聚光时提高太阳电池效率的实验研究

Experimental investigation on improving efficiency of concentrating solar cells

为了能够更有效地提高聚光条件下太阳电池的转换效率,在重力热管和温差发电模块的基础上,建立了一种通过利用热管的高效传热性能和良好的均温性导出电池板的热量,同时利用温差发电模块将太阳电池板的余热转化为电能的新型太阳电池冷却系统,并且分别对三种不同冷却方式下三接面砷化镓电池板的性能进行了实验研究。实验结果表明,与"热管"冷却技术、不冷却技术相比,"热管+温差发电"冷却技术综合利用了光伏与光热发电技术,有效地降低了太阳电池的温度,较好地提高了电池板转换效率,并且使电池板的转换效率高达32%。

In order to improve the conversion efficiency of concentrating solar cells, based on gravity heat pipe and thermoelectric module, a new solar cell cooling system was established, which could dissipate heat by gravity heat pipe with effective heat transfer and good temperature uniformity performance and transform waste heat of panel into electricity by thermoelectric module. In addition, the performance of triple-junction gallium arsenide panel under three different cooling conditions was investigated in this paper. The experimental results show that, compared with heat pipe cooling technology and without cooling technology, ＂heat pipe＋thermoelectric＂ comprehensively utilizes photovoltaic and thermal power generation technology, reduces effectively temperature of solar cells and improves the conversion efficiency of solar cells, and the conversion efficiency increases up to 32%.