研究一种集成了封装相变材料的新型混合穿孔光伏/太阳能空气加热器的能量和能效性能:实验研究

IF 6 2区 工程技术 Q2 ENERGY & FUELS Solar Energy Pub Date : 2024-11-02 DOI:10.1016/j.solener.2024.113062
Hadi Farzan , Mojtaba Mahmoudi , Omid Moradnejad , Forouzesh Rafiei Rezvani
{"title":"研究一种集成了封装相变材料的新型混合穿孔光伏/太阳能空气加热器的能量和能效性能:实验研究","authors":"Hadi Farzan ,&nbsp;Mojtaba Mahmoudi ,&nbsp;Omid Moradnejad ,&nbsp;Forouzesh Rafiei Rezvani","doi":"10.1016/j.solener.2024.113062","DOIUrl":null,"url":null,"abstract":"<div><div>The current study conducts energy and exergy analyses on an innovative hybrid perforated photovoltaic/solar air heater (PV/SAH) using passive and active methods to improve thermal and electrical efficiencies. Since increasing PVs’ temperature reduces their electrical efficiency, various techniques have been employed to handle this problem, employing effective cooling strategies. This study uses an experimental approach to analyze two cooling strategies: encapsulated phase change material (PCM) units as a passive method and forced-convection mechanism as an active method. Two scenarios were considered: hybrid PV/SAH with and without encapsulated PCM units at two mass flow rates of 0.05 kg/s and 0.07 kg/s. The results illustrate that the encapsulated PCM reduced the PV and outlet temperatures by 2 °C and 4 °C, and 3 °C and 1.5 °C at the mass flow rates of 0.05 kg/s and 0.07 kg/s, respectively. The lower the outlet temperature, the lower the thermal efficiency. Hence, using the PCM units decreased the thermal efficiency but improved the electrical efficiency. The PCM units caused a reduction in daily overall energy efficiency by 12.41 % and 8.36 % at the mass flow rates of 0.05 kg/s and 0.07 kg/s due to reducing thermal efficiency. Unlike the energy efficiency, the PCM units improved the daily overall exergy efficiency by 6.28 % and 8.71 % at the mass flow rates considered. Hence, using passive and active methods is a robust technique to improve the hybrid systems’ performance.</div></div>","PeriodicalId":428,"journal":{"name":"Solar Energy","volume":"284 ","pages":"Article 113062"},"PeriodicalIF":6.0000,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Study on energy and exergy performance of a new hybrid perforated photovoltaic/solar air heater integrated with encapsulated phase change materials: An experimental study\",\"authors\":\"Hadi Farzan ,&nbsp;Mojtaba Mahmoudi ,&nbsp;Omid Moradnejad ,&nbsp;Forouzesh Rafiei Rezvani\",\"doi\":\"10.1016/j.solener.2024.113062\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>The current study conducts energy and exergy analyses on an innovative hybrid perforated photovoltaic/solar air heater (PV/SAH) using passive and active methods to improve thermal and electrical efficiencies. Since increasing PVs’ temperature reduces their electrical efficiency, various techniques have been employed to handle this problem, employing effective cooling strategies. This study uses an experimental approach to analyze two cooling strategies: encapsulated phase change material (PCM) units as a passive method and forced-convection mechanism as an active method. Two scenarios were considered: hybrid PV/SAH with and without encapsulated PCM units at two mass flow rates of 0.05 kg/s and 0.07 kg/s. The results illustrate that the encapsulated PCM reduced the PV and outlet temperatures by 2 °C and 4 °C, and 3 °C and 1.5 °C at the mass flow rates of 0.05 kg/s and 0.07 kg/s, respectively. The lower the outlet temperature, the lower the thermal efficiency. Hence, using the PCM units decreased the thermal efficiency but improved the electrical efficiency. The PCM units caused a reduction in daily overall energy efficiency by 12.41 % and 8.36 % at the mass flow rates of 0.05 kg/s and 0.07 kg/s due to reducing thermal efficiency. Unlike the energy efficiency, the PCM units improved the daily overall exergy efficiency by 6.28 % and 8.71 % at the mass flow rates considered. Hence, using passive and active methods is a robust technique to improve the hybrid systems’ performance.</div></div>\",\"PeriodicalId\":428,\"journal\":{\"name\":\"Solar Energy\",\"volume\":\"284 \",\"pages\":\"Article 113062\"},\"PeriodicalIF\":6.0000,\"publicationDate\":\"2024-11-02\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Solar Energy\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0038092X24007576\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENERGY & FUELS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Solar Energy","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0038092X24007576","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
引用次数: 0

摘要

本研究采用被动和主动方法,对创新型混合穿孔光伏/太阳能空气加热器(PV/SAH)进行了能量和放能分析,以提高热效率和电效率。由于光伏的温度升高会降低其电气效率,因此人们采用了各种技术来解决这一问题,并采用了有效的冷却策略。本研究采用实验方法分析了两种冷却策略:作为被动方法的封装相变材料 (PCM) 单元和作为主动方法的强制对流机制。研究考虑了两种情况:在 0.05 千克/秒和 0.07 千克/秒两种质量流量条件下,使用和不使用封装相变材料单元的混合光伏/太阳能。结果表明,在 0.05 千克/秒和 0.07 千克/秒的质量流量下,封装 PCM 分别将光伏和出口温度降低了 2 ℃ 和 4 ℃,以及 3 ℃ 和 1.5 ℃。出口温度越低,热效率越低。因此,使用 PCM 设备降低了热效率,但提高了电效率。在质量流量为 0.05 千克/秒和 0.07 千克/秒时,由于热效率降低,PCM 单元导致日总能效分别降低了 12.41% 和 8.36%。与能效不同的是,在考虑的质量流量条件下,PCM 设备的日总体放能效分别提高了 6.28 % 和 8.71 %。因此,使用被动和主动方法是提高混合动力系统性能的可靠技术。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
Study on energy and exergy performance of a new hybrid perforated photovoltaic/solar air heater integrated with encapsulated phase change materials: An experimental study
The current study conducts energy and exergy analyses on an innovative hybrid perforated photovoltaic/solar air heater (PV/SAH) using passive and active methods to improve thermal and electrical efficiencies. Since increasing PVs’ temperature reduces their electrical efficiency, various techniques have been employed to handle this problem, employing effective cooling strategies. This study uses an experimental approach to analyze two cooling strategies: encapsulated phase change material (PCM) units as a passive method and forced-convection mechanism as an active method. Two scenarios were considered: hybrid PV/SAH with and without encapsulated PCM units at two mass flow rates of 0.05 kg/s and 0.07 kg/s. The results illustrate that the encapsulated PCM reduced the PV and outlet temperatures by 2 °C and 4 °C, and 3 °C and 1.5 °C at the mass flow rates of 0.05 kg/s and 0.07 kg/s, respectively. The lower the outlet temperature, the lower the thermal efficiency. Hence, using the PCM units decreased the thermal efficiency but improved the electrical efficiency. The PCM units caused a reduction in daily overall energy efficiency by 12.41 % and 8.36 % at the mass flow rates of 0.05 kg/s and 0.07 kg/s due to reducing thermal efficiency. Unlike the energy efficiency, the PCM units improved the daily overall exergy efficiency by 6.28 % and 8.71 % at the mass flow rates considered. Hence, using passive and active methods is a robust technique to improve the hybrid systems’ performance.
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Solar Energy
Solar Energy 工程技术-能源与燃料
CiteScore
13.90
自引率
9.00%
发文量
0
审稿时长
47 days
期刊介绍: Solar Energy welcomes manuscripts presenting information not previously published in journals on any aspect of solar energy research, development, application, measurement or policy. The term "solar energy" in this context includes the indirect uses such as wind energy and biomass
期刊最新文献
Corrigendum to “Experimental investigation of a photovoltaic solar air conditioning system and comparison with conventional unit in the context of the state of Piaui, Brazil” [Sol. Energy 272 (2024) 112492] Sustainable desalination through hybrid photovoltaic/thermal membrane distillation: Development of an off-grid prototype Exploring bamboo based bio-photovoltaic devices: Pioneering sustainable solar innovations- A comprehensive review Design and analysis of inorganic tandem architecture with synergistically optimized BaSnS3 top and AgTaS3 bottom perovskite Sub-Cells Designing and optimizing the lead-free double perovskite Cs2AgBiI6/Cs2AgBiBr6 bilayer perovskite solar cell
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1