光学学报, 2020, 40 (9): 0922002, 网络出版: 2020-05-06
可改善平面接收器能流均匀性的太阳能碟式聚光器设计 下载: 1027次
Design of Solar Dish Concentrator for Improving Flux Uniformity on Planar Receiver
光学设计 太阳能 碟式聚光器 光学性能 能流均匀化 光线跟踪方法 遗传算法 optical design solar energy dish concentrator optical performance flux homogenization ray tracing method genetic algorithm
摘要
为了改善平面接收器的能流均匀性,针对抛物碟式聚光器,提出一种重新优化布置各镜面单元的改进方法,并设计了一种新型非成像碟式聚光器。建立平面接收器目标区域内能流均匀化的优化模型,联合运动累加光线跟踪方法和遗传算法优化碟式聚光器。研究优化的聚光器与抛物碟式聚光器的聚焦能量分布,分析平面接收器上局部聚光比、非均匀因子、峰值聚光比及拦截效率指标。最后讨论了新型聚光器的应用价值,并展示了优化的新型碟式聚光器在平面型金属盘管接收器上的能流均匀化效果。结果表明,非成像碟式聚光器的能流均匀化效果最优异,能将非均匀因子从3.62~4.22显著减小到0.18~0.25,峰值聚光比从24737~37245降低到1722~2055。研究结果不仅能为太阳能平面接收器能流均匀化提供一种新的方法,还能为现有抛物碟式聚光器的改进提供新的思路。
Abstract
To improve flux uniformity on a planar receiver, we propose an improved design method for a parabolic dish concentrator via the optimization of the rearrangement of each mirror unit. A new non-imaging dish concentrator is also designed. In this study, a flux homogenization optimization model is established for the target area of the planar receiver and the dish concentrator is optimized by the motion accumulation ray-tracing method combined with the genetic algorithm. Moreover, the focusing flux distribution on the optimized concentrator and parabolic dish concentrator is demonstrated, and the local concentration ratio, non-uniformity factor, peak concentration ratio, and interception efficiency on the planar receiver are investigated. Finally, the potential applications of the new concentrator are discussed and the effect of the optimized dish concentrator on the flux homogenization of the planar metal coil receiver is verified. Results show that the non-imaging dish concentrator has the best effect on flux homogenization. It can significantly reduce the non-uniformity factor from 3.62--4.22 to 0.18--0.25 and the peak concentration ratio from 24737--37245 to 1722--2055. This work provides an advanced solution for the flux homogenization of planar solar receivers and an innovative idea to improve the existing parabolic dish concentrators.
颜健, 聂笃忠, 彭佑多, 王海, 刘永祥, 田勇. 可改善平面接收器能流均匀性的太阳能碟式聚光器设计[J]. 光学学报, 2020, 40(9): 0922002. Jian Yan, Duzhong Nie, Youduo Peng, Hai Wang, Yongxiang Liu, Yong Tian. Design of Solar Dish Concentrator for Improving Flux Uniformity on Planar Receiver[J]. Acta Optica Sinica, 2020, 40(9): 0922002.