非跟踪式复合抛物面聚光器瞬时集热量受入射偏角影响较大.文章通过在传统复合抛物面聚光器焦斑上方布置板背面为镜面的光伏组件,实现对逸出光线的再次利用,提高了装置的太阳能转化效率.利用光学软件对基于光热、光伏耦合供能新型复合抛物面聚光器进行了光线追迹,对比分析了径向入射偏角对光线接收率的影响.在实际环境中,测试、研究了新型复合抛物面聚光器进、出口温度、瞬时集热量、输出电功率等随时间的变化规律.结果表明,新型复合抛物面聚光器与传统复合抛物面聚光器的光线接收率随入射偏角变化趋势一致,当径向入射偏角为20 °时,新型复合抛物面聚光器的光线接收率为89.00％,比传统复合抛物面聚光器增加了 72.82％.在晴天集热中,新型复合抛物面聚光器最大出口温度为34.2 ℃,最大光热转化效率为73.40％,日输出电功率为118.40 W.
Investigation on the performance of a novel compound parabolic concentrator coupled photothermal and photoelectric energy suppling
The instantaneous heat collection of the non-tracing compound parabolic concentrator is greatly affected by the incident angle.Therefore,in this paper,the PV module with a mirror on its backside was arranged above the focal spot of the traditional compound parabolic concentrator to realize the reuse of the escaped light and improve the solar energy conversion efficiency of the device.The ray tracing of the novel compound parabolic concentrator based on photothermal photovoltaic coupling energy supply was carried out with optical software,and the influence of radial incident angle on the light receiving rate was compared and analyzed.In the actual environment,the variation of the inlet and outlet temperature,instantaneous heat collection and output power of the novel compound parabolic concentrator with time were tested and studied.The results indicate that the light receiving rate of the novel compound parabolic concentrator is consistent with that of the traditional compound parabolic concentrator.When the radial incident angle is 20 °,the light receiving rate of the novel compound parabolic concentrator is 89.00％,which is 72.82％higher than that of the traditional compound parabolic concentrator.In sunny days,the maximum outlet temperature,the photothermal conversion efficiency and the daily output power of the novel compound parabolic concentrator.are 34.20 ℃,73.40％and 118.40 W,respectively.
photothermalphotovoltaiccouplingconcentratingsolar energy
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维普
