多曲面槽式聚光太阳电池电热联供系统性能研究

介绍了一种多曲面槽式太阳能聚光器的工作原理,对该装置进行了三维建模,利用光学分析软件对该聚光器安装平板式太阳电池进行光线追迹分析,直观地再现了聚焦光线的分布.基于该多曲面槽式聚光系统,提出一种新型的聚光太阳电池电热联供系统(TCPV/T).该系统能够有效利用太阳辐射能量,提高太阳电池输出电功率、光电转换效率,并将太阳电池产生的热量有效回收,实现聚光发电系统对外输出电能、热能.构建了多曲面槽式聚光多晶硅太阳电池电热联供实验系统.实验结果表明,在约3倍太阳聚光作用下,与非聚光平板电池、安装于同一聚光器内的太阳电池输出电功率相比,聚光电热联供系统输出最大电功率分别提高了96.4%和64.2%,系统综合性能效率达到62.8%.

Performance Analysis of a Multiple Chamber Trough Concentrating Photovoltaic/Thermal System

A multiple chamber trough solar collector and its working principle were presented. A 3D model of the corrector supported with optical analysis software was used to analyze the ray tracing of the flat-plate solar cell panel. The distribution of the concentrated light could be visualized. Based on the multiple chamber trough concentrator, a novel multiple chamber trough concentrating polycrystalline silicon photovoltaic/thermal system (TCPV/T) was proposed. The TCPV/T system could provide both the power and heat. Solar energy could be efficiently utilized with the combined cycle system and the output electrical power as well as electrical efficiency of the solar cell be enhanced. An experimental set combined heating and power devices driven by solar concentrating trough was constructed. Experiment results indicate that, under about 3 times of solar concentrating, the maximum output power produced by TCPV/T system is higher than that of flat-plate photovoltaic (PV) system and trough concentrating photovoltaic system by 96.4% and 64.2%, respectively. The synthetic energy-saving efficiency of TCPV/T system is 62.8%.