基于场协同理论的高倍聚光电池微通道换热器结构优化

Structural optimization of microchannel heat exchanger for high concentration photovoltaic cell based on field synergy theory

针对高倍聚光电池负温度系数效应,造成电池光电效率降低等问题,采用基于正交试验的矩阵分析,对微通道换热器的结构进行优化,以场协同角为评价指标,在微通道中添加肋片,采用水基混合纳米流体为换热工质,优化微通道换热系统。结果表明,添加肋片和采用混合纳米流体可以在一定程度上有效优化场协同角,提高微通道换热器的综合性能,降低砷化镓电池的表面温度。

In view of the negative temperature coefficient effect of high-power concentrating cells,which reduces the photoelectric efficiency of the battery,this paper optimizes the structure of the microchannel heat exchanger by using matrix analysis based on orthogonal test.Taking the field synergy angle as the evaluation index,ribs were added to the microchannel,and water-based mixed nanofluids were used as the heat exchange working fluid to optimize the microchannel heat exchange system.The results show that the addition of ribs and the use of mixed nanofluids can effectively optimize the field synergy angle to a certain extent,improve the comprehensive performance of the microchannel heat exchanger,and reduce the surface temperature of the gallium arsenide battery.