复合抛物面聚光太阳能PV/T系统的实验研究

设计并搭建了CPC低倍聚光太阳能PV/T单通道空气系统实验台,对不同工作环境下聚光PV/T系统的热电性能进行了实验研究。实验研究结果显示:在聚光条件下,系统的各表面温度随光照强度的增加而升高,随下部通道入口空气流速的增加而降低。聚光PV/T系统的最大输出功率可达到60W,比对应相同电池面积平板系统最大输出功率高20W。聚光PV/T系统的各效率随光照强度增加而增大,系统的最大电效率为11%,最大热效率为70%,最大火用效率为16%,比单纯发电时最大火用效率提高约5%。实验获得了一批新的有价值的实验数据,为聚光太阳能光伏光热系统的进一步研究提供了依据。

EXPERIMENTAL STUDY ON A CPC CONCENTRATING SOLAR PV/T SYSTEM

A concentration solar PV/T experimental system was designed and set up,it ’s electric-thermal performance was measured at different conditions.Experimental results showed that the temperature of the various components of the system increase with the increasing of the solar radiation intensity,and decrease with the increasing of the air inlet velocity of the back channel.The power output of concentrating system is higher than the non-concentrating system.The maximum power output for the concentrating PV/T system is 60W,is 20W higher compared to a similar non-concentrating photovoltaic panel with the same cell area.The electrical efficiency of the concentrating PV/T system increase with increasing the solar radiation intensity.The maximum electrical efficiency for the concentrating system is 11%,and the highest thermal efficiency is 70%,and the maximum exergy efficiency is 16%.The maximum exergy efficiency for the concentrating system is 5% higher than non-concentrating system.Thus the thermal and electrical performance of the concentrating PV/T air system is better than the performance of the plate system.The experimental study obtained valuable information regarding the design and operation of such types of concentrating PV/T system.