中国激光, 2014, 41 (s1): s116002, 网络出版: 2014-07-03   

适合于全玻璃真空管的CPC光学性能分析

Optical Performance of CPCs Suitable for All-Glass Evacuated Tubes
作者单位
云南师范大学太阳能研究所, 云南 昆明 650092
摘要
利用光线追踪法分析了6个适应于全玻璃真空管复合抛物面聚光器(CPC)的光学效率对入射角的依赖关系,在此基础上,根据太阳几何学分析了6种东西向CPC聚光器对真空管的年聚光量。研究结果表明:当入射光在全CPC的接收角内时,依据“帽形”吸收体设计的、底部配备V型反射腔的CPC,其光学效率高于其他设计方案,但当光线超过全CPC的接收角时,其光学效率小于其他设计方案;从各种设计方案的年聚光量来看,依据“冰淇淋”吸收体设计的CPC的年采光量最大,为最佳设计方案,而依据真空管外管设计的CPC最差。
Abstract
The angular dependence of optical efficiency of six compound parabolic concentrator (CPCs) suitable for concentrating radiation on all-glass evacuated tubes is investigated by ray-tracing method, and the annual radiation concentrating on unit length of solar tubes by means of six CPCs is estimated based on the angular dependence of optical efficiency of CPCs and solar geometry. Results show that the optical efficiency of CPC designed by “hat-shaped” absorber with a V-groove at the bottom of reflectors is higher than that of other CPCs for the case of the incidence solar rays within the acceptance angle of full CPC, otherwise less than that of other CPCs. It is concluded that the CPC designed by “ice-cream shaped” absorber is the optimal design, and the one designed by the cover tube is the most inferior solution in terms of the annual radiation concentration on the solar tube.

王进福, 唐润生. 适合于全玻璃真空管的CPC光学性能分析[J]. 中国激光, 2014, 41(s1): s116002. Wang Jinfu, Tang Runsheng. Optical Performance of CPCs Suitable for All-Glass Evacuated Tubes[J]. Chinese Journal of Lasers, 2014, 41(s1): s116002.

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