Impact of Soiling, Tilt Angle, and Solar Radiation on the Performance of Solar PV Systems
Nwokolo, Samuel Chukwujindu
University of Calabar, Calabar, Nigeria
Obiwulu, Anthony Umunnakwe
Amadi, Solomon Okechukwu
Ogbulezie, Julie C
Global tilted irradiance; global horizontal irradiance; soiling; optimum tilt angle; maximum incident solar radiation
This research examined the observed datasets and a theoretically derived model for estimating yearly optimum tilt angle (β), maximum incident solar radiation (Hmax), clean gain indicator (CGI), and soiling loss indicator (SLI) at Mumbwa, Zambia, the Mediterranean Region, and low latitude locations across the globe. The cleaned tilted collector emerged as the best performing collector due to Hmax and much higher energy gains compared with the soiled collector. CGI showed an appreciable performance of 0.4737% over -0.4708% on the SLI, indicating that soiling on the surface of photovoltaic (PV) modules significantly depreciates the overall performance of PV modules. Two established empirical models obtained from the literature were compared with the established theoretical model (β=φ). The result revealed that the two models overestimated the observed annual optimum tilt angle in this paper, simply because the models were developed with high latitude location datasets from the Asia continent. However, the newly established monthly and yearly global radiation indicator (GRI) models by the authors in their previous paper performed excellently in the selected representative cities in the Mediterranean region.
Citation: Nwokolo, S., Obiwulu, A., Amadi, S., & Ogbulezie, J. (2023). Assessing the Impact of Soiling, Tilt Angle, and Solar Radiation on the Performance of Solar PV Systems. Trends in Renewable Energy, 9(2), 120-136. doi:http://dx.doi.org/10.17737/tre.2023.9.2.00156
More information about the Future Energy Service and Publishing
2023-12-01 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/156
Trends in Renewable Energy; Vol 9, No 2 (2023)
eng
Copyright (c) 2023 Samuel Chukwujindu Nwokolo, Anthony Umunnakwe Obiwulu, Solomon Okechukwu Amadi, Julie C. Ogbulezie
oai:ojs.futureenergysp.com:article/33
2017-02-10T19:46:53Z
tre:REV
driver
nmb a2200000Iu 4500
"170207 2017 eng "
2376-2144
2376-2136
dc
Characterization, Modification and Application of Biochar for Energy Storage and Catalysis: A Review
Xiu, Shuangning
North Carolina A&T State University
Shahbazi, Abolghasem
Li, Rui
Biochar; Hydrochar; Catalysis; Supercapacitor; Thermochemical conversion of biomass; Mechanism of biochar formation; Feedstock choice; Characterization; Biochar modification
Biomass can be converted to biofuels and bioproducts via thermochemical processes. Biochar is one of the major products of thermochemical conversion of biomass. The efficient use of biochar is critical to improving the economic viability and environmental sustainability of biomass conversion technologies. Applications of biochar for both agricultural and environmental benefits (e.g. as soil amendment, for inorganic pollutant removal) have been studied and reviewed extensively. However, biochar for energy storage materials and catalytic applications has not been widely reviewed in the recent past. This review aims to present the more significant recent advances in several biochar utilizations such as catalysts and supercapacitors. Discussions on biochar production technologies, chemistry, properties, characteristics, and advanced functionalization techniques are provided. It also points out barriers to achieving improvements in the future.Â
Citation:Â Xiu, S., Shahbazi, A., and Li, R. (2017). Characterization, Modification and Application of Biochar for Energy Storage and Catalysis: A Review. Trends in Renewable Energy, 3(1), 86-101. DOI: 10.17737/tre.2017.3.1.0033
More information about the Future Energy Service and Publishing
2017-01-01 07:29:05
Peer-reviewed article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/33
Trends in Renewable Energy; Vol 3, No 1 (2017)
eng
Copyright (c) 2017 Shuangning Xiu, Abolghasem Shahbazi and Rui Li
oai:ojs.futureenergysp.com:article/80
2019-01-02T01:22:23Z
tre:ART
driver
nmb a2200000Iu 4500
"181015 2018 eng "
2376-2144
2376-2136
dc
Conversion of Food Processing Waste to Bioenergy: Bangladesh Perspective
Amin, Mohammad Shaiful Alam
Shahjalal University of science and Technology
Sylhet-3114.
Talukder, Mubassir Jahan
Raju, Rajashri Roy
Khan, Md Maksudur Rahman
Microbial fuel cell; Food processing waste; Bio-electricity; Wastewater treatment; Chemical oxygen demand
Microbial fuel cell (MFC) is an attractive renewable and sustainable technology to meet up the drastic energy crisis of the world through waste water treatment. This Bioelectrochemical system (BES) converts biomass spontaneously into electricity by the metabolic activity of microorganisms. Food processing industry generally discharges large volume of wastewater, which creates adverse financial and ecological impacts to the industry and environment. In this present contribution, electricity production from food processing industry wastewater that serves as substrates in MFCs was investigated. Dual chambered mediator-less MFC was designed and fabricated using locally available materials. Performance of the MFC was evaluated by measuring potential parameters, such as current generation, current density, change in pH, and change in chemical oxygen demand at different operating conditions. Polarization experiments were conducted to find the maximum power density. Current generation increased with increasing sludge loading, and maximum results were recorded as 90 µA with 9 g of sludge and optimum pH value 8 in the anode chamber. This study documented a maximum power density of 7.42 mW/m2 with the corresponding current density of 25 mA/m2.Â
Citation:Â Amin, M. S. A., Talukder, M. J., Raju, R. R., and Khan, M. M. R. (2019). Conversion of Food Processing Waste to Bioenergy: Bangladesh Perspective. Trends in Renewable Energy, 5(1), 1-11. DOI: 10.17737/tre.2019.5.1.0080
More information about the Future Energy Service and Publishing
2018-01-01 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/80
Trends in Renewable Energy; Vol 5, No 1 (2019)
eng
Copyright (c) 2019 Mohammad Shaiful Alam Amin, Mubassir Jahan Talukder, Rajashri Roy Raju, Md Maksudur Rahman Khan
oai:ojs.futureenergysp.com:article/131
2021-11-04T18:25:38Z
tre:ART
driver
nmb a2200000Iu 4500
"210829 2021 eng "
2376-2144
2376-2136
dc
Exergy and Energy Analysis of Wind-Thermal System
Norouzi, Nima
Department of energy engineering and physics, Amirkabir university of technology (Tehran polytechnic), 424 Hafez Avenue, PO Box 15875-4413, Tehran, Iran, https://orcid.org/0000-0002-2546-4288
ORC cycle; Wind turbine; Energy analysis; Wind Thermal; Exergy analysis
Current wind systems are intermittent and cannot be used as the baseload energy source. The research on the concept of wind power using direct thermal energy conversion and thermal energy storage, called wind powered Thermal Energy System (WTES), opened the door to a new energy system called Wind-thermal, which is a strategy for developing baseload wind power systems. The thermal energy is generated from the rotating energy directly at the top of the tower by the heat generator, which is a simple and light electric brake. The rest of the system is the same as the tower type concentrated solar power (CSP). This paper’s results suggest that the energy and exergy performance of the WTES (62.5% and 29.8%) is comparable to that of conventional wind power, which must be supported by the backup thermal plants and grid enhancement. This cogeneration nature of the WTES system makes this system suitable for using wind power as a direct heat source in several heat-demanding processes such as chemical production. Also, the light heat generator reduces some issues of wind power, such as noise and vibration, which are two main bottlenecks of the wind power technology.
Citation:Â Norouzi, N. (2021). Exergy and Energy Analysis of Wind-Thermal System. Trends in Renewable Energy, 7(1), 73-86. DOI: 10.17737/tre.2021.7.1.00131
More information about the Future Energy Service and Publishing
2021-12-31 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/131
Trends in Renewable Energy; Vol 7 (2021)
eng
Copyright (c) 2021 Nima Norouzi
oai:ojs.futureenergysp.com:article/12
2017-01-20T23:05:01Z
tre:ART
driver
nmb a2200000Iu 4500
"150704 2015 eng "
2376-2144
2376-2136
dc
Synthesis and Characterization of Carbon Nanospheres Obtained by Hydrothermal Carbonization of Wood-derived and Other Saccharides
Yan, Qiangu
Mississippi State University
Li, Rui
North Carolina A&T State University
Toghiani, Hossein
Dave C. Swalm School of Chemical Engineering, Mississippi State University
Cai, Zhiyong
Forest Products Lab, USDA Forest Service
Zhang, Jilei
Department of Sustainable Bioproducts, Mississippi State University
Hydrothermal Carbonization (HTC); Carbon Nanospheres; Carbohydrates; Pine Wood-derived Saccharides; Gas Phase Composition; Mechanism of HTC; xylose; glucose; sucrose
Carbon nanospheres were synthesized by hydrothermal carbonization (HTC) of four different carbon sources: xylose, glucose, sucrose, and pine wood derived saccharides. The obtained carbon nanospheres were characterized for particle morphology and size, and surface functional groups. Morphological and structural differences among these saccharides derived HTC carbons were clearly observed. Scanning electron microscopy images of carbon nanospheres from HTC of xylose showed uniform spherical particles with diameters around 80 nm, while carbon nanospheres obtained from glucose, sucrose, and pine-derived saccharides had particle size  in the range of 100-150 nm, 300-400 nm, and 50-100 nm, respectively. Carbon dioxide and carbon monoxide were primary gaseous phase products during the HTC process. In addition, methane, propane, hydrogen, and benzene were detected in the gas phase.
Citation:Â Yan, Q., Li, R., Toghiani, H., Cai, Z., and Zhang, J. (2015). Synthesis and Characterization of Carbon Nanospheres Obtained by Hydrothermal Carbonization of Wood-derived and Other Saccharides. Trends in Renewable Energy, 1(2), 119-128. DOI: 10.17737/tre.2015.1.2.0012
More information about the Future Energy Service and Publishing
2015-04-10 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/12
Trends in Renewable Energy; Vol 1, No 2 (2015)
eng
Copyright (c) 2015 Qiangu Yan et al.
oai:ojs.futureenergysp.com:article/59
2018-05-03T13:56:10Z
tre:ART
driver
nmb a2200000Iu 4500
"180314 2018 eng "
2376-2144
2376-2136
dc
Broadband Performance Metrics and Regression Approximations of the New Coupling Schemes for Distribution Broadband over Power Lines (BPL) Networks
Lazaropoulos, Athanasios G.
http://orcid.org/0000-0002-1940-6989
Broadband over Power Lines (BPL); Power Line Communications (PLC); distribution power grids; statistical performance metrics; Smart Grid (SG)
This paper assesses the broadband performance of overhead (OV) and underground (UN) low-voltage (LV) and medium-voltage (MV) broadband over power lines (BPL) networks when the new refined Coupling Scheme module (CS2 module) is adopted. The broadband performance of distribution BPL networks is assessed in terms of their Average Channel Gain (ACG), Root-Mean-Square Delay-Spread (RMS-DS), Coherence Bandwidth (CB) and Spectral Efficiency (SE). Also, corresponding regression approximations (i.e., UN1, UN2 and UN3 approaches) are given in the examined BPL frequency range. The aforementioned broadband performance metrics of the application of CS2 module are compared against the relative ones of the vintage CS1 module and of MIMO channels. The analysis and relevant numerical results outline: (i) the important improvement of the aforementioned performance metrics and regression approximations when CS2 module is applied in distribution BPL networks instead of CS1 module; and (ii) the universal role of UN1, UN2 and UN3 approaches for describing coupling scheme channels and MIMO ones.
Citation:Â Lazaropoulos, A. G. (2018). Broadband Performance Metrics and Regression Approximations of the New Coupling Schemes for Distribution Broadband over Power Lines (BPL) Networks. Trends in Renewable Energy, 4, 43-73.
More information about the Future Energy Service and Publishing
2017-11-24 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/59
Trends in Renewable Energy; Vol 4, No 1 (2018)
eng
Copyright (c) 2018 Athanasios G. Lazaropoulos
oai:ojs.futureenergysp.com:article/101
2019-12-05T04:28:17Z
tre:ART
driver
nmb a2200000Iu 4500
"190816 2019 eng "
2376-2144
2376-2136
dc
Virtual Indicative Broadband over Power Lines Topologies for Respective Subclasses by Adjusting Channel Attenuation Statistical Distribution Parameters of Statistical Hybrid Models (Class Maps) – Part 3: The Case of Overhead Transmission Power Grids
Lazaropoulos, Athanasios G.
http://orcid.org/0000-0002-1940-6989
Smart Grid; Broadband over Power Lines (BPL) networks; Power Line Communications (PLC); Distribution Power Grids; Capacity; Statistics; Modeling
In [1], [2], the theoretical framework and the numerical results concerning the class mapping of overhead and underground medium voltage broadband over power lines (OV and UN MV BPL) topologies have been presented on the basis of the recently proposed initial statistical hybrid model (iSHM), modified statistical hybrid model (mSHM) and class map definition procedure. In this paper, all the recent findings regarding the statistical channel modeling and class mapping are first applied to transmission BPL networks; say, OV high voltage (HV) BPL topologies. The numerical results of OV HV BPL networks are compared against the respective ones of OV and UN distribution networks revealing significant similarities and differences. Finally, the impact of considering minimum or maximum capacity value instead of the average one during the definition procedure is investigated as well as the behavior of the total simulation time of class mapping.
Citation: Lazaropoulos, A. G. (2019). Virtual Indicative Broadband over Power Lines Topologies for Respective Subclasses by Adjusting Channel Attenuation Statistical Distribution Parameters of Statistical Hybrid Models (Class Maps) – Part 3: The Case of Overhead Transmission Power Grids. Trends in Renewable Energy, 5, 282-306. DOI: 10.17737/tre.2019.5.3.00101
More information about the Future Energy Service and Publishing
2019-07-26 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/101
Trends in Renewable Energy; Vol 5, No 3 (2019)
eng
Copyright (c) 2019 Athanasios G. Lazaropoulos
oai:ojs.futureenergysp.com:article/148
2023-03-21T02:38:19Z
tre:REV
driver
nmb a2200000Iu 4500
"221107 2022 eng "
2376-2144
2376-2136
dc
Recent Studies on Alternative Fuel of Dimethyl Ether
Zhang, Jixiang
School of Mechanical Engineering/Institute of Vehicles and New Energy Technology, North China
University of Water Resources and Electric Power, Zhengzhou City, Henan
Dimethyl ether; Diesel engine; Alternative fuel; Clean fuel
With the development of industrialization, a large number of non-renewable fuels (such as coal and crude oil) are consumed, and the harmful substances produced in the combustion process of a large number of fossil fuels have caused serious pollution to the atmosphere, and the harmful gases produced by combustion have caused disastrous damage to the ecological balance. Therefore, finding clean energy and exploring alternative fuels are very important in today's society. This paper mainly reviews the studies on the alternative fuels of dimethyl ether (DME). Firstly, the types of alternative fuels currently researched by society and their respective advantages and disadvantages are analyzed, and the preparation of dimethyl ether and its advantages and disadvantages are analyzed in detail. In addition, the physicochemical properties, combustion and emission characteristics of dimethyl ether and diesel are compared and analyzed. The conclusion is that the injection delay angle of dimethyl ether is larger than that of diesel, the ignition delay period is shorter than that of diesel, and the maximum explosion pressure, maximum pressure rise rate and combustion noise of dimethyl ether are lower than that of diesel. The diffusion combustion speed of DME is faster than that of diesel, and the combustion duration is shorter than that of diesel. At the same time, as an alternative energy, dimethyl ether engine has a significant reduction in NOx emission, a very low level of HC and CO emission, and zero soot emission. In conclusion, the DME engine has good performance and emission characteristics.
Citation: Zhang, J. (2022). Recent Studies on Alternative Fuel of Dimethyl Ether. Trends in Renewable Energy, 9(1), 1-10. DOI: 10.17737/tre.2023.9.1.00148
More information about the Future Energy Service and Publishing
2023-03-20 00:00:00
Peer-reviewed article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/148
Trends in Renewable Energy; Vol 9, No 1 (2023)
eng
Copyright (c) 2023 Jixiang Zhang
oai:ojs.futureenergysp.com:article/27
2017-01-20T19:42:00Z
tre:ART
driver
nmb a2200000Iu 4500
"161003 2016 eng "
2376-2144
2376-2136
dc
Measurement Differences, Faults and Instabilities in Intelligent Energy Systems – Part 2: Fault and Instability Prediction in Overhead High-Voltage Broadband over Power Lines Networks by Applying Fault and Instability Identification Methodology (FIIM)
Lazaropoulos, Athanasios G.
School of Electrical and Computer Engineering / National Technical University of Athens /
9 Iroon Polytechniou Street / Zografou, GR 15780 http://orcid.org/0000-0002-1940-6989
Smart Grid; Intelligent Energy Systems; Broadband over Power Lines (BPL) networks; Power Line Communications (PLC); Faults; Fault Analysis; Transmission Power Grids
This companion paper of [1] focuses on the prediction of various faults and instabilities that may occur during the operation of the transmission power grid when overhead high-voltage broadband over power lines (OV HV BPL) networks are deployed across it. Having already been identified the theoretical OV HV BPL transfer function for a given OV HV BPL network [1], the faults and instabilities of the transmission power grid are first differentiated from the measurement differences, which can occur during the determination of an OV HV BPL transfer function, and, then, are identified by applying the best L1 Piecewise Monotonic data Approximation (best L1PMA) to the measured OV HV BPL transfer function. When faults and instabilities are detected, a warning is issued.
The contribution of this paper is triple. First, the Topology Identification Methodology (TIM) of [1] is here extended to the proposed Fault and Instability Identification Methodology (FIIM) so that faults and instabilities across the transmission power grid can be identified. Also, the curve similarity performance percentage metric (CSPpM) that acts as the accompanying performance metric of FIIM is introduced. Second, the impact of various fault and instability conditions on the OV HV BPL transfer functions is demonstrated. Third, the fault and instability prediction procedure by applying the FIIM is first reported.
Citation: Lazaropoulos, A. G. (2016). Measurement Differences, Faults and Instabilities in Intelligent Energy Systems – Part 2: Fault and Instability Prediction in Overhead High-Voltage Broadband over Power Lines Networks by Applying Fault and Instability Identification Methodology (FIIM). Trends in Renewable Energy, 2(3), 113-142. DOI: 10.17737/tre.2016.2.3.0027
More information about the Future Energy Service and Publishing
2016-12-01 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/27
Trends in Renewable Energy; Vol 2 (2016): Special Issue on Smart Grid (1)
eng
Copyright (c) 2016 Athanasios G. Lazaropoulos
oai:ojs.futureenergysp.com:article/70
2018-10-05T21:19:46Z
tre:ART
driver
nmb a2200000Iu 4500
"180603 2018 eng "
2376-2144
2376-2136
dc
Enhancing Frequency of Grid-connected Wind Farm using Energy Capacitor System and Trap RC Shunt Damper Strategies
Okedu, Kenneth E
Wind energy; Wind farm; Frequency; Grid; Wind turbine; Filters; RC damper
In this paper, a combination of the conventional energy capacitor system and a proposed two-trap Resistor Capacitor (RC) shunt damper circuitry is used to stabilize a grid network made up of fixed speed wind turbines, steam turbines and hydro turbines. The energy storage system is connected to the terminals of the wind farm and has the capability of stabilizing the grid network during periods of wind speed change. The two-trap damper has the ability to mitigate the mechanical vibration of the wind turbine and increase its output and rotor speed acceleration during disturbances, so the turbine speed is reduced. Simulations were run using Power System Computer Aided Design and Electromagnetic Transient Including DC (PSCAD/EMTDC) environment, for scenarios where grid frequency control was not implemented and when frequency control was employed using the energy storage device. A further investigation was carried out in enhancing the performance of the grid network considering the proposed two-trap shunt DC damper control topology. The results show the improved performance of the variables of the wind turbine and the entire grid network during dynamics, due to the coordinated control strategies of the two-trap RC circuit and the energy capacitor system employed.Â
Citation: Okedu, K. E. (2018). Enhancing Frequency of Grid-connected Wind Farm using Energy Capacitor System and Trap RC Shunt Damper Strategies. Trends in Renewable Energy, 4, 96-110. DOI: 10.17737/tre.2018.4.2.0070
More information about the Future Energy Service and Publishing
2018-10-05 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/70
Trends in Renewable Energy; Vol 4, No 2 (2018)
eng
http://futureenergysp.com/index.php/tre/article/download/70/329
Copyright (c) 2018 Kenneth E. Okedu
oai:ojs.futureenergysp.com:article/122
2021-11-04T18:26:30Z
tre:ART
driver
nmb a2200000Iu 4500
"200926 2020 eng "
2376-2144
2376-2136
dc
Management Information Systems and Data Science in the Smart Grid – Inner Class Area Capacity Distribution of the iSHM Class Maps of Overhead Low-Voltage Broadband over Power Lines Topologies
Lazaropoulos, Athanasios G.
1: School of Electrical and Computer Engineering / National Technical University of Athens / 9 Iroon Polytechniou Street / Zografou, GR 15780
2: Department of Industrial Design and Production Engineering / School of Engineering / University of West Attica / 250 Thivon & P. Ralli / Athens, GR 12244 http://orcid.org/0000-0002-1940-6989
Smart Grid; Broadband over Power Lines (BPL) networks; Power Line Communications (PLC); Distribution and Transmission Power Grids; Capacity, Statistics; Modeling; Management Information Systems; Data Science
On the basis of the initial Statistical Hybrid Model (iSHM), the iSHM class maps, which are 2D contour plots and may graphically classify the real and virtual OV LV BPL topologies into five class areas, are upgraded in this paper by exploiting the third dimension of the capacity so that the upgraded class maps can provide additional information concerning the inner class area capacity distribution. The comprehension of the behavior of the inner class area capacity distribution is critical in order to deeper understand the extent and the position of iSHM class map footprints when various operation conditions of OV LV BPL topologies occur. Two inner class area capacity distribution rule of thumbs that deal with the OV LV BPL topology classification and capacity estimation are proposed thus supporting the management information system of OV LV BPL networks.
Citation: Lazaropoulos, A. G. (2020). Management Information Systems and Data Science in the Smart Grid – Inner Class Area Capacity Distribution of the iSHM Class Maps of Overhead Low-Voltage Broadband over Power Lines Topologies. Trends in Renewable Energy, 6(3), 245-265. DOI: 10.17737/tre.2020.6.3.00122
More information about the Future Energy Service and Publishing
2020-07-24 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/122
Trends in Renewable Energy; Vol 6, No 3 (2020)
eng
Copyright (c) 2020 Athanasios G. Lazaropoulos
oai:ojs.futureenergysp.com:article/165
2024-03-09T01:48:30Z
tre:ART
driver
nmb a2200000Iu 4500
"231119 2023 eng "
2376-2144
2376-2136
dc
Big Data and Neural Networks in Smart Grid - Part 2: The Impact of Piecewise Monotonic Data Approximation Methods on the Performance of Neural Network Identification Methodology for the Distribution Line and Branch Line Length Approximation of Overhead Low-Voltage Broadband over Powerlines Networks
Lazaropoulos, Athanasios G.
1: School of Electrical and Computer Engineering / National Technical University of Athens / 9 Iroon Polytechniou Street / Zografou, GR 15780
2: Department of Industrial Design and Production Engineering / School of Engineering / University of West Attica / 250 Thivon & P. Ralli / Athens, GR 12244 http://orcid.org/0000-0002-1940-6989
Leligou, Helen C.
Department of Industrial Design and Production Engineering / School of Engineering / University of West Attica / 250 Thivon & P. Ralli / Athens, GR 12244
Smart Grid; Broadband over Power Lines (BPL) networks; Power Line Communications (PLC); Distribution and Transmission Power Grids; Neural Networks; Big Data; Modeling; Measurements; Piecewise Monotonic Data Approximations
Τhe impact of measurement differences that follow continuous uniform distributions (CUDs) of different intensities on the performance of the Neural Network Identification Methodology for the distribution line and branch Line Length Approximation (NNIM-LLA) of the overhead low-voltage broadband over powerlines (OV LV BPL) topologies has been assessed in [1]. When the αCUD values of the applied CUD measurement differences remain low and below 5dB, NNIM-LLA may internally and satisfactorily cope with the CUD measurement differences. However, when the αCUD values of CUD measurement differences exceed approximately 5dB, external countermeasure techniques against the measurement differences are required to be applied to the contaminated data prior to their handling by NNIM-LLA. In this companion paper, the impact of piecewise monotonic data approximation methods, such as L1PMA and L2WPMA of the literature, on the performance of NNIM-LLA of OV LV BPL topologies is assessed when CUD measurement differences of various αCUD values are applied. The key findings that are going to be discussed in this companion paper are: (i) The crucial role of the applied numbers of monotonic sections of the L1PMA and L2WPMA for the overall performance improvement of NNIM-LLA approximations as well as the dependence of the applied numbers of monotonic sections on the complexity of the examined OV LV BPL topology classes; and (ii) the performance comparison of the piecewise monotonic data approximation methods of this paper against the one of more elaborated versions of the default operation settings in order to reveal the most suitable countermeasure technique against the CUD measurement differences in OV LV BPL topologies.
Citation: Lazaropoulos, A. G., & Leligou, H. C. (2024). Big Data and Neural Networks in Smart Grid - Part 2: The Impact of Piecewise Monotonic Data Approximation Methods on the Performance of Neural Network Identification Methodology for the Distribution Line and Branch Line Length Approximation of Overhead Low-Voltage Broadband over Powerlines Networks. Trends in Renewable Energy, 10, 67-97. doi: https://doi.org/10.17737/tre.2024.10.1.00165
More information about the Future Energy Service and Publishing
2023-03-03 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/165
Trends in Renewable Energy; Vol 10, No 1 (2024)
eng
Copyright (c) 2024 Athanasios G. Lazaropoulos, Helen C. Leligou
oai:ojs.futureenergysp.com:article/8
2017-01-20T23:22:26Z
tre:REV
driver
nmb a2200000Iu 4500
"150228 2015 eng "
2376-2144
2376-2136
dc
Development of Green Biorefinery for Biomass Utilization: A Review
Xiu, Shuangning
North Carolina A&T State University
Shahbazi, Abolghasem
North Carolina A&T State University
Green Biorefinery; Biomass; Grass; Biofuel; Renewable Energy; Aquatic Plants; Algae; Switchgrass; Grant Miscanthus
Green biorefineries are multiproduct systems, which utilize green biomass as an abundant and versatile raw material for the manufacture of industrial products. It represents an innovative approach to alternative applications of surplus grassland biomass. An overview of the main aspects, activities, and processing technologies was presented in this paper. Recent developments on the green biorefinery in both Europe and North America were discussed. A focus for future R&D work in this field was recommended.
Citation:Â Xiu, S., and Shahbazi, A. (2015). "Development of Green Biorefinery for Biomass Utilization: A Review." Tr. Ren. Energy, 1(1), 4-15. DOI: 10.17737/tre.2015.1.1.008
More information about the Future Energy Service and Publishing
2015-03-15 00:00:00
Peer-reviewed article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/8
Trends in Renewable Energy; Vol 1, No 1 (2015)
eng
Copyright (c) 2015 Shuangning Xiu and Abolghasem Shahbazi
oai:ojs.futureenergysp.com:article/38
2018-03-29T16:03:05Z
tre:ART
driver
nmb a2200000Iu 4500
"171006 2017 eng "
2376-2144
2376-2136
dc
Main Line Fault Localization Methodology in Smart Grid – Part 3: Main Line Fault Localization Methodology (MLFLM)
Lazaropoulos, Athanasios G.
National Technical University of Athens / School of Electrical and Computer Engineering http://orcid.org/0000-0002-1940-6989
Smart Grid; Intelligent Energy Systems; Broadband over Power Lines (BPL) Networks; Power Line Communications (PLC); Faults; Fault Analysis; Fault Localization; Distribution Power Grids
Since the main distribution line faults can be securely identified as outlined in the first and second paper, this third paper presents the methodology of localizing the main distribution line fault when broadband over power lines (BPL) networks have already been deployed across the distribution power grids. The main issue of this paper is the detailed presentation of the main line localization methodology (MLFLM) as well as well as its performance assessment when measurement differences occur.
The contribution of this paper, which is focused on the application of MLFLM, is double. First, the procedure, which is followed in order to create the database of faults and is used by MLFLM, is here analytically presented. This database is based on the application of the main distribution line fault identification percentage metric (MDLFI) to coupling reflection coefficients of all possible fault OV MV BPL topologies (modified OV MV BPL topologies). Second, the performance assessment of MLFLM is investigated with respect to the nature of the measurement differences and the location of main distribution line faults across the distribution power grid.
More information about the Future Energy Service and Publishing
2017-09-27 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/38
Trends in Renewable Energy; Vol 3 (2017): SPECIAL ISSUE ON SMART GRID (2)
eng
Copyright (c) 2017 Athanasios G. Lazaropoulos
oai:ojs.futureenergysp.com:article/84
2020-04-29T02:50:02Z
tre:ART
driver
nmb a2200000Iu 4500
"190425 2019 eng "
2376-2144
2376-2136
dc
Green Refining of Waste Lubricating Oil: A China Perspective
Wu, Jinlong
Li, Bo
Wang, Wei
Yang, Shu
Liu, Peng
Zhang, Bo
Yang, Changyan
Ding, Yigang
Waste lubricating oil; Green refining; Pretreatment; Thermal extraction and sedimentation; Response surface methodology
Presently, many regeneration processes of waste lubricating oil, such as catalytic hydrogenation, are available. However, some of these processes are highly costly and not suitable for Chinese economic conditions, and some may produce contaminated impurities such as acid slag, which cannot meet environmental protection requirements. This study aims to develop a green process for the regeneration of waste lubricating oil into a base oil, which should meet the requirements of green chemistry, have the characteristics of simple operation, low cost, less pollution and high recovery rate, and turn wastes into renewable resources. The new process developed via this research has three stages. First, mechanical and large particle impurities in the waste lubricating oil were removed by pretreatment. Second, most of the colloid and asphaltene were removed by thermal extraction and sedimentation. Finally, the activated bleaching earth was used to further purify the waste lubricating oil. The performance evaluation of the finally obtained lubricating base oil conformed to the standard of the HVI-100 lubricating oil. The total recovery rate of the process was about 63.5%.
Citation:Â Wu, J., Li, B., Wang, W., Yang, S., Liu, P., Yang, C., and Ding, Y. (2019). Green Refining of Waste Lubricating Oil: A China Perspective. Trends in Renewable Energy, 5, 165-180. DOI: 10.17737/tre.2019.5.2.0084
More information about the Future Energy Service and Publishing
2019-04-01 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/84
Trends in Renewable Energy; Vol 5, No 2 (2019)
eng
Copyright (c) 2019 Jinlong Wu, Bo Li, Wei Wang, Shu Yang, Peng Liu, Bo Zhang, Changyan Yang, Yigang Ding
oai:ojs.futureenergysp.com:article/142
2022-11-22T02:59:40Z
tre:ART
driver
nmb a2200000Iu 4500
"220320 2022 eng "
2376-2144
2376-2136
dc
Life Cycle Assessment of a Coke Cleaning Agent
Gong, Yu
Yang, Changyan
http://scholar.google.com/citations?user=JqmEEfkAAAAJ&hl=en
Qu, Yinhang
Li, Jiayi
Yang, Bohan
Ding, Yigang
Zhang, Bo
Life Cycle Assessment; Descaling Agent; Carbon Footprint; Coke; Production
The life cycle assessment of the coke cleaning agent developed by a university-enterprise cooperation project was conducted. This cleaning agent has the characteristics of phosphorus-free, environmentally friendly, and broad market prospects. The life cycle assessment of the established model showed that the GWP of producing 1kg of coke cleaning agent is 1.19 kg CO2 eq, PED is 13.17 MJ, WU is 186.74 kg, AP is 3.63E-03 kg SO2 eq, ADP is 7.75E-05 kg antimony eq, EP is 1.30E-03 kg PO43-eq, RI is 1.16E-03 kg PM2.5 eq, ODP is 4.63E-06 kg CFC-11 eq, and POFP is 1.85E-03 kg NMVOC eq .The uncertainty of the results is between 4.20% and 24.05%. The carbon footprint (GWP) analysis showed that the production process of isotridecanol polyoxyethylene ether, isopropanol, fatty alcohol polyoxyethylene ether M and isodecanol polyoxyethylene ether contributed significantly. The average sensitivity analysis showed that the most influential processes were sodium lauryl amphoacetate, isopropanol, and tripropylene glycol methyl ether.
Citation: Gong, Y., Yang, C., Qu, Y., Li, J., Yang, B., Ding, Y., and Zhang, B. (2022). Life Cycle Assessment of a Coke Cleaning Agent. Trends in Renewable Energy, 8(1), 67-83. DOI: 10.17737/tre.2022.8.1.00142
More information about the Future Energy Service and Publishing
2022-03-22 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/142
Trends in Renewable Energy; Vol 8, No 1 (2022)
eng
Copyright (c) 2022 Yu Gong, Changyan Yang, Yinhang Qu, Jiayi Li, Bohan Yang, Yigang Ding, Bo Zhang
oai:ojs.futureenergysp.com:article/20
2017-01-20T20:05:43Z
tre:ED
driver
nmb a2200000Iu 4500
"160405 2016 eng "
2376-2144
2376-2136
dc
Visions about a Renewable Future
Bai, Attila
Associate prof., The University of Debrecen https://www.researchgate.net/profile/Attila_Bai2
Renewable Future; carbon dioxide disposal; renewable future; solar energy; Sustainable development; waste heat; wind energy; young researchers
Motto: “It is better to light a candle than curse the darkness.†(Chinese wisdom)
     The publication of the new issue of our journal coincides with Easter, the biggest Christian celebration, which is about our trust in the future and the self-sacrificing work performed to achieve this future, as well as renewal. The future of Earth is shaped by the current youth, while that of energetics is shaped by renewables. For this reason, one of the main objectives of our journal is to help young researchers with high-ranking publication opportunities and high-standard knowledge about the future’s energy. Therefore, it is a great feeling to dip into the fourth issue and to thank those who contributed either as editors, authors, reviewers or readers. I would like to strongly encourage anyone who is thinking about joining us in the future.
      Despite the energy saving measures currently in force, the increase of living standards calls for increasing amount of energy which appears mainly in developing countries. However, the energy consumption of the world increased only by 0.5% in 2014 (to 575 EJ) in comparison with the previous year which was significantly exceeded by the increase of GDP (2.9% per year); therefore, specific energy consumption became much more efficient. At the same time, the difference of the spatial structure of production and use, the environmental protection issues caused by fossil energy resources and the fact that their extraction cannot be increased even in the mid-term pose serious problems. For this reason, sustainable development can only take place with the increased use of renewable energy which calls for the use of different procedures, technologies, and plant size in each country. In 2015, around 329 billion USD was invested into energy projects, but, according to IMF World Economic Outlook Update 2016 [1], in order to make the energy sector environmental friendly, at least 16,500 billion USD would need to be invested globally of the 68,000 billion USD which the countries of the world planned to invest into the energy industry until 2040 anyway [1]. Policymakers decide about sums, strategic and geopolitical interests which are almost impossible to comprehend. However, we, researchers, voters, and energy consumers are also able to make positive influences which we would like to do also with our journal by publishing new findings, objective data and conclusions.
It is obvious that there will probably never be any energy resource that is cheap, energy-friendly, does not endanger the interests of any economic sector, has infinite feedstock basis and end product market, while creating lots of new employment possibilities at the same time. For this reason, it is difficult to estimate which renewable energetic procedure will become widespread, as well as to what extent and how quickly.
      The main feedstock of heat production – which is the cheapest and most widely used type of energy – will probably remain biomass in the future. Based on the currently prevailing forestry products – in order to guarantee the saving of arable land –, the significance of special energy plantations and by-products is expected to increase. The latter can mostly be used for local purposes which will result in the possibility of reducing energetic and transport losses.
      In the mid-term, China is expected to use solar and water energy, Western Europe will use wind energy and the United States will use solar energy for electricity production purposes. The utilisation of waste heat produced by power plants can play an important role in the development of local communities (job creation, local taxes) in addition to energy efficiency by means of attracting heat energy-demanding industries.
      In the fuel market, the spreading of next generation biofuels is expected to replace the economically and energetically most problematic first generation biodiesel within some years, as well as maize-based and eventually (in the long run) even sugar cane-based bioethanol production. As a consequence, the price of timber industry products and crop production by-products will increase, as well as the price of feed as a result of disappearing first generation fuel by-products and there will be a notable increase of proportion of energy plantations in the field crop rotation. The advantage of the latter phenomenon could be the involvement of less favourable arable land into production, while a potential disadvantage is intensifying deforestation.
      In my opinion, the only potential successful procedures are the ones which are able to solve waste- and carbon dioxide disposal at the same time in addition to energy production, the ones which can be operated in a closed systems (with no waste generation) and are able to produce various types of end products. Of these, the most promising alternatives may be the animal feed- or biodiesel-focused utilisation of algae species, produced with simplified (cheaper) PBR technologies, using flue gases and waste heat produced in wastewater-based biogas plants (or fossil power plants) - from the aspects of environmental protection, economics and novelty content. Furthermore, at the consumer level, I think that local public transport (buses) could be the first step of a wider range of using biofuels, since it would provide a possibility to use a significant amount of biofuel for masses of lower income people especially in city traffic, where pollutant emission appears in a concentrated amount and refuelling can be smoothly performed even if no countrywide fuel station system is established.
      While oil contributed to the enrichment of Arab countries half a century ago, I think that the need for higher biomass productivity and sustainability in the future will primarily result in the flourishing of capital export to tropical countries.
      As a matter of course, these are only general remarks and problems and looking for a solution always takes a specific set of circumstances. This is why we established our journal. Feel free to send us your manuscripts, opinions and suggestions and, if you think our published papers deserve it, please recommend them to your acquaintances and cite us!Â
Citation:Â Â Bai, A. (2016). "Visions about a Renewable Future." Trends in Renewable Energy, 2(2), 51-53. DOI: 10.17737/tre.2016.2.2.0020
More information about the Future Energy Service and Publishing
2016-04-05 00:00:00
Editorial
application/pdf
http://futureenergysp.com/index.php/tre/article/view/20
Trends in Renewable Energy; Vol 2, No 2 (2016)
eng
Copyright (c) 2016 Dr. habil Bai Attila
oai:ojs.futureenergysp.com:article/57
2018-05-13T02:53:03Z
tre:RIEECS2017
driver
nmb a2200000Iu 4500
"180430 2018 eng "
2376-2144
2376-2136
dc
Operation of Symmetrical and Asymmetrical Two-Phase Induction Motor by Using 3-Leg Voltage Source Inverter
Umredkar, Sheetal Vishal
Ramdeobaba College of Engineering and Management, Nagpur
Junghare, Abhishek
S. B. Jain Institute of Technology and Research
Renge, Mohan
Ramdeobaba College of Engineering and Management, Nagpur
Two-phase motor; Two-phase supply; Scott-T transformer; Sine PWM; 3-Leg voltage source Inverter (VSI)
The importance and demand of renewable energy have increased rapidly, especially due to the fact that the fossil fuels are reducing at an alarming rate. Out of the existing sources of renewable energies, solar energy has been very popular due to obvious abundance and convenience. The predominant use of electrical energy is heating, ventilation and air conditioning in residential and industrial sector. Single phase induction motor is widely used for such low-power appliances like pumps, compressors, agriculture equipment’s and blowers. In order to avoid losses and low-starting torque, we intend to use the single-phase induction motor as an asymmetrical two-phase induction motor, which will run on a two-phase supply yielding better efficiency, speed control and power factor. If a three-phase supply is available, Scott-T transformer can be used to get two-phase supply. However, if there is only single-phase supply available, two-phase inverter with Sine Pulse Width Modulation (SPWM) technique can be used. This paper presents the method for two-phase supply using the 3-leg voltage source inverter (VSI) which is used to supply asymmetrical and symmetrical two-phase induction motor. The 16 bit microcontroller dsPIC is used for SPWM signal generation.
Citation:Â Umredkar, S. V., Junghare, A., and Renge, M. (2018). Operation of Symmetrical and Asymmetrical Two-Phase Induction Motor by Using 3-Leg Voltage Source Inverter. Trends in Renewable Energy, 4, 64-76. DOI: 10.17737/tre.2018.4.3.0057
More information about the Future Energy Service and Publishing
2018-04-22 00:00:00
application/pdf
http://futureenergysp.com/index.php/tre/article/view/57
Trends in Renewable Energy; Vol 4 (2018): Special Issue on International Conference on Recent Innovations in Electrical, Electronics and Communication Systems (RIEECS 2017)
eng
Copyright (c) 2018 Sheetal Vishal Umredkar, Abhishek Junghare and M. M. Renge
oai:ojs.futureenergysp.com:article/114
2020-05-25T02:45:29Z
tre:ART
driver
nmb a2200000Iu 4500
"200407 2020 eng "
2376-2144
2376-2136
dc
Global Solar Radiation Characteristics at Calabar and Port Harcourt Cities in Nigeria
Amadi, Solomon Okechukwu
Dept of Physics, Geology, Geophysics, Alex Ekwueme Federal University
Dike, Timothy
Nwokolo, Samuel Chukwujindu
Global solar radiation; Clearness index; Extraterrestrial solar radiation; Calabar; Nigeria
This study analyzed the inter-annual variability in solar radiation at Port Harcourt and Calabar, aiming at improving knowledge of solar resources. For the investigation, monthly mean global solar radiation data for fifteen years (2000 – 2014) was collected from Nigerian Meteorological Agency (NIMET), and the monthly mean extraterrestrial solar radiation was determined using globally recognized standard relation. The clearness index parameter was employed for characterizing the spatial variability of solar radiation for Calabar and Port Harcourt. The statistics of the monthly mean solar radiation deviations of Port Harcourt and Calabar was tested using the Kolmogorov–Smirnov method. The test results showed that they are normally distributed random variables. Furthermore, the analysis of sequential properties showed that the coefficients of the auto-correlation with lag 1 are significant for both stations. The auto-correlation coefficients with lag 1, though usually not significant, are negative for both stations. The auto regression lag 1 (AR-1) is the recommended procedure (model equation) for generating monthly solar radiation synthetic time series, with auto-correlation coefficients varying from 0.30 to 0.47 for both stations in the South-South of Nigeria.
Citation:Â Amadi, S. (2020). Global Solar Radiation Characteristics at Calabar and Port Harcourt Cities in Nigeria. Trends in Renewable Energy, 6, 101-120. DOI: 10.17737/tre.2020.6.2.00114
More information about the Future Energy Service and Publishing
2020-04-07 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/114
Trends in Renewable Energy; Vol 6, No 2 (2020)
eng
Copyright (c) 2020 Solomon Okechukwu Amadi, Timothy Dike, Samuel Chukwujindu Nwokolo
oai:ojs.futureenergysp.com:article/157
2023-10-26T00:45:09Z
tre:REV
driver
nmb a2200000Iu 4500
"230322 2023 eng "
2376-2144
2376-2136
dc
Research Progress of Nanofluid Heat Pipes in Automotive Lithium-ion Battery Heat Management Technology
Wang, Xinyu
Zhao, Yanan
Jin, Yezhu
Battery heat management; Heat pipe; Nanofluid heat pipe; Lithium-ion battery
Power batteries are a crucial component of electric vehicles and other electric equipment. Their long-term high-rate discharge generates a lot of heat, which can lead to battery failure, shortened battery life, and even safety accidents if not managed properly. Due to its high thermal conductivity, the heat pipe can quickly conduct heat away from the battery and separate the heat source from the heat sink. In addition, due to its excellent isothermal performance, the heat pipe can also achieve the characteristics of low-temperature preheating and high-temperature cooling of the power battery by reducing the inhomogeneity of the battery temperature field to reduce the temperature difference. In this paper, we review the current state of the art in thermal management of automotive lithium-ion battery, and highlight the current state of thermal management of batteries based on the combination of nanofluids and heat pipes. Finally, the development of nanofluidic heat pipes in lithium-ion battery heat management systems is prospected.
Citation: Wang, X., Zhao, Y., & Jin, Y. (2023). Research Progress of Nanofluid Heat Pipes in Automotive Lithium-ion Battery Heat Management Technology. Trends in Renewable Energy, 9(2), 137-156. doi:http://dx.doi.org/10.17737/tre.2023.9.2.00157
More information about the Future Energy Service and Publishing
2023-12-01 00:00:00
Peer-reviewed article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/157
Trends in Renewable Energy; Vol 9, No 2 (2023)
eng
Copyright (c) 2023 Xinyu Wang, Yanan Zhao, Yezhu Jin
oai:ojs.futureenergysp.com:article/34
2017-11-14T19:25:31Z
tre:ART
driver
nmb a2200000Iu 4500
"171010 2017 eng "
2376-2144
2376-2136
dc
Improvement of Power Systems Stability by Applying Topology Identification Methodology (TIM) and Fault and Instability Identification Methodology (FIIM) – Study of the Overhead Medium-Voltage Broadband over Power Lines (OV MV BPL) Networks Case
Lazaropoulos, Athanasios G.
National Technical University of Athens (NTUA) / School of Electrical and Computer Engineering http://orcid.org/0000-0002-1940-6989
Smart Grid; Intelligent Energy Systems; Broadband over Power Lines (BPL) Networks; Power Line Communications (PLC); Faults; Fault Analysis; Fault Identification and Prediction; Distribution Power Grids
The performance of two useful piecewise monotonic data approximation (PMA) applications that are Topology Identification Methodology (TIM) and Fault and Instability Identification Methodology (FIIM) is investigated in this paper for the overhead medium-voltage broadband over power lines (OV MV BPL) networks. TIM and FIIM are applied to OV MV BPL networks when measurement differences, faults and instabilities occur. By exploiting the L1PMA optimal number of monotonic sections, advanced TIM and FIIM are also proposed and applied to OV MV BPL networks. The results of the four PMA applications are compared and it is found that advanced TIM and FIIM achieve higher computational speeds and almost equivalent identification performance in comparison with the respective original TIM and FIIM. Exploiting the better performance metrics of advanced TIM and FIIM, PMA applications provide a stable step towards the real time surveillance and monitoring of transmission and distribution power grid.
Citation: Lazaropoulos, A. G. (2017). Improvement of Power Systems Stability by Applying Topology Identification Methodology (TIM) and Fault and Instability Identification Methodology (FIIM) – Study of the Overhead Medium-Voltage Broadband over Power Lines (OV MV BPL) Networks Case. Trends in Renewable Energy, 3, 102-128. DOI: 10.17737/tre.2017.3.2.0034
More information about the Future Energy Service and Publishing
2017-11-15 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/34
Trends in Renewable Energy; Vol 3, No 2 (2017)
eng
Copyright (c) 2017 Athanasios G. Lazaropoulos
oai:ojs.futureenergysp.com:article/81
2019-01-02T01:22:23Z
tre:ART
driver
nmb a2200000Iu 4500
"181026 2018 eng "
2376-2144
2376-2136
dc
Detection of Energy Theft in Overhead Low-Voltage Power Grids – The Hook Style Energy Theft in the Smart Grid Era
Lazaropoulos, Athanasios G.
National Technical University of Athens / School of Electrical and Computer Engineering http://orcid.org/0000-0002-1940-6989
Smart Grid; Broadband over Power Lines (BPL); Power Line Communications (PLC); Distribution Power Grid; Energy Theft
This paper investigates the possibility of detecting the hook style energy theft in the overhead low-voltage (OV LV) power grids when the smart grid conveniences are available. On the basis of the broadband over power lines (BPL) technology and the proposed method of the detection of the hook style energy theft (HS-DET method), a plethora of different scenarios concerning the hook style energy theft is considered so that the performance of HS-DET method can be assessed. The impact of OV LV BPL topologies, hook characteristics and measurement differences on the performance of HS-DET method is mainly assessed through appropriate metrics, such as derivative metrics of percent error sum (PES). Finally, appropriate contour plots against the hook style energy theft are proposed revealing the efficiency of HS-DET method against any relevant threat in any conditions.
Citiation: Lazaropoulos, A. G. (2019). Detection of Energy Theft in Overhead Low-Voltage Power Grids – The Hook Style Energy Theft in the Smart Grid Era. Trends in Renewable Energy, 5(1), 12-46. DOI: 10.17737/tre.2019.5.1.0081
More information about the Future Energy Service and Publishing
2018-01-01 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/81
Trends in Renewable Energy; Vol 5, No 1 (2019)
eng
Copyright (c) 2019 Athanasios G. Lazaropoulos
oai:ojs.futureenergysp.com:article/133
2021-11-04T18:25:38Z
tre:ART
driver
nmb a2200000Iu 4500
"211013 2021 eng "
2376-2144
2376-2136
dc
Information Technology, Artificial Intelligence and Machine Learning in Smart Grid – Performance Comparison between Topology Identification Methodology and Neural Network Identification Methodology for the Branch Number Approximation of Overhead Low-Voltage Broadband over Power Lines Network Topologies
Lazaropoulos, Athanasios G.
http://orcid.org/0000-0002-1940-6989
Smart Grid; Broadband over Power Lines (BPL) networks; Power Line Communications (PLC); Distribution and Transmission Power Grids; Neural Networks; Machine Learning; IT; Modeling; Artificial Intelligence
Broadband over Power Lines (BPL) networks that are deployed across the smart grid can benefit from the usage of machine learning, as smarter grid diagnostics are collected and analyzed. In this paper, the neural network identification methodology of Overhead Low-Voltage (OV LV) BPL networks that aims at identifying the number of branches for a given OV LV BPL topology channel attenuation behavior is proposed, which is simply denoted as NNIM-BNI. In order to identify the branch number of an OV LV BPL topology through its channel attenuation behavior, NNIM-BNI exploits the Deterministic Hybrid Model (DHM), which has been extensively tested in OV LV BPL networks for their channel attenuation determination, and the OV LV BPL topology database of Topology Identification Methodology (TIM). The results of NNIM-BNI towards the branch number identification of OV LV BPL topologies are compared against the ones of a newly proposed TIM-based methodology, denoted as TIM-BNI.
Citation: Lazaropoulos, A. G. (2021). Information Technology, Artificial Intelligence and Machine Learning in Smart Grid-Performance Comparison between Topology Identification Methodology and Neural Network Identification Methodology for the Branch Number Approximation of Overhead Low-Voltage Broadband over Power Lines Network Topologies. Trends in Renewable Energy, 7, 87-113. DOI: 10.17737/tre.2021.7.1.00133
More information about the Future Energy Service and Publishing
2021-12-31 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/133
Trends in Renewable Energy; Vol 7 (2021)
eng
Copyright (c) 2021 Athanasios G. Lazaropoulos
oai:ojs.futureenergysp.com:article/14
2017-01-20T22:43:44Z
tre:ART
driver
nmb a2200000Iu 4500
"150910 2015 eng "
2376-2144
2376-2136
dc
Financially Stimulating Local Economies by Exploiting Communities’ Microgrids: Power Trading and Hybrid Techno-Economic (HTE) Model
Lazaropoulos, Athanasios G.
School of Electrical and Computer Engineering
National Technical University of Athens
9 Iroon Polytechniou Street, Zografou
Athens, Greece 15780 http://orcid.org/0000-0002-1940-6989
Lazaropoulos, Panagiotis
Department of Accounting and Finance
Athens University of Economics and Business
76 Patission Avenue, Athens
Athens, Greece 10434
Microgrids (MGs); Power Trading; Energy Arbitrage; Energy Storage Systems (ESSs); Distributed Generation (DG) sources; Renewable Energy Sources (RESs); Green Economy; Sustainable Development and Growth; Economy of Local Communities; Smart Grid
This paper thoroughly considers the potential of installing microgrids (MGs) in communities that suffer from the economic crisis in order to financially stimulate their local economies. Exploiting the state-of-the-art evolutions in the fields of the MG technology, the Hybrid Techno-Economic (HTE) model is proposed as a suitable techno-economic tool for assessing the power generation/consumption behaviour and the financial performance of these communities’ MGs.
The contribution of this paper is four-fold. First, the HTE model is presented. HTE model describes a theoretical analysis that is suitable for studying community’s MGs. Appropriately concatenating one well-validated technical module and one new economic module, the HTE model quickly and conveniently reveals the power generation/consumption and economic profile of community’s MGs. Second, HTE model is integrated through an extended portfolio of power and financial metrics. The applied metrics study the influence of generation and consumption power changes on community’s MGs. The validity and the efficiency of the HTE model are examined with respect to these power changes while the impact of these changes on the power and cash flows of community’s MGs are assessed. Third, a cost-benefit analysis of the operation of community’s MGs accompanied with a financial stability analysis is also demonstrated. The main outcome of these analyses is the daily total benefit (TB) of community’s MGs with its respective financial bounds. Fourth, the contribution of the energy arbitrage and the power production mix among available power sources of community’s MGs to the daily TB is investigated.
Apart from promoting the ecological awareness, this paper tries to become a catching argument for the communities in order to exploit the community’s MGs.
Citation: Lazaropoulos, A. G., and Lazaropoulos, P. (2015). Financially Stimulating Local Economies by Exploiting Communities’ Microgrids: Power Trading and Hybrid Techno-Economic (HTE) Model. Trends in Renewable Energy, 1(3), 131-184. DOI: 10.17737/tre.2015.1.3.0014
More information about the Future Energy Service and Publishing
2015-09-10 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/14
Trends in Renewable Energy; Vol 1, No 3 (2015)
eng
Copyright (c) 2015 Athanasios G. Lazaropoulos and Panagiotis Lazaropoulos
oai:ojs.futureenergysp.com:article/63
2018-05-03T13:56:10Z
tre:ART
nmb a2200000Iu 4500
"180412 2018 eng "
2376-2144
2376-2136
dc
Enhancement of the Rooftop Photovoltaic Array Characteristic Interconnected by the Grid under Partial Shading Condition by using Cascaded DC/DC Converter [WITHDRAWN]
Mohamed, Ahmed M.
Ain shams university
Saffan, Salah M.
Ain shams university
Attalla, Ahmed M.
Elgohary, Hamdy
This article was withdrawn by the Editor-in-Chief, because it’s found to be a duplicated submission of authors’ publication in other journal:
Ahmed M. Mahmoud, Salah M. Saafan, Ahmed M. Attalah. (2018) Enhancement of the rooftop Photovoltaic array characteristic interconnected by the grid under partial shading condition by using cascaded DC/DC converter. International Journal of Power Systems, 3, 42-52
More information about the Future Energy Service and Publishing
2017-11-24 00:00:00
Peer-reviewed Article
http://futureenergysp.com/index.php/tre/article/view/63
Trends in Renewable Energy; Vol 4, No 1 (2018)
eng
Copyright (c) 2018 Ahmed M. Mahmoud, Salah M. Saafan, Ahmed M. Attalla and Hamdy Elgohary
oai:ojs.futureenergysp.com:article/107
2019-12-05T04:28:17Z
tre:ART
driver
nmb a2200000Iu 4500
"191130 2019 eng "
2376-2144
2376-2136
dc
Impact of Sunshine Duration and Clearness Index on Diffuse Solar Radiation Estimation in Mountainous Climate
Nwokolo, Samuel Chukwujindu
University of Calabar, Calabar, Nigeria
Otse, Christiana Queennet
Department Estate Management, Faculty of Environmental Design and Management, Obafemi Awolowo University, Ile-Ife
Diffuse solar radiation; Empirical models; Classification; Functional forms; Hyderabad; Pakistan
In this paper, measured data of solar radiation was applied to develop forty-three (43) empirical models for estimation of monthly average diffuse solar radiation using clearness index, sunshine duration and a combination of them as predictors. The data covered a period of two years from May 2015 to April 2017 and was measured at Mehran University of Engineering and Technology, Hyderabad, Pakistan. Through a comprehensive statistical performance analysis, 43 dimensional models developed were tested for constructing the most accurate regression model to predict the monthly mean daily diffuse solar radiation in Hyderabad, Pakistan. On the whole, the model 42 – a hybrid of sunshine duration and clearness index predictors of diffuse fraction outperformed the remaining models proposed in this study. The best model (model 42) was then compared with 5 models and 5 measured data of diffuse solar radiation available in the literature and the NASA database by applying statistical indicators such as MBE, MPE, RMSE, RRMSE, R2 and GPI. Through the analysis, the hybrid of sunshine duration and clearness index predictors of diffuse fraction model (model 42) was selected as the most appropriate model. The study concluded that the proposed hybrid model can serve as a baseline for the design of photovoltaic systems and estimate the monthly mean daily diffuse solar radiation on the horizontal surface for Hyderabad, Pakistan and other locations with similar local climate conditions.
Citation: Nwokolo, S.C. and Otse, C.Q. (2019). Impact of Sunshine Duration and Clearness Index on Diffuse Solar Radiation Estimation in Mountainous Climate. Trends in Renewable Energy, 5, 307-332. DOI: 10.17737/tre.2019.5.3.00107
More information about the Future Energy Service and Publishing
2019-07-26 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/107
Trends in Renewable Energy; Vol 5, No 3 (2019)
eng
Copyright (c) 2019 Samuel Chukwujindu Nwokolo, Christiana Queennet Otse
oai:ojs.futureenergysp.com:article/146
2023-03-21T02:38:19Z
tre:REV
driver
nmb a2200000Iu 4500
"221127 2022 eng "
2376-2144
2376-2136
dc
Current Status of Research on Biodiesel as an Alternative Fuel for Internal Combustion Engines
Liu, Ganli
North China University of Water Resources and Electric Power
Renewable Energy; Alternative fuels; Biodiesel; Combustion; Emission; Spraying characteristics
In this paper, the research on biodiesel or blending with other fuels is reviewed. Based on the current status of biodiesel research, this paper introduces the current research progress, combustion and emission characteristics, blending with other fuels, and development direction of biodiesel. The combustion, emission, and spray of biodiesel are not exactly the same as diesel, so it is not suitable to be used directly in diesel engines. Biodiesel can be blended with diesel, ethanol, ammonia and other fuels to improve its power performance and reduce harmful emissions. This review can serve as an important reference for those who want to engage in biodiesel research, and a quick understanding of biodiesel research before.
Citation: Liu, G. (2022). Current Status of Research on Biodiesel as an Alternative Fuel for Internal Combustion Engines. Trends in Renewable Energy, 9(1), 11-21. DOI: 10.17737/tre.2023.9.1.00146
More information about the Future Energy Service and Publishing
2023-03-20 00:00:00
Peer-reviewed article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/146
Trends in Renewable Energy; Vol 9, No 1 (2023)
eng
Copyright (c) 2023 Ganli Liu
oai:ojs.futureenergysp.com:article/31
2017-02-07T04:01:52Z
tre:ART
driver
nmb a2200000Iu 4500
"170101 2017 eng "
2376-2144
2376-2136
dc
Optimization of Raw Material Composition in an Agricultural Biogas Plant
Mézes, Lili
Bai, Attila
University of Debrecen http://orcid.org/0000-0001-9323-7311
Nagy, Dávid
Cinka, István
Gabnai, Zoltán
Biogas; Optimization; Heterosis Effect; Feedstock; Substrate
We analyzed the operation of a typical agricultural biogas plant in Hungary. Our aim was to optimize the composition of substrates for the biogas production and make a correct recommendation for completing feedstock recipes by considering the raw materials and technologies analyzed. The calculations were based on a very detailed database (including the daily operating data of 1673 days). Distribution of the biogas yields in summer and winter periods was normal based on the One-Sample Kolmogorov-Smirnov test, while the variance of data was homogeneous based on the Levene-test. Factor analysis of the biogas yield was performed with the Kaiser-Meyer-Olkin Measure of Sampling Adequacy probe (0.616) and the Bartlett's Test. According to the objectivity of our LP (linear program) model, we believe that a significant excess biogas yield (18-66%) could be achieved by the use of our model compared to the actual measured data. Although the amount of corn silage, grass silage, and the extract – as variables – was minimal in the recipe, they played a crucial role in the total biogas yield of the recipe because of their significantly higher organic matter contents and specific biogas yields. Our results could provide a reliable foundation for optimizing of the recipe in biogas plants with raw material base similar to the analyzed plants.
Citation: Mézes, L., Bai, A., Nagy, D., Cinka, I., and Gabnai, Z. (2017). Optimization of Raw Material Composition in an Agricultural Biogas Plant. Trends in Renewable Energy, 3(1), 61-75. DOI: 10.17737/tre.2017.3.1.0031
More information about the Future Energy Service and Publishing
2017-01-01 07:29:05
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/31
Trends in Renewable Energy; Vol 3, No 1 (2017)
eng
Copyright (c) 2017 Lili Mézes, Attila Bai, Dávid Nagy, István Cinka, Zoltán Gabnai
oai:ojs.futureenergysp.com:article/68
2018-10-05T21:19:46Z
tre:ART
driver
nmb a2200000Iu 4500
"180605 2018 eng "
2376-2144
2376-2136
dc
Reconfiguration technique for Optimization of the Photovoltaic array output power under partial shading conditions
Mohamed, Ahmed M
Ain shams university
Saafan, Salah M
Attalla, Ahmed M
Elgohary, Hamdy
Photovoltaic Array; Partial shading; Reconfiguration; MATLAB Simulink; Optimization
A partial shading condition is a case under which the PV array is exposed to many problems such as losses of the output power of the PV array, and the PV array has more than one maximum power point (MPP), which makes it so difficult to track the MPP. This paper presents the effect of different partial shading patterns on PV array characteristics and the effect on the output power of the PV array, and provides a comparative literature review on methods to mitigate these effects and the drawbacks of these methods. It also proposed a new reconfiguration strategy that increases the output power of the PV array by 13.8 % from the total power under shadow condition, and a new technique for enhancing the output power of the PV array by 20 % of the total power under fully illumining conditions by controlling the switch matrix between the photovoltaic array and adaptive batteries bank. This paper gives a solution for the problem of the difficulty of tracking the MPP, because the proposed strategy makes only one MPP. The simulation was carried out by using MATLAB Simulink under different shading patterns.
Citation:Â Mohamed, A. M., Saafan, S. M., Attalla, A. M., and Elgohary, H. (2018). Reconfiguration technique for Optimization of the Photovoltaic array output power under partial shading conditions. Trends in Renewable Energy, 4, 111-124. DOI: 10.17737/tre.2018.4.2.0068
More information about the Future Energy Service and Publishing
2018-10-05 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/68
Trends in Renewable Energy; Vol 4, No 2 (2018)
eng
Copyright (c) 2018 Ahmed M. Mahmoud, Salah M. Saafan, Ahmed M. Attalla, Hamdy Elgohary
oai:ojs.futureenergysp.com:article/126
2021-11-04T18:26:30Z
tre:ART
driver
nmb a2200000Iu 4500
"201028 2020 eng "
2376-2144
2376-2136
dc
Technical Overview of the Net Metering in Lebanon
Shabani, Issam
Lebanese University
Chaaban, Mohammad
Lebanese University
Net Metering; Solar PV System; Renewable Energy Resources; Sustainable Energy; On-Grid System; Hawaii Back Feed Problem
In order to realize the best practices to allow the individuals participate in renewable energy production, a collection of legislation was ratified, and a set of decisions was introduced to encourage the prosumer concept. This notion, which is called Net Metering (NEM), is a billing mechanism that credits PV solar system owners for the energy injected to the grid. Lebanon adopts the NEM policy to reduce the demand and boost the grid through increasing the generation capacity. The decline of solar equipment cost encourages people to subscribe to the NEM service by utilizing the PV solar systems. The implementation of the NEM service provides the customers with leverage over their electricity bills. However, connecting the home micro grid into the vast grid is not easy. It imposes many technical challenges which are discussed in this article.
More information about the Future Energy Service and Publishing
2020-07-24 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/126
Trends in Renewable Energy; Vol 6, No 3 (2020)
eng
Copyright (c) 2020 Issam Shabani, Mohammad Chaaban
oai:ojs.futureenergysp.com:article/166
2024-03-09T01:48:30Z
tre:ART
driver
nmb a2200000Iu 4500
"231206 2023 eng "
2376-2144
2376-2136
dc
Africa's Path to Sustainability: Harnessing Technology, Policy, and Collaboration
Nwokolo, Samuel Chukwujindu
University of Calabar
Eyime, Eyime Echeng
University of Calabar
Obiwulu, Anthony Umunnakwe
University of Lagos
Ogbulezie, Julie C.
University of Calabar
Sustainability; Innovation; Renewable Energy; Digital Transformation; African Context; Technological Barriers
This paper explores the significant role of technological advancements, strategic policies, and collaborations in driving Africa towards a more sustainable future. It highlights how the continent's increasing adoption of innovative technologies, such as renewable energy solutions and digital infrastructure, coupled with well-crafted strategic policies and international collaborations, is transforming various sectors and fostering a sustainable future. These advancements have not only improved access to basic services like healthcare and education but have also created new opportunities for economic growth and job creation. The paper emphasizes the importance of ongoing collaborations between African countries and international partners in sharing knowledge, expertise, and resources to accelerate sustainable development efforts across the continent. The paper discusses different international organizations that have collaborated with and assisted Africa in the areas of technical innovation, finance, and knowledge exchange necessary to achieve a full-scale sustainable future. Despite their humanitarian efforts, Africa faces tremendous hurdles in attaining a sustainable future. These challenges range from a lack of access to technology and digital infrastructure in rural areas to difficulties in harnessing technological advancements due to infrastructure and connectivity constraints. These challenges have hindered Africa's ability to fully leverage the potential of technical innovation and digital solutions for a sustainable future. Limited financial resources and investment opportunities have further impeded progress in achieving the necessary infrastructure and connectivity upgrades. The continent is vulnerable to the impacts of climate change, which further hinders its development progress. Therefore, it is crucial for ongoing collaborations between African countries and international partners to address these challenges collectively and work towards long-term solutions for a sustainable future in Africa.
Citation: Nwokolo, S., Eyime, E., Obiwulu, A., & Ogbulezie, J. (2023). Africa's Path to Sustainability: Harnessing Technology, Policy, and Collaboration. Trends in Renewable Energy, 10(1), 98-131. doi:http://dx.doi.org/10.17737/tre.2024.10.1.00166
More information about the Future Energy Service and Publishing
2023-03-03 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/166
Trends in Renewable Energy; Vol 10, No 1 (2024)
eng
Copyright (c) 2024 Samuel Chukwujindu Nwokolo, Eyime Echeng Eyime, Anthony Umunnakwe Obiwulu, Julie C. Ogbulezie
oai:ojs.futureenergysp.com:article/2
2017-01-20T23:24:55Z
tre:REV
driver
nmb a2200000Iu 4500
"150308 2015 eng "
2376-2144
2376-2136
dc
Designing Broadband over Power Lines Networks Using the Techno-Economic Pedagogical (TEP) Method – Part I: Overhead High Voltage Networks and Their Capacity Characteristics
Lazaropoulos, Athanasios G.
School of Electrical and Computer Engineering, National Technical University of Athens (NTUA); Department of Electrical Engineering Educators, School of Pedagogical and Technological Education (ASPETE) http://orcid.org/0000-0002-1940-6989
Education; Educational Policy; Comparative Education; Faculty of Electrical and Computer Engineering; Microwave Engineering; Engineering Economics; Broadband over Power Lines (BPL) modeling; Power Line Communications (PLC); overhead High-Voltage (HV)
This pair of papers proposes the techno-economic pedagogical (TEP) method that is suitable for designing Broadband over Power Lines (BPL) networks in transmission and distribution power grids. During the presentation of TEP method, a review of the recent research efforts concerning BPL networks across transmission and distribution power grids is given.
In this first paper, TEP method demonstrates to undergraduate electrical and computer engineering (ECE) students the interaction between two apparently irrelevant fields of their ECE program: Microwave Engineering and Engineering Economics. On the basis of a set of linear simplifications and suitable techno-economic metrics concerning transmission and capacity properties of overhead High Voltage Broadband over Power Lines (HV/BPL) networks, TEP method reveals the broadband potential of overhead HV/BPL networks to ECE students when different overhead HV/BPL topologies, electromagnetic interference (EMI) regulations and noise conditions are considered. Â
Citation: Lazaropoulos, A.G. (2015). "Designing Broadband over Power Lines Networks Using the Techno-Economic Pedagogical (TEP) Method – Part I: Overhead High Voltage Networks and Their Capacity Characteristics." Trends in Renewable Energy, 1(1), 16-42. DOI: 10.17737/tre.2015.1.1.002
More information about the Future Energy Service and Publishing
2015-03-15 00:00:00
Peer-reviewed article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/2
Trends in Renewable Energy; Vol 1, No 1 (2015)
eng
Copyright (c) 2015 Athanasios G. Lazaropoulos
oai:ojs.futureenergysp.com:article/43
2017-11-14T19:25:31Z
tre:ART
driver
nmb a2200000Iu 4500
"171104 2017 eng "
2376-2144
2376-2136
dc
Energetic and Exergetic Evaluation of Biomass Fired Water Heating System
Panwar, N.L.
Assistant Prof., Department of Renewable Energy Engineering, College of Technology and Engineering, Maharana Pratap University of Agriculture and Technology
Paul, Arjun Sanjay
Department of Renewable Energy Engineering, College of Technology and Engineering, Maharana Pratap University of Agriculture and Technology
Biomass water heater; Exergy efficiency; Thermal efficiency; Rural applications
This paper deals with thermal and exergy efficiencies of biomass fired water heating system. Water heating system is extensively suitable to generate hot water in rural areas. The developed water heating system was tested with Desi babul (Acacia nilotica) wood. Thermal and exergy efficiencies of the system were estimated at 54.5 percent and 6.79 percent, respectively.
Citation:Â Panwar, N. L., and Paul, A. S. (2017). Energetic and Exergetic Evaluation of Biomass Fired Water Heating System. Trends in Renewable Energy, 3, 153-159. DOI: 10.17737/tre.2017.3.2.0043
More information about the Future Energy Service and Publishing
2017-11-15 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/43
Trends in Renewable Energy; Vol 3, No 2 (2017)
eng
Copyright (c) 2017 N. L. Panwar and Arjun Sanjay Paul
oai:ojs.futureenergysp.com:article/96
2019-07-14T17:13:48Z
tre:ART
driver
nmb a2200000Iu 4500
"190528 2019 eng "
2376-2144
2376-2136
dc
Enhancing the Statistical Hybrid Model Performance in Overhead and Underground Medium Voltage Broadband over Power Lines Channels by Adopting Empirical Channel Attenuation Statistical Distribution
Lazaropoulos, Athanasios G.
National Technical University of Athens, School of Electrical and Computer Engineering http://orcid.org/0000-0002-1940-6989
Smart Grid; Broadband over Power Lines (BPL) networks; Power Line Communications (PLC); Distribution Power Grids; Capacity; Statistics; Modeling
Statistical hybrid model is a statistical channel model suitable for the broadband over power lines (BPL) networks while it is based on the statistical processing of channel attenuation and capacity values of preassumed BPL topology classes. One of the key operation elements of the statistical hybrid model, which affects its results fidelity, is the selection of the appropriate channel attenuation statistical distribution among a set of well-known channel attenuation statistical distributions (i.e., such as Gaussian, Lognormal, Wald, Weibull and Gumbel distributions). The selection of the appropriate channel attenuation statistical distribution becomes a hard task since it depends on a number of factors such as the power grid type –either overhead (OV) or underground (UN) power grid–, the representative distribution BPL topology of the examined class, the applied electromagnetic interference (EMI) policies and the used coupling scheme type. The contribution of this paper is to identify the conditions whether the Empirical channel attenuation statistical distribution can act as the default distribution of statistical hybrid model (modified statistical hybrid model) thus replacing the required comparison analysis prior to the selection of the aforementioned distributions of the initial statistical hybrid model. The evaluation comparison is based on the already applied metrics of capacity percentage change and average absolute capacity percentage change.
Citation:Â Lazaropoulos, A. G. (2019). Enhancing the Statistical Hybrid Model Performance in Overhead and Underground Medium Voltage Broadband over Power Lines Channels by Adopting Empirical Channel Attenuation Statistical Distribution. Trends in Renewable Energy, 5, 181-217. DOI: 10.17737/tre.2019.5.2.0096
More information about the Future Energy Service and Publishing
2019-04-01 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/96
Trends in Renewable Energy; Vol 5, No 2 (2019)
eng
Copyright (c) 2019 Athanasios G. Lazaropoulos
oai:ojs.futureenergysp.com:article/140
2022-11-08T03:55:17Z
tre:ART
driver
nmb a2200000Iu 4500
"220323 2022 eng "
2376-2144
2376-2136
dc
Construction of Hydrogen Safety Evaluation Model Based on Analytic Hierarchy Process (AHP)
Xu, Jianlun
Wang, Minghao
Guo, Ping
Analytic Hierarchy Process (AHP); Multi-objective evaluation; Hydrogen safety grade; Hydrogen fuel cell; Alternative energy sources
With the large consumption of traditional primary energy, hydrogen as a clean and renewable energy has been widely studied by scholars around the world. Hydrogen is mainly used in hydrogen internal combustion engine and hydrogen fuel cell. Hydrogen internal combustion engine is the direct combustion of hydrogen as fuel, with the advantages of easy use. Alternatively, hydrogen fuel cell converts the chemical energy of hydrogen into electrical energy by electrochemical reaction, which has the advantages of high efficiency and zero pollution. Regardless of the use method, the safety of hydrogen use needs to be considered. However, in the whole life cycle of hydrogen, the process from hydrogen production to the use of hydrogen in automobiles is extremely complex. There are many factors affecting the safety of hydrogen use, and a single factor cannot be used as an evaluation. In order to make the evaluation of hydrogen safety more complete and accurate, the weight of four primary evaluation indexes and eight secondary evaluation indexes affecting hydrogen safety is determined by analytic hierarchy process, and a reliable hydrogen safety evaluation model is established.
Citation: Xu, J., Wang, M., and Guo, P. (2022). Construction of Hydrogen Safety Evaluation Model Based on Analytic Hierarchy Process (AHP). Trends in Renewable Energy, 8(2), 84-95. DOI: http://dx.doi.org/10.17737/tre.2022.8.2.00140
More information about the Future Energy Service and Publishing
2022-12-01 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/140
Trends in Renewable Energy; Vol 8, No 2 (2022)
eng
Copyright (c) 2022 Jianlun Xu, Minghao Wang, Ping Guo
oai:ojs.futureenergysp.com:article/21
2017-01-20T20:06:31Z
tre:ED
driver
nmb a2200000Iu 4500
"160413 2016 eng "
2376-2144
2376-2136
dc
Biohydrogen Production from Waste Biomass
Zhu, Ming-Jun
Prof., Assistant Dean, School of Bioscience & Bioengineering, South China University of Technology
Lin, Huan-Na
Biohydrogen; Waste Biomass; South China University of Technology; biohydrogen production; Cassava pulp; paper sludge; sugarcane bagasse; spent mushroom compost; Clostridium thermocellum; Thermoanaerobacterium aotearoense; Technological barriers
Biohydrogen production from waste biomass has recently gained more attention. At the South China University of Technology, our research group focuses on biohydrogen production from waste biomass that is based on a consolidated bioprocessing strategy. Cassava pulp, paper sludge, sugarcane bagasse, and spent mushroom compost have all been demonstrated to be feasible feedstocks for hydrogen production with Clostridium thermocellum. Furthermore, co-culture of C. thermocellum and Thermoanaerobacterium aotearoense can enhance the hydrogen production [1]. Besides, our studies showed that surfactant PEG8000 and CaCO3 both have positive effects on the hydrogen production by C. thermocellum [2-4].
How does biohydrogen production from waste biomass catch our eyes and attract us to devote our efforts on it? With the rapid development of economy, all kinds of waste biomass produced every year are increasing. Recycle of waste biomass can avoid pollution following unsatisfactory disposal such as discard, landfill, and incineration in the field directly. Moreover, waste biomass as raw materials have no conflict with food supply. Thus, there is no doubt that biohydrogen from waste biomass is a promising environmentally friendly energy carrier for its high energy content, and its burning feature of producing only water as the by-product. Biohydrogen from waste biomass is renewable and has no contribution to environmental pollution and climate change, which are valuable for the current situation of increasingly serious energy and environmental issues in China and all over the world. Bioprocesses for hydrogen production from a variety of biomass materials even waste biomass are very promising in the near future.
It is wonderful to produce biohydrogen from waste biomass, however, there are some barriers blocking us out of industrial production. Though the utilization of abundant waste biomass can lower the feedstock cost, the cost of biohydrogen production is still less competitive over traditional fuel oil. Furthermore, an inexpensive and simple pretreatment of waste biomass is needed for biohydrogen production. Technological barriers like hydrogen storage, compressor and distribution networks, lack of durable fuel cell technologies, and integration with the existing infrastructure remain to be overcome [5]. The significant problem of low hydrogen yield could be solved by metabolic engineering or co-culture of microorganisms with different advantages. Ideal biohydrogen production should meet the demand of high hydrogen yield and productivity simultaneously.
Appropriate bioreactor design, hydrogen production in non-sterile conditions, and feasible techniques for separation or purification of hydrogen are beneficial to practical application. It is important to take the application requirement into consideration, when we are busy in studying biological technologies to improve the hydrogen yield. Advances in optimized processes and technologies would bring us closer to industrially viable biohydrogen production from waste biomass. A comprehensive consideration on industrial feasibility and laboratory investigation would accelerate the large scale production of biohydrogen.
Citation:Â Zhu, M.-J., and Li, H.-N. (2016). Biohydrogen Production from Waste Biomass. Trends in Renewable Energy, 2(2), 54-55. DOI: 10.17737/tre.2016.2.2.0021
More information about the Future Energy Service and Publishing
2016-04-05 00:00:00
Editorial
application/pdf
http://futureenergysp.com/index.php/tre/article/view/21
Trends in Renewable Energy; Vol 2, No 2 (2016)
eng
Copyright (c) 2016 Ming-Jun Zhu and Huan-Na Lin
oai:ojs.futureenergysp.com:article/56
2018-05-13T02:53:03Z
tre:RIEECS2017
driver
nmb a2200000Iu 4500
"180501 2018 eng "
2376-2144
2376-2136
dc
Low Cost Device for Charging Mobile Phone using Another Smartphone
Gupta, Vaibhav
Graphic Era University
Aggarwal, Vaibhav
Graphic Era University
Sharma, Kiran
Graphic Era University
Sharma, Neetu
Graphic Era University
Mobile to mobile; Charging; On the Go (OTG); Low cost; Cable; Overcharging; Safe
Mobile has been and will always remain one of the best companions for any human being. Mobile phones are considered as the live example of the advancement in technology on a daily basis. This era is marked by our complete dependence on this technology. The growing technology has introduced mobile phone, which plays an important role in communication. Since mobile phones have been made to be with the user all day and to carry out all the basis and high-performance task as per the demand of the user, the batteries need to be charged multiple times during a day. This imposes a burden on the user to carry a power bank while travelling; at times it becomes difficult if the power bank battery also drains out. This paper presents a small technique which may reduce this problem. The major components of the design are a capacitor of 2200 μF at 5.63 V and LED 1.5 V. The experimental data shows that the charging level of a mobile battery of 2100 mAh can be enhanced from 10-19 % in 35 minutes by consuming only 10% of the total energy of the other smart phone of battery 4000 mAh. Another experimental data shows that the charging level of a mobile battery of 2000 mAh can be enhanced from 14-37 % in 60 minutes by consuming only 20% of the total energy of the other smart phone of battery 4000 mAh. This low cost and simple designed USB On-the-Go (OTG) extension can now replace the necessity of carrying a power bank while travelling, which is expensive as compared to the above proposed technique as well.
Citation:Â Gupta, V., Aggarwal, V., Sharma, K., and Sharma, N. (2018). Low Cost Device for Charging Mobile Phone using Another Smartphone. Trends in Renewable Energy, 4, 77-82. DOI: 10.17737/tre.2018.4.3.0056
More information about the Future Energy Service and Publishing
2018-04-22 00:00:00
application/pdf
http://futureenergysp.com/index.php/tre/article/view/56
Trends in Renewable Energy; Vol 4 (2018): Special Issue on International Conference on Recent Innovations in Electrical, Electronics and Communication Systems (RIEECS 2017)
eng
Copyright (c) 2018 Vaibhav Aggarwal, Vaibhav Gupta, Kiran Sharma, and Neetu Sharma
oai:ojs.futureenergysp.com:article/115
2020-05-25T02:45:29Z
tre:ART
driver
nmb a2200000Iu 4500
"200428 2020 eng "
2376-2144
2376-2136
dc
Mathematical Analysis of Solar Photovoltaic Array Configurations with Partial Shaded Modules
BALARAJU, V
SV University, Tirupati, Andhrapradesh,India https://orcid.org/0000-0001-6141-1901?lang=en
Chengaiah, Ch.
Photovoltaic cell; Module; Array; Configurations; Shaded modules; Row currents; PV array power
Solar-based photovoltaic (SPV) cells produce power from sunlight through the photovoltaic effect. The yield voltage of a single PV cell is small, so the voltage is extended by interfacing PV cells in series arrangement known as PV module or panel. Solar PV array comprises of series and parallel connections of modules in the grid structure with a few columns and rows. The various kinds of SPV array configurations or topologies are shaped by changing the number of electrical connections between module to module in an array. This paper presents the mathematical examination of 6×6 size regular SPV array configurations, including Total-Cross-Tied, Parallel, Honey-Comb, Series-Parallel, Series, Bridge-Linked types beneath un-shading case, and different proposed shading cases (primarily short narrow, short wide, long narrow, and long wide shadings). The electrical proportionate circuit of the SPV array setups was analyzed by Kirchhoff’s laws at distinctive nodes and loops in a sun powered PV array. The location of global maximum power point (GMPP) was determined hypothetically and distinguished in Matlab/simulation software at various shading conditions.
Citation:Â Raju, V.B., and Chengaiah, C. (2020). Mathematical Analysis of Solar Photovoltaic Array Configurations with Partial Shaded Modules. Trends in Renewable Energy, 6, 121-143. DOI: 10.17737/tre.2020.6.2.00115
More information about the Future Energy Service and Publishing
2020-04-07 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/115
Trends in Renewable Energy; Vol 6, No 2 (2020)
eng
Copyright (c) 2020 V. Bala Raju, Dr. Ch. Chengaiah
oai:ojs.futureenergysp.com:article/159
2023-10-26T00:45:09Z
tre:ART
driver
nmb a2200000Iu 4500
"230602 2023 eng "
2376-2144
2376-2136
dc
Optimized Lightweight Frame for Intelligent New-energy Vehicles
Wu, Peipei
Intelligent new-energy vehicle, Vehicle frame; Finite element analysis; Lightweight; Optimization
In this paper, a joint optimization method based on multi-objective response surface approximation model and finite element simulation program is proposed to realize the lightweight optimization of new-energy vehicle frames. Under the premise of satisfying the constraints of strength, frequency and vibration, the thickness of different important parts is optimized to achieve the goal of minimizing the quality of intelligent vehicles. In order to obtain the stress distribution of each part and the vibration frequency of the frame, various finite element analyses of the intelligent vehicle frame are analyzed. In order to achieve optimization, this paper adopts the response surface method for multi-objective optimization. Sample data was generated by the central composite design, and the response surface optimization method was used to filter out 5 design variables that had a large impact on the frame. As a result, the weight of the frame was reduced from 25.05 kg to 19.86 kg, a weight reduction of 20.7%, achieving a significant weight reduction effect. This method provides important reference value and guiding significance for the optimization of frame and its lightweight. In this way, the design of the frame can be better optimized to make it lighter, thereby improving the performance of the smart car. At the same time, this method can also be applied to optimization problems in other fields to achieve more efficient and accurate optimization goals.
Citation: Wu, P. (2023). Optimized Lightweight Frame for Intelligent New-energy Vehicles. Trends in Renewable Energy, 9(2), 157-166. doi:http://dx.doi.org/10.17737/tre.2023.9.2.00159
More information about the Future Energy Service and Publishing
2023-12-01 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/159
Trends in Renewable Energy; Vol 9, No 2 (2023)
eng
Copyright (c) 2023 Peipei Wu
oai:ojs.futureenergysp.com:article/39
2017-11-14T19:25:31Z
tre:ART
driver
nmb a2200000Iu 4500
"171010 2017 eng "
2376-2144
2376-2136
dc
Bioelectricity Generation using Carbon Felt Electrode in Microbial Fuel Cell (MFC) Inoculated with Mixed Cultures
Pramanik, Shishir Kanti
Department of Chemistry, School of Physical Sciences, Shahjalal University of Science and Technology, Sylhet-3114, Bangladesh
Rana, Md Mohosin
Department of Genetic Engineering and Biotechnology, School of Life Sciences, Shahjalal University of Science and Technology, Sylhet-3114, Bangladesh
MFC; Bioelectricity; Carbon felt; Mixed culture microorganisms; Power density
Microbial fuel cell (MFC) that was configured with the carbon felt electrode and the cation exchange membrane, and inoculated with mixed culture was demonstrated to yield bioelectricity. The cell was operated under four external loads with pHs ranging from 4 to 10 and the total cell operation was monitored up to 25 days. The presented results revealed that the potentiality of maximum current and power production was achieved while hexacyanoferrate(III) used as a cathodic reaction and at neutral pH condition of media. The maximum current density 2.5 Am-2 and power density 1410 mWm-2 were observed on the 25th day at an anode potential of -378 mV. Stable and steady power was produced by MFC on the day 22nd to 25th when cell operated at 250 Ω external load. The internal resistance of the fuel cell was decreased with the increase of the operation time. Coulombic efficiency (CE %) was found 22.70 % at the stable phase of fuel cell operation.
Citation:Â Pramanik, S. K., and Rana, M. M. (2017). Bioelectricity Generation using Carbon Felt Electrode in Microbial Fuel Cell (MFC) Inoculated with Mixed Cultures. Trends in Renewable Energy, 3, 129-140. DOI: 10.17737/tre.2017.3.2.0039
More information about the Future Energy Service and Publishing
2017-11-15 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/39
Trends in Renewable Energy; Vol 3, No 2 (2017)
eng
Copyright (c) 2017 Shishir Kanti Pramanik and Md. Mohosin Rana
oai:ojs.futureenergysp.com:article/86
2019-01-02T01:22:23Z
tre:ART
driver
nmb a2200000Iu 4500
"181224 2018 eng "
2376-2144
2376-2136
dc
Theoretical Design of Energy Generating Gymnasium Pull-down Machine for Green, Renewable and Sustainable Energy Production
Saeed, Musharraf
University of Sargodha, Pakistan
Saleem, Ifrah
University of Lahore
Iqbal, Farhat
University of Sargodha, Pakistan
EGGS; EGGM; Gymnasium; Renewable energy; Cable and pulley; Pull-down machine; Micro grid
New technologies are being invented and energy demand is increasing. Growth of population has always been and will remain one of the major causes of energy demand. Science is therefore looking for new major and minor energy resources to keep world in progress. The main focus of energy engineering and technology in the field of energy generation is to harvest energy by any mean from any source. A theoretical research is introduced in this paper which will contribute its reasonable share in the field of renewable and green energy sector. This energy generating system is named as energy generating gymnasium system (EGGS). The core idea behind this energy harvesting system is that, the human being is also a source of renewable energy and it is possible to harness electrical energy from people by the use of EGGS. Human energy is wasted when excessive calories of body are burnt during exercise in gymnasiums to achieve the desired fitness. EGGS will provide an opportunity to return expended energy in the form of electrical energy from gymnasium equipment and cardiovascular machines. This electrical energy will be cheap and also green since it will not emit any carbon dioxide (CO2) gas during the process. This system can increase the potential of renewable energy area and the electrical energy generated from EGGS can be sold back to the national utility via micro grids (MG). The proposed system will be very beneficial for such countries that are facing energy crises as well as the third world countries. Authors have discussed a gymnasium machine named as “Pull-down machine†and proposed a theoretical modification to make it as an energy generating gymnasium machine (EGGM) in the presented research.
Citation:Â Saeed, M., Saleem, I., and Iqbal, F. (2019). Theoretical Design of Energy Generating Gymnasium Pull-down Machine for Green, Renewable and Sustainable Energy Production. Trends in Renewable Energy, 5, 47-59. DOI: 10.17737/tre.2019.5.1.0086
Â
More information about the Future Energy Service and Publishing
2018-01-01 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/86
Trends in Renewable Energy; Vol 5, No 1 (2019)
eng
Copyright (c) 2019 Musharraf Saeed, Ifrah Saleem, Farhat Iqbal
oai:ojs.futureenergysp.com:article/132
2021-11-04T18:25:38Z
tre:ART
driver
nmb a2200000Iu 4500
"211028 2021 eng "
2376-2144
2376-2136
dc
World on the Road to 100% Renewable Energy
Norouzi, Nima
Department of energy engineering and physics, Amirkabir university of technology (Tehran polytechnic), 424 Hafez Avenue, PO Box 15875-4413, Tehran, Iran, https://orcid.org/0000-0002-2546-4288
Fani, Maryam
Department of energy engineering and physics, Amirkabir university of technology (Tehran polytechnic), 424 Hafez Avenue, PO Box 15875-4413, Tehran, Iran,
100% Renewable Energy; Alternative Energy Sources; Fossil Fuel; Energy policy; sustainable economics
In the study, the current and future status of renewable energy resources were compiled in the light of large databases of national and international renewable energy institutions, and the latest situation in the world in the transition to 100% renewable energy was examined. The extent of the goal for the transition to 100% renewable energy has been determined, and predictions have been made based on all this information. In today’s world where energy and environmental problems are on the agenda, countries’ transition to renewable energy is the primary solution. This goal is called the transition to 100% renewable energy, which brings advantages such as providing needed energy and producing clean energy. Today, renewable energy sources account for more than one-third of the global energy capacity, and the world is rapidly moving towards 100% renewable energy. Compared with 2017, the total amount of renewable energy in 2018 increased by 181 GW, and the number of countries with an increase in the proportion of renewable energy increased. Taking into account the external dependence of the use of fossil fuels and environmental issues, this development is at a promising level in the future. In order to shift from highly polluting oil resources to natural gas and renewable resources, this article aims to investigate the current global energy transition trends, and then propose some important strategies to get closer to upstream goals and obligations in this way.
Citation: Norouzi, N., and Fani, M. (2021). World on the Road to 100% Renewable Energy. Trends in Renewable Energy, 7, 114-126. DOI: 10.17737/tre.2021.7.1.00132
More information about the Future Energy Service and Publishing
2021-12-31 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/132
Trends in Renewable Energy; Vol 7 (2021)
eng
Copyright (c) 2021 Nima Norouzi, Maryam Fani
oai:ojs.futureenergysp.com:article/15
2017-01-20T22:39:48Z
tre:ED
driver
nmb a2200000Iu 4500
"150910 2015 eng "
2376-2144
2376-2136
dc
Recent Development of Bioenergy and Biorefinery in China
Xian, Mo
Prof., Assistant Director, Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences http://sourcedb.cas.cn/sourcedb_qibebt_cas/yw/zjrc/200906/t20090605_494996.html
Bioenergy; Biorefinery; China; Development; Bioheat; Bioelectricity; Bio-jet fuel; Bio-ethanol; Future Trends
Although energy was used throughout the history of human culture, the burst of energy production and consumption coincided with the beginnings of the Industrial Revolution. The transition from hand production methods to machines, the increasing exploration and use of fossil-derived fuels (coal, petroleum, natural gas, shale fuel) made it possible to production of energy in large quantities. The majority of global energy supply still relies on traditional fossil based energy, with abundant fossil feedstock, well-understood technologies, and significant advantages in economy and scale. However, the traditional energy industry is now being challenged by sustainability of feedstock supply and environmental pressures, especially for carbon emission issues. Reduce the use of fossil fuels and replace them by renewable energies has been widely accepted by scientists, businesses and governors. Up to date, alternative renewable energy can be industrially produced via an extensive range of processes and sources like solar, wind, hydro, nuclear and bioenergy. According to the data of World Bioenergy Association (www. worldbioenergy.org), bioenergy has now been the largest global renewable energy supply which only below the traditional fossil energy.
China has abundant biomass resources to about 0.4 billion tons per year - if totally utilized the bioenergy can satisfy 10% of total energy consumption in China. However, the current utilization of bioenergy in China is of low efficiency: with immature technologies, in small production scales and hard to satisfy the market demands. For example, in global level, the final energy from biomass is bioheat, followed by transport fuels (mainly as corn/cellulose ethanol, biodiesel) and electricity. While in China, bioelectricity is the main form of bioenergy, large quantities of biomass are not efficiently utilized. Straw burning can be widely seen in agriculture area at harvesting season, which not only waste the valuable bioresources but also cause severe air pollution.
Currently, national projects are prompted in research and pilot level to improve the quantity and quality of Chinese bioenergy framework. Integrated production process for both bioheat and electricity was developed in recent years which aimed to improve the conversion efficiency of bioenergy. Super biogas projects are prompted in many regions where has abundant biomass resources. Second generation bio-ethanol is in pilot scale production, which utilizes the non-food agriculture waste like the corncobs. Moreover, biorefinery and bioconversion of the biomass to value added products are in early stages of development. Exploration of advanced bio-fuels and value-added chemical building blocks using modern techniques are future trends in the business of bioenergy and biorefinery. A variety of bio-, chemo- processes may be integrated in convertion of the biomass to the complex products. For example, Sinopec, one of the Chinese leading chemical companies, has explored 1st generation of bio-jet fuel, which is made from waste cooking oil via a variety of chemical processing techniques. Similar projects are in fast developing by industries as well as the research institutes.
It is hard to answer what is the future of bioenergy and biorefinery in China. As nobody in the last century can predict the scale and the diversity of the relative business of bioenergy in nowadays. But this industry will have a promising future: a seemingly infinite and renewable bio- resources in our lands, huge members of industries, governments and research institutes are eager to contribute their endeavors in this fast developing field, and more discoveries and modern techniques will be unfolded in the near future. We will walk a long way to fill in the gap between pioneering projects and conceptions and the practical scale-up application in this field.
Citation:Â Xian, M. (2015). Recent Development of Bioenergy and Biorefinery in China. Trends in Renewable Energy, 1(3), 129-130. DOI: 10.17737/tre.2015.1.3.0015
More information about the Future Energy Service and Publishing
2015-09-10 00:00:00
Editorial
application/pdf
http://futureenergysp.com/index.php/tre/article/view/15
Trends in Renewable Energy; Vol 1, No 3 (2015)
eng
Copyright (c) 2015 Mo Xian
oai:ojs.futureenergysp.com:article/46
2018-05-13T02:53:03Z
tre:RIEECS2017
driver
nmb a2200000Iu 4500
"180423 2018 eng "
2376-2144
2376-2136
dc
Comparison of MPPT Systems in Error Optimization using PID, Fuzzy and Hybrid Fuzzy in Multivariable Environment
Sharma, Chandani
Graphic Era University http://orcid.org/0000-0002-8752-7862
Jain, Anamika
PV; MPPT; Hybrid fuzzy; PID and Fuzzy; Global MPP; Academic performance indices
Recent surveys conducted in the field of Power Control and Engineering show that photovoltaic (PV) systems are currently being discussed worldwide and research on the same is being carried globally. It is necessary to optimize the expanding use of photovoltaic systems through error detection in Maximum Power Point Tracking (MPPT) systems. Through this paper, an attempt is made to develop an efficient photovoltaic MPPT system using hybrid fuzzy technique to extract maximum power under a multivariable environment (changing temperature and irradiance). The MPPT system using Hybrid Controller (combining PID & FLC) has an increased efficiency and optimized output in comparison to the MPPT system using PID and Fuzzy individually. The system has explored a concept of computing academic performance indices with three MPPT models for future research based on global MPP calculation.Â
Citation:Â Sharma, C., and Jain, A. (2018). Comparison of MPPT Systems in Error Optimization using PID, Fuzzy and Hybrid Fuzzy in Multivariable Environment. Trends in Renewable Energy, 4, 8-21. DOI: 10.17737/tre.2018.4.3.0046
More information about the Future Energy Service and Publishing
2018-04-22 00:00:00
application/pdf
http://futureenergysp.com/index.php/tre/article/view/46
Trends in Renewable Energy; Vol 4 (2018): Special Issue on International Conference on Recent Innovations in Electrical, Electronics and Communication Systems (RIEECS 2017)
eng
Copyright (c) 2018 Chandani Sharma and Anamika Jain
oai:ojs.futureenergysp.com:article/108
2020-03-28T04:02:39Z
tre:ART
driver
nmb a2200000Iu 4500
"200102 2020 eng "
2376-2144
2376-2136
dc
Double Carbon Coated LiCoPO4 Nano Composite as High-Performance Cathode for Lithium Ion Batteries
Yu, Yong
Zhao, Huifang
Chen, Yao
Feng, Zeng-kai
Foshan Branch, Beijing Landmark Engineering Co., Ltd., Foshan, Guangdong
Liu, Xiaomin
Prof., College of Materials Science and Engineering, Nanjing Tech University
Yang, Hui
Prof., College of Materials Science and Engineering, Nanjing Tech University
Double carbon coated LiCoPO4 nano composite; High-performance cathode; Lithium ion battery
Polyacene(PAS)/carbon and acetylene black(AB)/carbon coated lithium cobalt phosphate composites were synthesized via the solid state reaction method using co-precipitated Co3(PO4)2·8H2O and Li3PO4 mixture as its precursor. X-ray powder diffraction (XRD) was performed to investigate the structure and phase of all the samples. The transmission electron microscopy (TEM) shows that the double carbon layers coated on the surface of LiCoPO4 successfully. The LiCoPO4/C, LiCoPO4/PAS and LiCoPO4/AB delivered a capacity of T 120.92, 121.07 and 138.06 mAh×g-1 at 0.1C, respectively. The double carbon coated LiCoPO4 electrode delivered an initial discharge capacity of 147.12, 143.51 mAh×g-1 after AB/glucose, PAS/glucose coating, which maintained at 59.5% and 61.7% after 15 cycles at the 0.1C rate, respectively.
Citiation:Â Yu, Y., Zhao, H., Chen, Y., Feng, Z.-k., Liu, X., and Yang, H. (2020). Double Carbon Coated LiCoPO4 Nano Composite as High-Performance Cathode for Lithium Ion Batteries. Trends in Renewable Energy, 6, 1-11. DOI: 10.17737/tre.2020.6.1.00108
More information about the Future Energy Service and Publishing
2020-01-02 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/108
Trends in Renewable Energy; Vol 6, No 1 (2020)
eng
Copyright (c) 2020 Yong Yu, Huifang Zhao, Yao Chen, Zeng-kai Feng, Xiaomin Liu, Hui Yang
oai:ojs.futureenergysp.com:article/147
2023-03-21T02:38:19Z
tre:REV
driver
nmb a2200000Iu 4500
"221211 2022 eng "
2376-2144
2376-2136
dc
Current Status of Research on Methanol as an Alternative Fuel to Conventional Fuels
Lan, Dongchao
School of Mechanical Engineering/Institute of Vehicles and New Energy Technology, North China
University of Water Resources and Electric Power
Energy crisis; Environmental pollution; Methanol; Combustion characteristic
With the rapid development of China's economy and society, the domestic demand for automobiles is growing explosively. At the same time, the dependence of China's crude oil on foreign countries exceeds 65%. This is a great hidden danger to the sustainable development of China's economy and energy security. Automobile consumes a large amount of petroleum resources, and automobile exhaust is one of the main factors causing environmental pollution. In view of the dual pressure of energy saving and emission reduction, methanol has been favored by many researchers for its many advantages (such as cleanliness, environmental protection, renewable and high accessibility). In this paper, the resource extensibility of methanol, the physicochemical properties of methanol, the application characteristics of methanol in internal combustion engine and the comparison of the combustion performance of methanol with traditional fuels are summarized and analyzed.
Citation: Lan, D. (2022). Current status of research on methanol as an alternative fuel to gasoline. Trends in Renewable Energy, 9, 22-33. DOI: 10.17737/tre.2023.9.1.00147
More information about the Future Energy Service and Publishing
2023-03-20 00:00:00
Peer-reviewed article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/147
Trends in Renewable Energy; Vol 9, No 1 (2023)
eng
Copyright (c) 2023 Dongchao Lan
oai:ojs.futureenergysp.com:article/29
2017-02-07T04:01:52Z
tre:ART
driver
nmb a2200000Iu 4500
"170101 2017 eng "
2376-2144
2376-2136
dc
Power Systems Stability through Piecewise Monotonic Data Approximations – Part 1: Comparative Benchmarking of L1PMA, L2WPMA and L2CXCV in Overhead Medium-Voltage Broadband over Power Lines Networks
Lazaropoulos, Athanasios G.
http://orcid.org/0000-0002-1940-6989
Smart Grid; Intelligent Energy Systems; Broadband over Power Lines (BPL) networks; Power Line Communications (PLC); Faults; Fault Analysis; Fault Identification and Prediction; Power System Stability; Distribution Power Grids
This first paper assesses the performance of three well-known piecewise monotonic data approximations (i.e., L1PMA, L2WPMA, and L2CXCV) during the mitigation of measurement differences in the overhead medium-voltage broadband over power lines (OV MV BPL) transfer functions.
The contribution of this paper is triple. First, based on the inherent piecewise monotonicity of OV MV BPL transfer functions, L2WPMA and L2CXCV are outlined and applied during the determination of theoretical and measured OV MVBPL transfer functions. Second, L1PMA, L2WPMA, and L2CXCV are comparatively benchmarked by using the performance metrics of the percent error sum (PES) and fault PES. PES and fault PES assess the efficiency and accuracy of the three piecewise monotonic data approximations during the determination of transmission BPL transfer functions. Third, the performance of L1PMA, L2WPMA, and L2CXCV is assessed with respect to the nature of faults —i.e. faults that follow either continuous uniform distribution (CUD) or normal distribution (ND) of different magnitudes—.
The goal of this set of two papers is the establishment of a more effective identification and restoration of the measurement differences during the OV MV BPL coupling transfer function determination that may significantly help towards a more stable and self-healing power system.
Citation: Lazaropoulos, A. G. (2017). Power Systems Stability through Piecewise Monotonic Data Approximations – Part 1: Comparative Benchmarking of L1PMA, L2WPMA and L2CXCV in Overhead Medium-Voltage Broadband over Power Lines Networks. Trends in Renewable Energy, 3(1), 2-32. DOI: 10.17737/tre.2017.3.1.0029
More information about the Future Energy Service and Publishing
2017-01-01 07:29:05
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/29
Trends in Renewable Energy; Vol 3, No 1 (2017)
eng
Copyright (c) 2017 Athanasios G. Lazaropoulos
oai:ojs.futureenergysp.com:article/76
2018-10-05T21:19:46Z
tre:ART
driver
nmb a2200000Iu 4500
"180821 2018 eng "
2376-2144
2376-2136
dc
Smart Energy and Spectral Efficiency (SE) of Distribution Broadband over Power Lines (BPL) Networks – Part 1: The Impact of Measurement Differences on SE Metrics
Lazaropoulos, Athanasios G.
http://orcid.org/0000-0002-1940-6989
Smart Grid; Broadband over Power Lines (BPL); Power Line Communications (PLC); Distribution Power Grid; Spectral Efficiency
This paper assesses the impact of measurement differences on the spectral efficiency (SE) of distribution broadband over power lines (BPL) networks when CS2 module is applied. The broadband performance of distribution BPL networks is investigated in the 3-88 MHz frequency range when appropriate injected power spectral density limits
(IPSD limits) and uniform additive white Gaussian noise (AWGN) PSD levels from the BPL literature are assumed. The impact of measurement differences on SE of the distribution BPL networks is here assessed through appropriate SE metrics. These SE metrics assessing this impact are detailed in order to act as the benchmark metrics of the countermeasures techniques against measurement differences of the companion paper.
Citation: Lazaropoulos, A. G. (2018). Smart Energy and Spectral Efficiency (SE) of Distribution Broadband over Power Lines (BPL) Networks – Part 1: The Impact of Measurement Differences on SE Metrics. Trends in Renewable Energy, 4, 125-184. DOI: 10.17737/tre.2018.4.2.0076
More information about the Future Energy Service and Publishing
2018-10-05 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/76
Trends in Renewable Energy; Vol 4, No 2 (2018)
eng
Copyright (c) 2018 Athanasios G. Lazaropoulos
oai:ojs.futureenergysp.com:article/128
2021-11-04T18:25:38Z
tre:ART
driver
nmb a2200000Iu 4500
"210422 2021 eng "
2376-2144
2376-2136
dc
Enhance the Output Power of a Shaded Solar Photovoltaic Arrays with Shade Dispersion based TCT Configuration
Bala Raju, V
SV University, Tirupati, Andhrapradesh,India
Chengaiah, Ch
SV University, Tirupati, Andhrapradesh,India
PV Array; Modules; Configurations; Mismatch Losses; Power improvement; Shading Cases
Partial shading has a negative impact on the performance parameters of a Solar Photovoltaic (PV) array, because it shades certain panels while leaving others un-shaded. This article focuses on modeling, comparing and performance assessment of 6×6, 6×5 and 5×6 size shadowed solar PV arrays under different partial shading cases in the MATLAB/ Simulink software. For this purpose, the simulation of series-parallel (SP), Total-Cross-Tied (TCT) and proposed shade dispersion based TCT (SD-TCT) type of array configurations was carried out under few shading cases. The proposed SD-TCT was designed using the shades dispersion technique, which is based on a number logic approach. In this technique, in order to effectively remove the row-current mismatches in the TCT PV array configuration, the shaded and un-shaded modules in an array were re-arranged, so that the shading on modules expands across the whole array. The physical placement of the TCT array modules has been reordered in accordance with the proposed number logic pattern exclusive of altering the electrical links among the panels. The simulation results showed that the performance of the SD-TCT type was superior to that of conventional array configurations.
Citation: Bala Raju, V., and Chengaiah, C. (2021). Enhance the Output Power of a Shaded Solar Photovoltaic Arrays with Shade Dispersion based TCT Configuration. Trends in Renewable Energy, 7, 1-23. DOI: 10.17737/tre.2021.7.1.00128
More information about the Future Energy Service and Publishing
2021-12-31 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/128
Trends in Renewable Energy; Vol 7 (2021)
eng
Copyright (c) 2021 V Bala Raju, Ch Chengaiah
oai:ojs.futureenergysp.com:article/169
2024-03-09T01:48:30Z
tre:ART
driver
nmb a2200000Iu 4500
"240227 2024 eng "
2376-2144
2376-2136
dc
Assessment of Temporal Trend in Surface Air Temperatures across Some Selected Eco-Climatic Zones in Nigeria
KING, L.E.
Dept. of Physics, University of Calabar
Udo, S.O.
Ewona, I.O.
Amadi, S.O.
Ebong, E.D.
Umoh, M.D.
Trend; Temporal, Maximum temperature; Minimum temperature; Radiative forcing; Nigeria
Temporal trends in surface air temperatures across some selected eco-climatic zones in Nigeria from 1981 to 2018 were assessed using the Merra-2 reanalysis dataset. A total of 15 stations spread across the eco-climatic zones in Nigeria were used for this study. The Mann-Kendall (M-K) trend test was used to detect direction, significance, coefficients of time trends, while the linear regression and the Sen’s slope trend tests were used to estimate the trend magnitudes. The M-K trend test showed that the surface air maximum temperature of 14 stations had monotonic increasing trends, of which 13 stations were statistically significant at the 0.01 significance level, and 1 station was statistically significant at the 0.05 significance level. However, the M-K trend test also showed that surface air minimum temperature for all the 15 stations (representing 100%), showed monotonic upward trends, statistically significant at the 0.01 significance level. The Sen's slope and linear trend tests showed higher trend magnitudes at most stations, particularly stations in the Guinea-wooded, Sudan and Sahel savannas. The estimated mean trend magnitudes of maximum and minimum air surface temperatures increased by approximately 0.035°C/year and 0.036°C/year, respectively. The estimated mean air surface temperature increased by approximately 0.036°C/year and approximately 1.4°C for Nigeria over the 38-year period. The study then presents a linear trend projection of mean air surface temperature increase in Nigeria of approximately 4.3°C by 2100. This is 0.2°C below maximum levels and within the range of approximately 1.5 to 4.5°C that global air surface temperature is projected to rise by 2100 in the Intergovernmental Panel on Climate Change (IPCC) 2007 report. The M-K and linear trend tests were fully consistent with the standardized time series anomaly plots. Mean annual values of the air surface temperatures showed latitudinal dependence. The manifestation of significant long-term trends at high confidence levels in the air surface temperatures over the period, provides a clear evidence that the climate of Nigeria is witnessing a possible human-induced radiative forcing and a strong tendency for the occurrences of climate-related extreme events and their resulting adverse implications.
Citation: KING, L.E., Udo, S.O., Ewona, I.O., Amadi, S.O., Ebong, E.D., & Umoh, M.D. (2024). Assessment of Temporal Trend in Surface Air Temperatures across Some Selected Eco-Climatic Zones in Nigeria. Trends in Renewable Energy, 10, 132-158. doi:http://dx.doi.org/10.17737/tre.2024.10.1.00169
More information about the Future Energy Service and Publishing
2023-03-03 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/169
Trends in Renewable Energy; Vol 10, No 1 (2024)
eng
Copyright (c) 2024 L.E. King, S.O. Udo, I.O. Ewona, S.O. Amadi, E.D. Ebong, M.D. Umoh
oai:ojs.futureenergysp.com:article/9
2017-01-20T23:23:38Z
tre:REV
driver
nmb a2200000Iu 4500
"150315 2015 eng "
2376-2144
2376-2136
dc
A Review of Hydrothermal Carbonization of Carbohydrates for Carbon Spheres Preparation
Li, Rui
North Carolina A&T State University
Shahbazi, Abolghasem
North Carolina A&T State University
Hydrothermal Carbonization (HTC); Carbohydrates; Carbon Spheres; Glucose; Process Parameters; HTC Mechanism; Applications of Carbon Spheres; History of HTC; Processing Temperature; Residence Time; Precursor Concentration; pH; Pressure
Carbon spheres have attracted a great deal of attention due to their applications as super capacitors, catalyst supports, and adsorbents. Carbon spheres can be prepared with controlled size and with oxygenated functional groups on the surface by the hydrothermal carbonization. The further processed products have a high surface area and high thermal stability. Among various methods for fabrication of carbon spheres, the hydrothermal carbonization is favored because of its mild operating conditions. In addition, hydrothermal carbonization can synthesize micro or nano scale carbon spheres environmentally friendly without employing organic solvents, surfactants, or catalysts. In this review, we present the effects of process parameters, structural characteristics of carbon spheres, possible formation mechanisms of carbon spheres, and applications in catalysis.Â
Citation:Â Li, R. and Shahbazi, A. (2015). "A Review of Hydrothermal Carbonization of Carbohydrates for Carbon Spheres Preparation." Trends in Renewable Energy, 1(1), 43-56. DOI: 10.17737/tre.2015.1.1.009
More information about the Future Energy Service and Publishing
2015-03-15 00:00:00
Peer-reviewed article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/9
Trends in Renewable Energy; Vol 1, No 1 (2015)
eng
Copyright (c) 2015 Rui Li and Abolghasem Shahbazi
oai:ojs.futureenergysp.com:article/42
2017-11-22T16:23:31Z
tre:REV
driver
nmb a2200000Iu 4500
"171114 2017 eng "
2376-2144
2376-2136
dc
A review of regression models employed for predicting diffuse solar radiation in North-Western Africa
Ogbulezie, Julie C.
University of Calabar, Calabar, Nigeria
Ushie, Ogri James
University of Calabar, Calabar, Nigeria
Nwokolo, Samuel Chukwujindu
University of Calabar, Calabar, Nigeria
Diffuse solar radiation; Regression models; Classification; Functional forms; North-Western Africa
The knowledge of diffuse solar radiation (Hd) is of almost importance for determining the gross primary productivity, net ecosystem, exchange of carbon dioxide, light use efficiency and changing colour of the sky. However, routine measurement of Hd is not available in most locations in North-Western Africa. During the past 36 years in order to predict Hd in the horizontal surface on hourly, daily and monthly mean basis, several regression models have been developed for numerous locations in North-Western Africa. As a result, several input parameters have been utilized and different functional forms applied. The regression models so far utilized were classified into six main categories and presented based on the input parameters applied. The models were further reclassified into numerous main groups and finally represented according to their developing year. In general, 188 regression models, 33 functional forms and 20 groups were reported in literature for predicting Hd in North-Western Africa. The regression and soft computing models developed within North-Western Africa and across the globe were examined in order to determine the best technique of prediction. The result revealed that soft computing models are more suitable for predicting Hd in North-Western Africa and across the globe.Â
Citation: Ogbulezie, J., Ushie, O., and Nwokolo, S. (2017). A review of regression models employed for predicting diffuse solar radiation in North-Western Africa. Trends in Renewable Energy, 3(2), 160-206. DOI: 10.17737/tre.2017.3.2.0042
More information about the Future Energy Service and Publishing
2017-11-15 00:00:00
Peer-reviewed article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/42
Trends in Renewable Energy; Vol 3, No 2 (2017)
eng
Copyright (c) 2017 Julie C. Ogbulezie, Ogri James Ushie, Samuel Chukwujindu Nwokolo
oai:ojs.futureenergysp.com:article/97
2020-04-11T03:53:19Z
tre:ART
driver
nmb a2200000Iu 4500
"190714 2019 eng "
2376-2144
2376-2136
dc
Catalytic Pyrolysis of Kapok Fiber for Production of Olefins
Qiu, Qi
College of Chemistry and Environmental EngineeringShenzhen University
Cai, Yingen
Ye, Qiuling
Lv, Weizhong
Shenzhen University
Kapok fibers; GCMS; Pyrolysis; MCM-41; Zr-MCM-41; Olefin
Pyrolysis of kapok fibers over mesoporous molecular sieves of MCM-41, Zr-MCM-41 and Cr-MCM-41 (the mole ratio of Si:Zr or Si/Cr=50) was studied by using pyrolysis-gas chromatography-mass spectrometry (Py-GC/MS). Pure silicon MCM-41 showed weak acidity during pyrolysis with furfural as the main product. Zr-MCM-41 showed the dual-functionality of acid and base with both furfural and hydroxy acetone present in the products. Cr-MCM-41 was more acidic with more furfural produced. The optimal conditions for producing olefins were found to be 600°C and the ratio of kapok fiber to catalyst being 1:10 with the Zr-MCM-41 catalyst. The main products obtained via pyrolysis of kapok fiber were acetic acid, furfural, 2,4-di-tert-butylphenol, olefins, and alkanes. The excess of the catalyst and the high temperature of the reaction had certain effects on the pyrolysis of biomass to produce olefins, such as 1-decene, 1-dodecene, 1-undecene, 1-tridecene and heptadecane.Â
Citation:Â Qiu, Q., Cai, Y., Ye, Q., and Lv, W. (2019). Catalytic Pyrolysis of Kapok Fiber for Production of Olefins. Trends in Renewable Energy, 5, 218-228. DOI: 10.17737/tre.2019.5.2.0097
More information about the Future Energy Service and Publishing
2019-04-01 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/97
Trends in Renewable Energy; Vol 5, No 2 (2019)
eng
Copyright (c) 2019 Qi Qiu, Yingen Cai, Qiuling Ye, Weizhong Lv
oai:ojs.futureenergysp.com:article/141
2022-11-08T03:55:17Z
tre:REV
driver
nmb a2200000Iu 4500
"220328 2022 eng "
2376-2144
2376-2136
dc
A Review of Engine Emissions Testing Methods for Environmental Sustainability
Wang, Minghao
Emission characteristics; Detection methods; Air pollution; Idling method; Working condition method; On-board emission testing method
With the increase of vehicle ownership, vehicle emission pollution has become a major source of air pollution. The control of automobile pollutant emissions is one of the effective methods to reduce air pollution. Domestic and foreign exhaust pollutant testing methods for in-use vehicles have been gradually developed from the original idling method to the double-idling method and the simple working condition method. There are many methods to test the exhaust pollutants of in-use vehicles, but the test operation cycle, gas analysis principle, cost, application occasions and the accuracy level of various testing methods are different. This paper introduces the idling method, the working condition method and the on-board emission testing method for detecting vehicle emission pollutants. Two optimized methods for detecting automotive emission pollutants (namely the double-idle method and the simple transient working condition method) are also introduced.
Citation: Wang, M. (2022). A Review of Engine Emissions Testing Methods for Environmental Sustainability. Trends in Renewable Energy, 8(2), 96-106. DOI: 10.17737/tre.2022.8.2.00141
More information about the Future Energy Service and Publishing
2022-12-01 00:00:00
Peer-reviewed article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/141
Trends in Renewable Energy; Vol 8, No 2 (2022)
eng
Copyright (c) 2022 Minghao Wang
oai:ojs.futureenergysp.com:article/22
2017-01-20T20:07:19Z
tre:REV
driver
nmb a2200000Iu 4500
"160504 2016 eng "
2376-2144
2376-2136
dc
Standards and Protocols for Characterization of Algae-Based Biofuels
Yang, Changyan
Prof., School of Chemical Engineering & Pharmacy, Wuhan Institute of Technology
Zhang, Bo
Cui, Chang
Wu, Jinsheng
Ding, Yigang
Wu, Yuanxin
Algae-Based Biofuels; ASTM Standards; European Standards (EN); Drop-in Algal Biofuel; Algal Lipid Upgrading (ALU); Hydrothermal Liquefaction (HTL); Hydroprocessing; Cracking; Upgrading algal fuel
Recently, algae have been considered as the third-generation biofuel feedstock, which can be converted to the precursor chemicals of drop-in fuels via either the algal lipid upgrading (ALU) pathway or the hydrothermal liquefaction (HTL) pathway. These precursors could be further processed and upgraded to fuels. This article reviews the standards and protocols that are suitable for characterization of drop-in algal biofuels. Applicable ASTM standards and European standards (EN) were summarized. The protocols that have been used by researches and the National Institute of Standards and Technology were also introduced.
Citation:Â Yang, C., Zhang, B., Cui, C., Wu, J., Ding, Y., and Wu, Y. (2016). Standards and Protocols for Characterization of Algae-Based Biofuels. Trends in Renewable Energy, 2(2), 56-60. DOI: 10.17737/tre.2016.2.2.0022
More information about the Future Energy Service and Publishing
2016-04-05 00:00:00
Peer-reviewed article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/22
Trends in Renewable Energy; Vol 2, No 2 (2016)
eng
Copyright (c) 2016 Changyan Yang, etc.
oai:ojs.futureenergysp.com:article/61
2018-05-05T04:04:03Z
tre:REV
driver
nmb a2200000Iu 4500
"180503 2018 eng "
2376-2144
2376-2136
dc
Sustainable Management of Spent Hydroprocessing Catalyst
Yang, Changyan
Wu, Jinlong
Wang, Wei
Li, Bo
Zhang, Bo
Ph.D., P.E., Prof. of Chemical Engineering, Editor, Trends in Renewable Energy http://scholar.google.com/citations?user=JqmEEfkAAAAJ&hl=en
Ding, Yigang
Sustainable Management; Spent Hydroprocessing Catalyst; Oxidative Regeneration; Rejuvenation; Metals Reclamation
Increasing demand for high-quality transportation fuels and stringent environmental standards have resulted in the significantly increased quantity of spent hydroprocessing catalysts, which require the sustainable management. To minimize the generation of hazardous wastes, the spent hydroprocessing catalysts can be regenerated via oxidative regeneration or reactivated via the rejuvenation process. If the catalytic activity cannot be restored, it can be utilized as a source of other useful materials, and/or metals in the spent catalyst are recovered. Finally, the stabilized residues shall be disposed by using an environmentally sound method.Â
Citation:Â Yang, C., Wu, J., Wang, W., Li, B., Zhang, B., and Ding, Y. (2018). Sustainable Management of Spent Hydroprocessing Catalyst. Trends in Renewable Energy, 4(1), 90-95. DOI:10.17737/tre.2018.4.1.0061
More information about the Future Energy Service and Publishing
2017-11-24 00:00:00
Peer-reviewed article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/61
Trends in Renewable Energy; Vol 4, No 1 (2018)
eng
Copyright (c) 2018 Changyan Yang et al.
oai:ojs.futureenergysp.com:article/117
2020-05-25T02:45:29Z
tre:ART
driver
nmb a2200000Iu 4500
"200510 2020 eng "
2376-2144
2376-2136
dc
Business Analytics and IT in Smart Grid – Part 1: The Impact of Measurement Differences on the iSHM Class Map Footprints of Overhead Low-Voltage Broadband over Power Lines Topologies
Lazaropoulos, Athanasios G.
1: School of Electrical and Computer Engineering / National Technical University of Athens / 9 Iroon Polytechniou Street / Zografou, GR 15780
2: Department of Inductrial Design and Production Engineering / School of Engineering / University of West Attica / 250 Thivon & P. Ralli / Athens, GR 12244 http://orcid.org/0000-0002-1940-6989
Smart Grid; Broadband over Power Lines (BPL) networks; Power Line Communications (PLC); Distribution and Transmission Power Grids; Capacity; Statistics; Business Analytics; IT; Modeling
Due to the smart grid (SG) operation, the power utilities are dealing with a cataclysm of big data that demands advanced information technology (IT) infrastructure and business analytics while one cause of this growth is the nature of the power grid operation that demands real-time measurements. In [1], [2], the theoretical framework and the numerical results for the interoperability of Deterministic Hybrid Model (DHM), initial Statistical Hybrid Model (iSHM), the definition procedure and the class maps have been presented for the overhead low-voltage broadband over power lines (OV LV BPL) networks as well as the iSHM footprints. On the basis of the five real indicative OV LV BPL topologies of [1], [2], the impact of measurement differences that follow either continuous uniform distributions (CUDs) or normal distributions (NDs) of different intensities is first highlighted on iSHM footprints.
Citation: Lazaropoulos, A. G. (2020). Business Analytics and IT in Smart Grid – Part 1: The Impact of Measurement Differences on the iSHM Class Map Footprints of Overhead Low-Voltage Broadband over Power Lines Topologies. Trends in Renewable Energy, 6, 146-176. DOI: 10.17737/tre.2020.6.2.00117
More information about the Future Energy Service and Publishing
2020-04-07 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/117
Trends in Renewable Energy; Vol 6, No 2 (2020)
eng
Copyright (c) 2020 Athanasios G. Lazaropoulos
oai:ojs.futureenergysp.com:article/158
2023-10-26T00:45:09Z
tre:ART
driver
nmb a2200000Iu 4500
"230615 2023 eng "
2376-2144
2376-2136
dc
Temperature Forecasting as a Means of Mitigating Climate Change and Its Effects: A Case Study of Mali
Billy, Utibe Akpan
University of Calabar
Udo, Sunday O
Ewona, Igwe O
Umoh, Mfon D
Mfongang, Agbor
Trend Analysis; Forecast; Temperature; Mali; Mann-Kendall; Models
Temperature forecasts and trend analyzes were carried out for several locations in Mali as an important tool for warning of potentially threatening weather events such as severe heat waves, storms, droughts and floods, which could pose a great risk to humans and their environment. Five locations (Segou, Sikasso, Kayes, Gao and Taoudenni) across Mali (170 00’N – 40 00’W) were chosen for this research work. Satellite data of annual temperature obtained from the European Centre for Medium-Range Weather Forecast (ECMWF) database for 35 years (1985-2019) was used for this work. The Mann-Kendall trend test was carried out for various locations to observe and study the trend. Four Models including Auto Regressive and Integrated Moving Average (ARIMA), Exponential smoothening (ETS), TBATS (Trigonometric seasonality, Box-Cox transformation, ARMA errors, Trend and Seasonal components) and the linear model were employed to forecast average temperature for 10 years for all the locations. The model that produces the best forecast at the 95% confidence level is expected to have the lowest Root Mean Square Error (RMSE) value. The results showed that no significant trends were recorded at the considered locations. The linear model produced the best forecast for Segou, Kayes and Taoudenni, while the TBATS model produced the best forecast for Gao and the ARIMA model produced the best forecast for Sikasso.
Citation: Billy, U., Udo, S., Ewona, I., Umoh, M., & Mfongang, A. (2023). Temperature Forecasting as a Means of Mitigating Climate Change and Its Effects: A Case Study of Mali. Trends in Renewable Energy, 9(2), 167-179. doi:http://dx.doi.org/10.17737/tre.2023.9.2.00158
More information about the Future Energy Service and Publishing
2023-12-01 00:00:00
Peer-reviewed Article
application/pdf
http://futureenergysp.com/index.php/tre/article/view/158
Trends in Renewable Energy; Vol 9, No 2 (2023)
eng
Copyright (c) 2023 Utibe Akpan Billy, Sunday O Udo, Igwe O Ewona, Mfon D Umoh, Agbor Mfongang
oai:ojs.futureenergysp.com:article/40
2017-10-07T03:17:55Z
tre:ED
driver
nmb a2200000Iu 4500
"170927 2017 eng "
2376-2144
2376-2136
dc
Smart Grid is the Key to Enhance the Penetration of Renewable Energy into Electric Power Systems
Gupta, Neeraj
Indian Institute of Technology Roorkee
Smart Grid; Renewable Energy; Electric Power Systems;
Dear researchers,
Â
Due to the rapid development of renewable energy technologies because of environmental concerns, the electric power grid is experiencing a significant change. The electrical power structure is no longer a vertically integrated structure due to the large grid parity of renewables and as a result, smart grid is the key to enhance the penetration of renewable energy into electric power systems. However, due to the intermittent probabilistic nature of renewable energy sources, design and management of power are a great challenge to both power and computing industry. Furthermore, it has been anticipated that future energy structure will be “two-way streetsâ€, allowing every energy user to be not only a customer, but an energy provider as well. So, a smart grid structure is the need in the present scenario. This transition from classical power structure inevitably demands significant research for many rapidly rising issues.
This Special Issue focuses on smart grid that can accommodate renewable energy into electric utility systems. The Special Issue is interested but not limited to the following issues relevant to increased renewable energy penetration:
1) Prediction of sustainable energy resources.
2) Stability and control of sustainable energy in supporting grid frequency and voltage.
3) Steady-state and transient assessment of system, etc.
4) Extent to which dispatchable generation reserves required and under what circumstances.
5) Effect on reliability be compromised with increased sustainable energy penetration.
6) Cost considerations with renewable’s variability
7) Effect on system operating strategies with sustainable energy generation
8) Effect on various measuring devices for effective monitoring and evaluation of electric power system operation, etc.
Â
Dr. Neeraj Gupta
More information about the Future Energy Service and Publishing
2017-09-27 00:00:00
Editorial
application/pdf
http://futureenergysp.com/index.php/tre/article/view/40
Trends in Renewable Energy; Vol 3 (2017): SPECIAL ISSUE ON SMART GRID (2)
eng
Copyright (c) 2017 Neeraj Gupta
b323b555950724d4dc043cda3843ceaa