Investigating the impact of using different fluids as liquid spectrum filters on photovoltaic-thermal system performance

IF 9 1区 工程技术 Q1 ENERGY & FUELS Renewable Energy Pub Date : 2024-11-02 DOI:10.1016/j.renene.2024.121783
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Abstract

One practical solution to the issue of solar cells overheating and deteriorating electrical efficiency due to the cell's failure to convert all of the solar radiation that strikes it into electrical energy is to use spectral splitting technology. This technology prohibits the solar spectrum portion that creates the issue from reaching the cell by allowing just the part that is responsible for producing electrical power to reach it. The system developed for this study combines a fluid absorption-based spectral splitting mechanism with a compound parabolic solar concentrator. Several practical experiments were carried out to compare the thermal and electrical performance of some liquids, including water, ethanol, methanol, and propylene glycol. Additionally, a theoretical simulation of electrical performance was conducted, and its outcomes were compared with the practical ones. Based on the experimental results, ethanol was shown to have the highest percentage improvement in power and electrical efficiency (272.3 % and 74.6 %), whereas propylene glycol experienced the lowest percentage improvements (167.8 % and 25.6 %). This can be explained by the fact that the temperature of the PV cells was reduced by the greatest percentage (10.2 %) for ethanol and the least percentage (6.1 %) for propylene glycol. Moreover, the highest thermal and total efficiencies were demonstrated by ethanol (9.5 % and 11 %), whereas the lowest efficiencies were recorded by propylene glycol (6.9 % and 8.7 %). In addition, the practical and theoretical results exhibit a high degree of consistency, with error percentages less than 5 %.

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研究使用不同液体作为液体光谱过滤器对光伏热系统性能的影响
由于太阳能电池无法将照射到电池上的所有太阳辐射转化为电能,导致电池过热和电能效率下降,解决这一问题的一个切实可行的办法是使用光谱分离技术。这种技术只允许产生电能的部分到达电池,而禁止产生问题的太阳光谱部分到达电池。本研究开发的系统结合了基于流体吸收的光谱分离机制和复合抛物面太阳能聚光器。我们进行了一些实际实验,以比较一些液体(包括水、乙醇、甲醇和丙二醇)的热性能和电性能。此外,还对电性能进行了理论模拟,并将模拟结果与实际结果进行了比较。实验结果表明,乙醇的功率和电气效率提高的百分比最高(分别为 272.3% 和 74.6%),而丙二醇提高的百分比最低(分别为 167.8% 和 25.6%)。这是因为乙醇降低光伏电池温度的比例最大(10.2%),而丙二醇降低温度的比例最小(6.1%)。此外,乙醇的热效率和总效率最高(分别为 9.5% 和 11%),而丙二醇的效率最低(分别为 6.9% 和 8.7%)。此外,实际结果和理论结果具有高度一致性,误差率小于 5%。
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来源期刊
Renewable Energy
Renewable Energy 工程技术-能源与燃料
CiteScore
18.40
自引率
9.20%
发文量
1955
审稿时长
6.6 months
期刊介绍: Renewable Energy journal is dedicated to advancing knowledge and disseminating insights on various topics and technologies within renewable energy systems and components. Our mission is to support researchers, engineers, economists, manufacturers, NGOs, associations, and societies in staying updated on new developments in their respective fields and applying alternative energy solutions to current practices. As an international, multidisciplinary journal in renewable energy engineering and research, we strive to be a premier peer-reviewed platform and a trusted source of original research and reviews in the field of renewable energy. Join us in our endeavor to drive innovation and progress in sustainable energy solutions.
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