INVESTIGATION OF CONCENTRATING SOLAR PHOTOVOLTAIC/THERMAL SYSTEM PERFORMANCE BASED ON FRESNEL LENS

In this paper the one dimensional steady heat transfer model of concentrating solar pho- tovoltaic/thermal system based on Fresnel lens was established.The thermal,electricity and exergy efficiency of six different structure were calculated and compared.The analysis and results present: the solar photovoltaic/thermal system can get thermal energy for sacrifice of little electricity energy; although increasing glass cover can decrease thermal loss,but increase optical efficiency and system exergy efficiency;in terrible ambient conditions there should be insulation between lens and absorber, this can enhance thermal efficiency and not affect electricity energy.