Jacques Nébié, S. Zongo, Guy C. Tubreoumya, Augustin S. Zongo, Ilyassé Konkobo, Boubou Bagré, Ali Diané, T. Daho, Serge W. Igo, B. Zeghmati, A. Béré
{"title":"Performance Assessment of a Box Type Solar Cooker Using Jatropha Oil as a Heat Storage Material","authors":"Jacques Nébié, S. Zongo, Guy C. Tubreoumya, Augustin S. Zongo, Ilyassé Konkobo, Boubou Bagré, Ali Diané, T. Daho, Serge W. Igo, B. Zeghmati, A. Béré","doi":"10.4236/epe.2022.142005","DOIUrl":"https://doi.org/10.4236/epe.2022.142005","url":null,"abstract":"","PeriodicalId":62938,"journal":{"name":"能源与动力工程(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74045538","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}
M. Gogom, Courad Onesime Tsahat Oboulhas, Nianga Apila, Anedi Oko Ganongo, D. Lilonga-Boyenga
{"title":"Optimization of Losses Joule in the Congolese Electrical Network Integrated with the Energy Pool of Central Africa in the PEAC Acronym","authors":"M. Gogom, Courad Onesime Tsahat Oboulhas, Nianga Apila, Anedi Oko Ganongo, D. Lilonga-Boyenga","doi":"10.4236/epe.2022.141002","DOIUrl":"https://doi.org/10.4236/epe.2022.141002","url":null,"abstract":"","PeriodicalId":62938,"journal":{"name":"能源与动力工程(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80373914","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 : 2022-01-01DOI: 10.4236/epe.2022.1412041
Papa Monzon Alassane Samake, Papa Touty Traore, Babou Dione, P. Diop, Fatimata Ba, M. Wade
{"title":"Influence of the Magnetic Field on the Transient Decay of the Density of Charge Carriers in a Silicon Photocell with Vertical Multijunctions Connected in Series Placed in Open Circuit","authors":"Papa Monzon Alassane Samake, Papa Touty Traore, Babou Dione, P. Diop, Fatimata Ba, M. Wade","doi":"10.4236/epe.2022.1412041","DOIUrl":"https://doi.org/10.4236/epe.2022.1412041","url":null,"abstract":"","PeriodicalId":62938,"journal":{"name":"能源与动力工程(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91300165","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 : 2022-01-01DOI: 10.4236/epe.2022.1411034
S. Khalil
The main objective of this paper is to predict the diffuse solar energy on a horizontal surface by using data of global solar energy (H) and diffuse solar energy (H d ) at different selected geographical locations in Saudi Arabia during the period time from 1980 to 2019. The low values of the root mean square error RMSE for all correlations indicated a good agreement between the measured and calculated values of H d . The negative values of mean percentage error MPE % for all models show that for all locations, the proposed correlations slightly overestimate H d , and the absolute values of MPE never reach 1.35%. The first, second and third order correlations between the diffuse solar fraction H d /H and the clearness index K t and between the diffuse transmittance H d /H 0 and the sunshine hours have been proposed for the selected locations using the method of regression analysis. The differences between the measured and calculated values of H d show that a first order correlation between H d /H and K t can be used for estimating H d at the present locations with good accuracy. However, second order correlations between H d /H or H d /H 0 and S/S o are recommended for estimating H d at these locations. The average annual differences between measured and calculated values of diffuse solar energy H d on horizontal at selected sites in the present research are dis-cussed.
本文的主要目的是利用1980 - 2019年沙特阿拉伯不同地理位置的全球太阳能(H)和漫射太阳能(H)数据，预测水平面上的漫射太阳能。所有相关性的均方根误差RMSE的低值表明H d的测量值和计算值之间的一致性很好。所有模型的平均百分比误差MPE %均为负值，表明在所有位置，所提出的相关性都略高估了H d, MPE的绝对值从未达到1.35%。利用回归分析的方法，提出了所选地点散射太阳分数H d /H与清晰度指数K t、散射透过率H d /H 0与日照时数的一、二、三级相关关系。测量值与计算值之间的差异表明，H d /H与K t之间的一阶相关性可以用于估计当前位置的H d，并且精度较高。然而，推荐在这些位置估计H /H或H /H 0与S/S 0之间的二阶相关性。讨论了本研究中选定地点的水平漫射太阳能H - d实测值与计算值的年平均差值。
{"title":"Prediction of the Diffuse Solar Energy on Horizontal at Different Selected Locations","authors":"S. Khalil","doi":"10.4236/epe.2022.1411034","DOIUrl":"https://doi.org/10.4236/epe.2022.1411034","url":null,"abstract":"The main objective of this paper is to predict the diffuse solar energy on a horizontal surface by using data of global solar energy (H) and diffuse solar energy (H d ) at different selected geographical locations in Saudi Arabia during the period time from 1980 to 2019. The low values of the root mean square error RMSE for all correlations indicated a good agreement between the measured and calculated values of H d . The negative values of mean percentage error MPE % for all models show that for all locations, the proposed correlations slightly overestimate H d , and the absolute values of MPE never reach 1.35%. The first, second and third order correlations between the diffuse solar fraction H d /H and the clearness index K t and between the diffuse transmittance H d /H 0 and the sunshine hours have been proposed for the selected locations using the method of regression analysis. The differences between the measured and calculated values of H d show that a first order correlation between H d /H and K t can be used for estimating H d at the present locations with good accuracy. However, second order correlations between H d /H or H d /H 0 and S/S o are recommended for estimating H d at these locations. The average annual differences between measured and calculated values of diffuse solar energy H d on horizontal at selected sites in the present research are dis-cussed.","PeriodicalId":62938,"journal":{"name":"能源与动力工程(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83952454","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}
{"title":"Stability Study of a 23 MVA Turbine Generator","authors":"G. Effiong, P. K. Ainah, Nduka W. Aguiyi","doi":"10.4236/epe.2022.148017","DOIUrl":"https://doi.org/10.4236/epe.2022.148017","url":null,"abstract":"","PeriodicalId":62938,"journal":{"name":"能源与动力工程(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79514909","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}
E. I. Mouhoumed, Mohamed-Awal Abdillahi Mohamed, Abdourachid Ibrahim Igueh
{"title":"Study of Different Parameters Affecting the Productivity of Solar Still for Seawater Desalination under Djiboutian Climate","authors":"E. I. Mouhoumed, Mohamed-Awal Abdillahi Mohamed, Abdourachid Ibrahim Igueh","doi":"10.4236/epe.2022.146011","DOIUrl":"https://doi.org/10.4236/epe.2022.146011","url":null,"abstract":"","PeriodicalId":62938,"journal":{"name":"能源与动力工程(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76855528","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 : 2022-01-01DOI: 10.4236/epe.2022.1410028
M. Savadogo, A. Ouedraogo, B. Soro, Zi Daouda Koudougou, M. Zoungrana, I. Zerbo
{"title":"Analysis and Comparison of Doping Level Effects on a Crystalline Silicon PV Cell under Both Moderate Light Concentration and Normal Illumination Modes","authors":"M. Savadogo, A. Ouedraogo, B. Soro, Zi Daouda Koudougou, M. Zoungrana, I. Zerbo","doi":"10.4236/epe.2022.1410028","DOIUrl":"https://doi.org/10.4236/epe.2022.1410028","url":null,"abstract":"","PeriodicalId":62938,"journal":{"name":"能源与动力工程(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77658044","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}
M. Bashahu, Pierre Nsabimana, Juvenal Barakamfitiye, Fidèle Niyukuri
1-year hourly wind speed data from two Burundian stations, namely Bujumbura and Muyinga, have been processed in this work to bring an efficient help for the planning and installation of wind energy conversion systems (WECS) at those localities. Mean seasonal and diurnal variations of wind direction and wind shear exponent have been derived. Two-parameter Weibull probability density functions (PDFs) fitting the observed monthly and annual wind speed relative frequency distributions have been implemented. As shown through three complementary statistical tests, the fitting technique was very satisfactory. A wind resource analysis at 10 m above ground level (AGL) has led to a mean power density at Bujumbura which is almost thirteen fold higher than at Muyinga. The use of the empirical power law to extrapolate wind characteristics at heights from 150 to 350 m AGL has shown that energy potential of hilltops around Muyinga was only suitable for small, individual scale wind energy applications. At the opposite, wind energy potential of ridge-tops and hilltops around Bujumbura has been found suitable for medium and large scale electricity production. For that locality and at those heights, energy outputs and capacity factors (CF or C f ) have been computed for ten selected wind turbines (WTs), together with costs of electricity (COE) using the present value of cost (PVC) method. Amongst those WTs, YDF-1500-87 and S95-2.1 MW have emerged as the best options for installation owing to their highest CF and lowest COE. Moreover, an analysis of those two quantities at monthly basis for YDF-1500-87 WT has led to its best performance in the dry season. Compared to the average present COE of household hydroelectricity consumption, results of this study have evidenced economical feasibility and benefit of WECS setting in selected Burundian sites in order to supplement traditional electricity sources.
{"title":"Assessment of the Wind Energy Potential of Two Burundian Sites","authors":"M. Bashahu, Pierre Nsabimana, Juvenal Barakamfitiye, Fidèle Niyukuri","doi":"10.4236/epe.2022.145010","DOIUrl":"https://doi.org/10.4236/epe.2022.145010","url":null,"abstract":"1-year hourly wind speed data from two Burundian stations, namely Bujumbura and Muyinga, have been processed in this work to bring an efficient help for the planning and installation of wind energy conversion systems (WECS) at those localities. Mean seasonal and diurnal variations of wind direction and wind shear exponent have been derived. Two-parameter Weibull probability density functions (PDFs) fitting the observed monthly and annual wind speed relative frequency distributions have been implemented. As shown through three complementary statistical tests, the fitting technique was very satisfactory. A wind resource analysis at 10 m above ground level (AGL) has led to a mean power density at Bujumbura which is almost thirteen fold higher than at Muyinga. The use of the empirical power law to extrapolate wind characteristics at heights from 150 to 350 m AGL has shown that energy potential of hilltops around Muyinga was only suitable for small, individual scale wind energy applications. At the opposite, wind energy potential of ridge-tops and hilltops around Bujumbura has been found suitable for medium and large scale electricity production. For that locality and at those heights, energy outputs and capacity factors (CF or C f ) have been computed for ten selected wind turbines (WTs), together with costs of electricity (COE) using the present value of cost (PVC) method. Amongst those WTs, YDF-1500-87 and S95-2.1 MW have emerged as the best options for installation owing to their highest CF and lowest COE. Moreover, an analysis of those two quantities at monthly basis for YDF-1500-87 WT has led to its best performance in the dry season. Compared to the average present COE of household hydroelectricity consumption, results of this study have evidenced economical feasibility and benefit of WECS setting in selected Burundian sites in order to supplement traditional electricity sources.","PeriodicalId":62938,"journal":{"name":"能源与动力工程(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72454883","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 : 2022-01-01DOI: 10.4236/epe.2022.1411033
Nutifafa K. Fiasorgbor, Robert Aziz Tia Abdulai, Mina Antwi-Yeboah
{"title":"A Review of the Characteristics and Challenges of Electricity Distribution in Ghana: Case Study of the Northern Electricity Distribution Company","authors":"Nutifafa K. Fiasorgbor, Robert Aziz Tia Abdulai, Mina Antwi-Yeboah","doi":"10.4236/epe.2022.1411033","DOIUrl":"https://doi.org/10.4236/epe.2022.1411033","url":null,"abstract":"","PeriodicalId":62938,"journal":{"name":"能源与动力工程(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85562904","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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