印度气候条件下太阳能光伏冷却提高能源转换效率的实验研究和验证

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2022-10-27 DOI:10.18186/thermal.1195570

Pritam Bhat, A. Iyengar, A. N, Pavan KUMAR REDDY

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引用次数: 0

摘要

太阳能光伏(PV)电池平均将10%至15%的入射太阳辐射转化为电能，剩余的能量作为未使用的热能被浪费掉。太阳能光伏发电的性能在很大程度上取决于其工作温度，而工作温度又取决于太阳辐照。由于载流子复合，太阳能光伏的效率降低了较高的PV温度。随着温度的升高，太阳能光伏效率显著下降。太阳能光伏电池表面的粉尘沉积降低了入射能量，目前还没有商业技术可以缓解这一问题。为了提高太阳能光伏发电系统的能量转换效率，采用了前沿水冷却技术。FW冷却技术将电池温度保持在标准测试条件下(STC)，而不受环境空气条件的影响，同时还能洗去灰尘沉积物，从而在延长太阳能电池生命周期的同时，提供电池制造商规定的最大能量转换效率。实验在一个100w的太阳能电池板上进行，为期2周，使用Arduino控制器的数据采集系统对电池板的STC进行分析和维护，以获得最大功率。对系统的数学模型进行了分析，所得结果与实验测量结果吻合较好。采用FW冷却的太阳能光伏板在最大功率点(MPP)时的输出功率增加了17瓦，效率提高了9%。利用MATLAB Simulink软件对FW冷却技术进行建模。该模型能够预测太阳能光伏电池在给定辐照度下，在冷却和不冷却的情况下产生的功率。开发的模型现在可以用于设计大型太阳能光伏系统安装的冷却系统。

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Experimental investigation and validation of solar PV cooling for enhanced energy conversion efficiency for Indian climatic conditions

Solar Photovoltaic (PV) cells convert an average of 10 to 15% of the incident solar radiation into electricity and remaining energy is wasted as unused heat energy. The p erformance of solar PV is largely dependent on its operating temperature, which is again dependent on solar irradiation. The efficiency of solar PV reduces the higher PV temperature due to charge carrier recombination. The solar PV efficiency drops considerably wit h increasing temperature. Dust deposition on the surface of solar PV cells reduce incident energy and no technology is commercially available to mitigate the problem. The objective of the present work is to enhance the energy conversion efficiency of solar PV by adopting Front Water (FW) cooling technique. The FW cooling technique maintains the cell temperature at Standard Test Conditions (STC) irrespective of ambient air conditions and also washes away dust deposits, thereby providing maximum energy conversion efficiency specified by the cell manufacturer during the operation with increased lifecycle of solar cells. The experiment was carried out on a 100 W solar panel for a period of 2 weeks and data acquisition system with Arduino controller was used to analyze and maintain STC of the panel to obtain maximum power. The mathematical model of the system was analyzed and obtained results were in good agreement with the experimental measurements. The solar PV panel with FW cooling yielded an efficiency improvement of 9% with 17 W of increased power output at Maximum Power Point (MPP). MATLAB Simulink software is used to model t he FW cooling technique. The model is able to predict the power generated by the solar PV cells for the given irradiance with and without cooling. The developed model can now be utilized to design cooling systems for larger installation of solar PV systems.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.