太阳电池表面镀分光膜的CPV/T系统设计与光学分析

CPV/T SYSTEM DESIGN AND OPTICAL ANALYSIS WITH BEAMSPLITTING FILM COATED ON SOLAR CELLS'SURFACE

提出一种线性菲涅尔反射聚光分频光伏光热(CPV/T)综合利用系统,其太阳电池表面镀有分光膜,可将不利于光伏发电谱段的太阳辐射反射至热接收器进行光热利用。使用光线追踪法对此系统的结构参数和光学性能进行理论分析,结果表明太阳电池表面辐射能流密度均匀性好,热接收器光线拦截率高,所设计的分光膜能对太阳能进行有效分频利用,使系统结构紧凑,为进一步提高光伏光热系统总效率提供可能性。

A concentrating photovoltaic/thermal （CPV/T） hybrid utilization system with Linear Fresnel Reflector （LFR） was proposed. The surface of solar cells was coated with beam-splitting film which could reflect the undesired light for PV to thermal receiver. The construction parameters and optical performance of the proposed system were theoretical analyzed by using ray tracing method. The results show that the radiation intensity distribution on solar cells is uniform, and the thermal receiver has high interception ratio. The designed beam-splitting film can split the concentrated solar beams for solar cells and thermal receivers and simplify the hybrid system. The proposed system can provide the possibility of further improving the utility efficiency of solar energy.