中倍聚光太阳电池液浸散热特性的模拟实验

提出了一种将太阳电池液浸到冷却介质中,电池与介质间进行直接接触式换热的冷却方式.设计了小型实验装置,选用二甲基硅油为冷却介质,采用长弧氙灯模拟聚光条件,选择模拟材料制作太阳电池模拟片,进行了模拟实验研究.结果表明:采用液浸冷却方式,能够从模拟片表面带走72.2kW/m~2的热负荷,同时将模拟片的温度冷却到70℃以下;模拟片与介质间的单相对流传热系数能够达到约750W/(m~2·℃);介质温度的改变对模拟片与介质间的对流换热温差和对流传热系数影响较小.

HEAT DISSIPATION PERFORMANCE OF CONCENTRATING SOLAR CELL WITH DIRECT LIQUID IMMERSED

A direct contact heat transfer mode by immersing solar cells in cooling medium was proposed in this paper. A small experimental system was built up to carry out the simulation experiments. Dimethyl silicon oil was selected as the cooling medium, a water-cooling tubular xenon lamp was used to simulate concentrated illumination, and proper simulation material was chosen to make simulative sheets for solar cells. The results show that thermal load of 72. 2kW/m~2 on simulative sheets can be carried away by using liquid immersion cooling mode and the temperature of simulative sheets can be cooled to less than 70℃; The single-phase convective heat transfer coefficient reaches 750W/(m~2 ·℃) ; The temperature change of the cooling medium has relatively small influence on the temperature difference and the convective heat transfer coefficient between the simulative sheets and the cooling medium.