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本文对铜铟镓硒(CIGS)光伏管板式集热器建立了数学模型,定义了以吸热背板平均温度为基准的热损系数U_L,给出了相应吸热量计算式。本文以一次能源节约效率评价光伏集热器的性能,对制冷剂冷却的CIGS光伏管板式集热器的性能进行模拟研究。结果显示,减小管间距、减小蒸发管内径和增大蒸发管的管长均有利于提高CIGS光伏管板式集热器的热、电和一次能源节约效率。同时,减小蒸发管内径和增大管长时,流经集热板的制冷剂压降增大,设计时应控制其他局部阻力来保证其性能。
In this paper, the mathematical model of CIGS solar collector is established, and the heat loss coefficient U_L is deduced based on the average temperature of the endothermic backsheet. The corresponding heat absorption formula is given. In this paper, the performance of photovoltaic collector was evaluated by primary energy saving efficiency. The performance of refrigerant-cooled CIGS photovoltaic collector-plate collector was simulated. The results show that reducing the tube spacing, decreasing the inner diameter of the evaporation tube and increasing the tube length of the evaporation tube all contribute to improving the heat, electricity and primary energy saving efficiency of the CIGS PV tube plate collector. At the same time, reducing the inner diameter of the evaporation tube and increasing the tube length, the pressure drop of the refrigerant flowing through the collector plate increases, and other local resistances should be controlled to ensure the performance.