太阳能砷化镓电池与导热油的光热转换实验

Experiment on Photothermal Conversion between GaAs Solar Cells and Heat Conduction Oil

为提高聚光时太阳能砷化镓电池的效率,利用导热油作为换热介质,将砷化镓电池的聚光温度冷却,温度升高后的导热油把热量传给低沸点工质,促使工质汽化并进入膨胀机做功。对三种不同冷却方式下砷化镓电池的效率进行了实验对比,结果表明:以导热油为介质的冷却方式,与水冷和风冷相比,砷化镓电池的平均温度分别降低了5.75℃和40.04℃,其平均效率分别提高了1.83%和11.96%。

Abstract：Using heat conduction oil as the thermal transfer medium to cool the GaAs solar cells focusing temperature for its efficiency increase. Heat conduction oil became high temperature and transferred thermal energy to low boiling refrigerant, and then the refrigerant entering the expander to work after vaporization. Experiment analyzed GaAs cells efficiency of three different cooling methods. Comparing with water-cooled and air-cooled, the results show that the heat conduction oil as the medium of cooling, the average temperature of GaAs cells were decreased 5.75 ℃ and 40.04℃ respectively and its average efficiency increased 1.83 % and 11.96 % respectively.