Pub Date : 2024-02-07DOI: 10.6000/1929-6002.2024.13.01
Edinson Zapata-Campo, Katherine Rico-Carrillo, Fernando Salazar-Arrieta, Edwin Paipa-Sanabria, Julian Zapata-Cortes
Electric mobility is a modality that has been implemented worldwide, however, the importance of the use of this type of environmentally friendly energy occupies a space at the top of this list that to provide solutions in this regard, the National Navy through the Corporation of science and technology for the development of the maritime and river naval industry (COTECMAR), As part of the project executor, Design of an Eco-friendly electric vessel (ECOTEA) for cargo transport on the Atrato River, Colombia, the research project was carried out, technological surveillance study to know the advances and state of development in electric river mobility for cargo transport as an applicable alternative in the Atrato River, in Colombia, as part of the Energy Transformation for Environmentally Friendly Eco Transport, carried out by institutions recognized by the Ministry of Science, Technology and Innovation, such as: the National University, Center for Research and Administrative Planning (CEIPA), Technological University of Chocó, University of Cartagena, the Institute of Environmental Research of Chocó and the Colombian Institute of Technical Standards and Certifications (ICONTEC), as co-executors of the project. The justification for this research project is based on the UN's Sustainable Development Goals, specifically number 7, which seeks to guarantee access to safe, sustainable and modern energy, as well as the commitments acquired by Colombia through the river master plan, which has as its main objective to obtain a more competitive river system. clean, safe and beneficial for national development, with the design and construction of an ecologically friendly vessel (ECOTEA), specifically on the Atrato River, benefiting an estimated population of 370 thousand people in the energy transition program. The development of the research was descriptive with a qualitative approach because it contributed to the planning of the roadmap to be drawn.
{"title":"Study of Technological Surveillance in Electric River Mobility for Cargo Transport on the Atrato River, Colombia","authors":"Edinson Zapata-Campo, Katherine Rico-Carrillo, Fernando Salazar-Arrieta, Edwin Paipa-Sanabria, Julian Zapata-Cortes","doi":"10.6000/1929-6002.2024.13.01","DOIUrl":"https://doi.org/10.6000/1929-6002.2024.13.01","url":null,"abstract":"Electric mobility is a modality that has been implemented worldwide, however, the importance of the use of this type of environmentally friendly energy occupies a space at the top of this list that to provide solutions in this regard, the National Navy through the Corporation of science and technology for the development of the maritime and river naval industry (COTECMAR), As part of the project executor, Design of an Eco-friendly electric vessel (ECOTEA) for cargo transport on the Atrato River, Colombia, the research project was carried out, technological surveillance study to know the advances and state of development in electric river mobility for cargo transport as an applicable alternative in the Atrato River, in Colombia, as part of the Energy Transformation for Environmentally Friendly Eco Transport, carried out by institutions recognized by the Ministry of Science, Technology and Innovation, such as: the National University, Center for Research and Administrative Planning (CEIPA), Technological University of Chocó, University of Cartagena, the Institute of Environmental Research of Chocó and the Colombian Institute of Technical Standards and Certifications (ICONTEC), as co-executors of the project. \u0000The justification for this research project is based on the UN's Sustainable Development Goals, specifically number 7, which seeks to guarantee access to safe, sustainable and modern energy, as well as the commitments acquired by Colombia through the river master plan, which has as its main objective to obtain a more competitive river system. clean, safe and beneficial for national development, with the design and construction of an ecologically friendly vessel (ECOTEA), specifically on the Atrato River, benefiting an estimated population of 370 thousand people in the energy transition program. The development of the research was descriptive with a qualitative approach because it contributed to the planning of the roadmap to be drawn.","PeriodicalId":394478,"journal":{"name":"Journal of Technology Innovations in Renewable Energy","volume":"37 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139797174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-02-07DOI: 10.6000/1929-6002.2024.13.01
Edinson Zapata-Campo, Katherine Rico-Carrillo, Fernando Salazar-Arrieta, Edwin Paipa-Sanabria, Julian Zapata-Cortes
Electric mobility is a modality that has been implemented worldwide, however, the importance of the use of this type of environmentally friendly energy occupies a space at the top of this list that to provide solutions in this regard, the National Navy through the Corporation of science and technology for the development of the maritime and river naval industry (COTECMAR), As part of the project executor, Design of an Eco-friendly electric vessel (ECOTEA) for cargo transport on the Atrato River, Colombia, the research project was carried out, technological surveillance study to know the advances and state of development in electric river mobility for cargo transport as an applicable alternative in the Atrato River, in Colombia, as part of the Energy Transformation for Environmentally Friendly Eco Transport, carried out by institutions recognized by the Ministry of Science, Technology and Innovation, such as: the National University, Center for Research and Administrative Planning (CEIPA), Technological University of Chocó, University of Cartagena, the Institute of Environmental Research of Chocó and the Colombian Institute of Technical Standards and Certifications (ICONTEC), as co-executors of the project. The justification for this research project is based on the UN's Sustainable Development Goals, specifically number 7, which seeks to guarantee access to safe, sustainable and modern energy, as well as the commitments acquired by Colombia through the river master plan, which has as its main objective to obtain a more competitive river system. clean, safe and beneficial for national development, with the design and construction of an ecologically friendly vessel (ECOTEA), specifically on the Atrato River, benefiting an estimated population of 370 thousand people in the energy transition program. The development of the research was descriptive with a qualitative approach because it contributed to the planning of the roadmap to be drawn.
{"title":"Study of Technological Surveillance in Electric River Mobility for Cargo Transport on the Atrato River, Colombia","authors":"Edinson Zapata-Campo, Katherine Rico-Carrillo, Fernando Salazar-Arrieta, Edwin Paipa-Sanabria, Julian Zapata-Cortes","doi":"10.6000/1929-6002.2024.13.01","DOIUrl":"https://doi.org/10.6000/1929-6002.2024.13.01","url":null,"abstract":"Electric mobility is a modality that has been implemented worldwide, however, the importance of the use of this type of environmentally friendly energy occupies a space at the top of this list that to provide solutions in this regard, the National Navy through the Corporation of science and technology for the development of the maritime and river naval industry (COTECMAR), As part of the project executor, Design of an Eco-friendly electric vessel (ECOTEA) for cargo transport on the Atrato River, Colombia, the research project was carried out, technological surveillance study to know the advances and state of development in electric river mobility for cargo transport as an applicable alternative in the Atrato River, in Colombia, as part of the Energy Transformation for Environmentally Friendly Eco Transport, carried out by institutions recognized by the Ministry of Science, Technology and Innovation, such as: the National University, Center for Research and Administrative Planning (CEIPA), Technological University of Chocó, University of Cartagena, the Institute of Environmental Research of Chocó and the Colombian Institute of Technical Standards and Certifications (ICONTEC), as co-executors of the project. \u0000The justification for this research project is based on the UN's Sustainable Development Goals, specifically number 7, which seeks to guarantee access to safe, sustainable and modern energy, as well as the commitments acquired by Colombia through the river master plan, which has as its main objective to obtain a more competitive river system. clean, safe and beneficial for national development, with the design and construction of an ecologically friendly vessel (ECOTEA), specifically on the Atrato River, benefiting an estimated population of 370 thousand people in the energy transition program. The development of the research was descriptive with a qualitative approach because it contributed to the planning of the roadmap to be drawn.","PeriodicalId":394478,"journal":{"name":"Journal of Technology Innovations in Renewable Energy","volume":"15 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139857006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-08DOI: 10.6000/1929-6002.2023.12.01
Chao-chen Chung, Wang Kaiqiang, Zhong Yujia
The development of energy professionals played important roles for energy innovation and sustainability transitions in Guangdong- Hong Kong- Macao Greater Bay Area. We selected three representative universities, i.e. Sun Yat-sen University, the Chinese University of Hong Kong, and the University of Macao in Guangdong, Hong Kong and Macao as the examples which presented current status of higher education in the fields of renewable energies. We compared these renewable energy related curriculums in terms of quantities, structures and contents. The results showed that the renewable energy related curriculums in the three universities should expand at postgraduate levels, strengthen their linkages with industries and increase interdisciplinary courses in order to optimize professional training in the Greater Bay Area.
{"title":"A Comparative Study on the Renewable Energy Related Curriculums in the Universities in Guangdong- Hong Kong- Macao Greater Bay Area","authors":"Chao-chen Chung, Wang Kaiqiang, Zhong Yujia","doi":"10.6000/1929-6002.2023.12.01","DOIUrl":"https://doi.org/10.6000/1929-6002.2023.12.01","url":null,"abstract":"The development of energy professionals played important roles for energy innovation and sustainability transitions in Guangdong- Hong Kong- Macao Greater Bay Area. We selected three representative universities, i.e. Sun Yat-sen University, the Chinese University of Hong Kong, and the University of Macao in Guangdong, Hong Kong and Macao as the examples which presented current status of higher education in the fields of renewable energies. We compared these renewable energy related curriculums in terms of quantities, structures and contents. The results showed that the renewable energy related curriculums in the three universities should expand at postgraduate levels, strengthen their linkages with industries and increase interdisciplinary courses in order to optimize professional training in the Greater Bay Area.","PeriodicalId":394478,"journal":{"name":"Journal of Technology Innovations in Renewable Energy","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117239219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-03-03DOI: 10.6000/1929-6002.2021.10.01
S. S. Howard
This study is intended to present a numerical model that was established after the energy conservation equations coupled with the heat transfer equations to predict the discharge behavior of different phase change materials, paraffin under the effect of different operating conditions such as solar radiation, heat transfer fluid, using nanofluids; AI2O3, CuO, Fe304 and SiO2, at different concentrations, and heat transfer fluid temperatures. Besides, the effect of the aforementioned operating conditions on the thermal storage process using PV-Thermal hybrid system and the thermal energy conversion efficiency is presented and discussed. It has been observed in this study that the nanofluid AI2O3 has the longest discharge duration elapse compared to other nanofluids and water as base heat transfer fluid. The nanofluid Ai2O3 as heat transfer fluid exhibited the longest time compared to other nanofluids and water as base heat transfer fluid. It was also shown that the higher the nanofluid volumetric concentrations, the longer the discharge process duration elapses. The data showed that nanofluid Al2O3 has the highest discharge time at different concentrations compared to the other nanofluids during the three regions solid, mushy, and liquid. The results clearly showed that by adding 5 % Fe304 nanoparticles, the melting time of paraffin could be saved by 16.5% over the water. It is also evident that the higher the heat transfer fluid temperature, the higher the hybrid system efficiency, and nanofluids CuO and SiO2 have the highest hybrid system efficiency compared to other nanofluids and water as heat transfer fluid. Finally, a good agreement has been obtained between the model and experimental data published in the literature.
{"title":"Numerical Modeling Prediction of Thermal Storage during Discharging Phase, PV- Thermal Solar and with Nanofluids","authors":"S. S. Howard","doi":"10.6000/1929-6002.2021.10.01","DOIUrl":"https://doi.org/10.6000/1929-6002.2021.10.01","url":null,"abstract":"This study is intended to present a numerical model that was established after the energy conservation equations coupled with the heat transfer equations to predict the discharge behavior of different phase change materials, paraffin under the effect of different operating conditions such as solar radiation, heat transfer fluid, using nanofluids; AI2O3, CuO, Fe304 and SiO2, at different concentrations, and heat transfer fluid temperatures. Besides, the effect of the aforementioned operating conditions on the thermal storage process using PV-Thermal hybrid system and the thermal energy conversion efficiency is presented and discussed. It has been observed in this study that the nanofluid AI2O3 has the longest discharge duration elapse compared to other nanofluids and water as base heat transfer fluid. The nanofluid Ai2O3 as heat transfer fluid exhibited the longest time compared to other nanofluids and water as base heat transfer fluid. It was also shown that the higher the nanofluid volumetric concentrations, the longer the discharge process duration elapses. The data showed that nanofluid Al2O3 has the highest discharge time at different concentrations compared to the other nanofluids during the three regions solid, mushy, and liquid. The results clearly showed that by adding 5 % Fe304 nanoparticles, the melting time of paraffin could be saved by 16.5% over the water. It is also evident that the higher the heat transfer fluid temperature, the higher the hybrid system efficiency, and nanofluids CuO and SiO2 have the highest hybrid system efficiency compared to other nanofluids and water as heat transfer fluid. Finally, a good agreement has been obtained between the model and experimental data published in the literature.","PeriodicalId":394478,"journal":{"name":"Journal of Technology Innovations in Renewable Energy","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132321080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-30DOI: 10.6000/1929-6002.2020.09.01
N. Touafek, C. Dridi, R. Mahamdi
To boosting the performance of inverted p-i-n-type planar hetero-junction architecture photovoltaic cells based on CH3NH3PbI3 perovskite materials, a thin buffer layer Bathocuproine (BCP) is introduced between the Electron Transporting Layer (ETL) PCBM and the metal contact. The trends in parameters Perovskite Solar Cells (PSCs) inserting BCP is studied using solar cell capacitance simulator (SCAPS-1D). The obtained results of optimizing the thickness of the Bathocuproine (BCP) buffer layer exhibited optimum value at 5 nm, with power conversion efficiency (PCE) of 17.30 %, VOC of 1.39 V, and FF of 62.89 %. The carrier concentration was higher than 1017 cm-3 increases sharply the conversion efficiency by about 0.35-2.3 %. Further, the lower metal work function (Фm<4.3 eV) enhances the electrical parameters where the efficiency up to 21.3 %. Keywords: Solar cell, Perovskite, CH3NH3PbI3, BCP, SCAPS, Metal Work Function.
{"title":"Bathocuproine Buffer Layer Effect on the Performance of Inverted Perovskite Solar Cells","authors":"N. Touafek, C. Dridi, R. Mahamdi","doi":"10.6000/1929-6002.2020.09.01","DOIUrl":"https://doi.org/10.6000/1929-6002.2020.09.01","url":null,"abstract":"To boosting the performance of inverted p-i-n-type planar hetero-junction architecture photovoltaic cells based on CH3NH3PbI3 perovskite materials, a thin buffer layer Bathocuproine (BCP) is introduced between the Electron Transporting Layer (ETL) PCBM and the metal contact. The trends in parameters Perovskite Solar Cells (PSCs) inserting BCP is studied using solar cell capacitance simulator (SCAPS-1D). The obtained results of optimizing the thickness of the Bathocuproine (BCP) buffer layer exhibited optimum value at 5 nm, with power conversion efficiency (PCE) of 17.30 %, VOC of 1.39 V, and FF of 62.89 %. The carrier concentration was higher than 1017 cm-3 increases sharply the conversion efficiency by about 0.35-2.3 %. Further, the lower metal work function (Фm<4.3 eV) enhances the electrical parameters where the efficiency up to 21.3 %. \u0000Keywords: Solar cell, Perovskite, CH3NH3PbI3, BCP, SCAPS, Metal Work Function.","PeriodicalId":394478,"journal":{"name":"Journal of Technology Innovations in Renewable Energy","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132068634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-06-02DOI: 10.6000/1929-6002.2019.08.03
Ibukun D. Alegbeleye
: Bioenergy production from plant wastes such as corn stover has the potential to improve energy security and mitigate climate change in the United States. However, there is a limited understanding of its utilization and economic potentials for bioenergy production. The overall objective of the study was to estimate the economic profitability of utilizing corn stover for different ventures after harvesting corn, which includes: 1) corn stover production, 2) ethanol production, and 3) electricity generation through on-farm gasifiers. The data for this study was based on secondary data from various sources. The benefit-cost model was applied for the analysis. Investment evaluation criteria include annualized net return from corn stover, ethanol, and electricity generation. Results show that under current conversion rate, the net return from marketing corn stover ranges from $80.61/kg to $394.11/kg, while the net return from ethanol production ranges from $-104.91/ha to $848.96/ha of corn stover under varying price and yield scenarios. Also, under the government subsidy scheme that covers 25% of equipment costs, there is an investment opportunity for on-farm gasifier with an NPV of $4,329.29. The findings of the study show the potential for using corn stover for bioenergy production since it showed a positive net return. Also, the production of ethanol from corn stover is not only economically feasible but also socially acceptable since it does not compete with food production, and serves as a means of income diversification for corn farmers.
{"title":"Economic Analysis of Utilization of Corn Stover for Bioenergy Production: Towards Diversifying Income Opportunities for Small Farmers","authors":"Ibukun D. Alegbeleye","doi":"10.6000/1929-6002.2019.08.03","DOIUrl":"https://doi.org/10.6000/1929-6002.2019.08.03","url":null,"abstract":": Bioenergy production from plant wastes such as corn stover has the potential to improve energy security and mitigate climate change in the United States. However, there is a limited understanding of its utilization and economic potentials for bioenergy production. The overall objective of the study was to estimate the economic profitability of utilizing corn stover for different ventures after harvesting corn, which includes: 1) corn stover production, 2) ethanol production, and 3) electricity generation through on-farm gasifiers. The data for this study was based on secondary data from various sources. The benefit-cost model was applied for the analysis. Investment evaluation criteria include annualized net return from corn stover, ethanol, and electricity generation. Results show that under current conversion rate, the net return from marketing corn stover ranges from $80.61/kg to $394.11/kg, while the net return from ethanol production ranges from $-104.91/ha to $848.96/ha of corn stover under varying price and yield scenarios. Also, under the government subsidy scheme that covers 25% of equipment costs, there is an investment opportunity for on-farm gasifier with an NPV of $4,329.29. The findings of the study show the potential for using corn stover for bioenergy production since it showed a positive net return. Also, the production of ethanol from corn stover is not only economically feasible but also socially acceptable since it does not compete with food production, and serves as a means of income diversification for corn farmers.","PeriodicalId":394478,"journal":{"name":"Journal of Technology Innovations in Renewable Energy","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122627123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-12-24DOI: 10.6000/1929-6002.2019.08.02
Abeer Mohsin, Syeda Zehratul Fatima
: Economic recession, power and fuel shortage, waste management and pollution leading to global warming and climate change are few of the major issues faced by Pakistan, a developing country. These issues can be addressed to some extent by implementing policies and programmes by the government that will promote the development of the renewable energy sector in the country. Pakistan being an agricultural country has great potential to produce bioethanol, by using agricultural and municipal waste, and be able to fulfil its fuel requirements. Countries such as Canada, China and Brazil, the top producers of bioethanol in the world, can be followed as examples in terms of making policies for the growth and development of bioethanol industries. The government should make policies to replace traditional petroleum with ethanol-blended fuel to minimize the energy crisis and environmental pollution throughout the country.
{"title":"Can Bioethanol Lead Pakistan Towards Sustainability and Prosperity? A Narrative Review","authors":"Abeer Mohsin, Syeda Zehratul Fatima","doi":"10.6000/1929-6002.2019.08.02","DOIUrl":"https://doi.org/10.6000/1929-6002.2019.08.02","url":null,"abstract":": Economic recession, power and fuel shortage, waste management and pollution leading to global warming and climate change are few of the major issues faced by Pakistan, a developing country. These issues can be addressed to some extent by implementing policies and programmes by the government that will promote the development of the renewable energy sector in the country. Pakistan being an agricultural country has great potential to produce bioethanol, by using agricultural and municipal waste, and be able to fulfil its fuel requirements. Countries such as Canada, China and Brazil, the top producers of bioethanol in the world, can be followed as examples in terms of making policies for the growth and development of bioethanol industries. The government should make policies to replace traditional petroleum with ethanol-blended fuel to minimize the energy crisis and environmental pollution throughout the country.","PeriodicalId":394478,"journal":{"name":"Journal of Technology Innovations in Renewable Energy","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131300701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-08-06DOI: 10.6000/1929-6002.2019.08.01
P. Anagnostopoulos, S. Papathanassiou
This paper presents a novel power flow method suitable for radial distribution feeders, which consists a modification of the simplified power flow concept known as the DistFlow method, already available in the literature. The proposed method relies upon a differentiated manipulation of power losses, which are taken into account in voltage calculations, unlike other simplified methods, where losses are totally neglected. As a result, calculation accuracy is greatly improved, in terms of node voltages, losses and overall active & reactive power flows. In addition, the proposed method is non-iterative and entirely linear, being easily implementable and fast in execution. The method is particularly suited for feeders with a high penetration of Distributed Energy Resources (DER), providing results that closely match those of a full non-linear power flow and are considerably more accurate than the traditional linearized distribution power flow methods, without any increase in computational burden. The new method is applied to a variety of case studies in the paper, to demonstrate its accuracy and effectiveness, comparing its performance with the simplified (linearized) DistFlow and a conventional non-linear power flow method.
{"title":"A Power Flow Method for Radial Distribution Feeders with DER Penetration","authors":"P. Anagnostopoulos, S. Papathanassiou","doi":"10.6000/1929-6002.2019.08.01","DOIUrl":"https://doi.org/10.6000/1929-6002.2019.08.01","url":null,"abstract":"This paper presents a novel power flow method suitable for radial distribution feeders, which consists a modification of the simplified power flow concept known as the DistFlow method, already available in the literature. The proposed method relies upon a differentiated manipulation of power losses, which are taken into account in voltage calculations, unlike other simplified methods, where losses are totally neglected. As a result, calculation accuracy is greatly improved, in terms of node voltages, losses and overall active & reactive power flows. In addition, the proposed method is non-iterative and entirely linear, being easily implementable and fast in execution. The method is particularly suited for feeders with a high penetration of Distributed Energy Resources (DER), providing results that closely match those of a full non-linear power flow and are considerably more accurate than the traditional linearized distribution power flow methods, without any increase in computational burden. The new method is applied to a variety of case studies in the paper, to demonstrate its accuracy and effectiveness, comparing its performance with the simplified (linearized) DistFlow and a conventional non-linear power flow method.","PeriodicalId":394478,"journal":{"name":"Journal of Technology Innovations in Renewable Energy","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114112988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-11-29DOI: 10.6000/1929-6002.2018.07.07
I. Rossetti, Chemical Plants, E. Bahadori, A. Villa, L. Prati, G. Ramis
H2 is gaining attention as energy vector, particularly if produced from renewable sources. It may be produced through photoreforming of organic compounds that act as hole scavengers to improve hydrogen productivity with respect to direct water photosplitting. Methanol is used here as model molecule to investigate the effect of catalyst composition and of substrate concentration on photocatalytic activity. Simple catalysts formulations were selected, in order to propose an easily scalable technology with a poorly expensive material. TiO2 with different structure (anatase, rutile and a mixture of them) was used as semiconductor, doped with a small amount of Au (0.1 wt%) to improve the lifetime of photogenerated charges. A new photoreactor was set up, with external irradiation that improves the scale up feasibility and possible future application with solar energy. Methanol conversion and hydrogen productivity increased with increasing methanol concentration up to 15 wt%. Rutile led to the highest conversion, but TiO2 P25 showed the highest hydrogen productivity. The best result was achieved by treating a 15 wt% methanol solution with 0.1 wt%Au/TiO2 P25, which led to 0.276 mol H2 h kgcat.
{"title":"Hydrogen Production by Photoreforming of Organic Compounds","authors":"I. Rossetti, Chemical Plants, E. Bahadori, A. Villa, L. Prati, G. Ramis","doi":"10.6000/1929-6002.2018.07.07","DOIUrl":"https://doi.org/10.6000/1929-6002.2018.07.07","url":null,"abstract":"H2 is gaining attention as energy vector, particularly if produced from renewable sources. It may be produced through photoreforming of organic compounds that act as hole scavengers to improve hydrogen productivity with respect to direct water photosplitting. Methanol is used here as model molecule to investigate the effect of catalyst composition and of substrate concentration on photocatalytic activity. Simple catalysts formulations were selected, in order to propose an easily scalable technology with a poorly expensive material. TiO2 with different structure (anatase, rutile and a mixture of them) was used as semiconductor, doped with a small amount of Au (0.1 wt%) to improve the lifetime of photogenerated charges. A new photoreactor was set up, with external irradiation that improves the scale up feasibility and possible future application with solar energy. Methanol conversion and hydrogen productivity increased with increasing methanol concentration up to 15 wt%. Rutile led to the highest conversion, but TiO2 P25 showed the highest hydrogen productivity. The best result was achieved by treating a 15 wt% methanol solution with 0.1 wt%Au/TiO2 P25, which led to 0.276 mol H2 h kgcat.","PeriodicalId":394478,"journal":{"name":"Journal of Technology Innovations in Renewable Energy","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130841669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-09-24DOI: 10.6000/1929-6002.2018.07.04
M. Chandrasekar, C. K. Priyan
{"title":"Thermal Management of Flat Photovolatic Panels using Serrated Fins to Increase Electrical Output","authors":"M. Chandrasekar, C. K. Priyan","doi":"10.6000/1929-6002.2018.07.04","DOIUrl":"https://doi.org/10.6000/1929-6002.2018.07.04","url":null,"abstract":"","PeriodicalId":394478,"journal":{"name":"Journal of Technology Innovations in Renewable Energy","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127618924","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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