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Model building and optical performance analysis on a novel designed compound parabolic concentrator

机译：一种新型设计的复合抛物面聚光器的模型建立和光学性能分析

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摘要

This paper proposed a novel designed compound parabolic concentrator with Synchronous improvement in original acceptance angle and concentration ratio (IAR-CPC) for circular absorber used in solar system. The surface structure model of IAR-CPC and its mathematical solutions are constructed via theory with the principle of edge-rays on concentrating sunlight. The optical paths of the established IAR-CPC on concentrating rays are verified through a laser experiment. Subsequently, the optical concentrating performance of designed IAR-CPC is analyzed and compared with standard compound parabolic concentrator (S-CPC) according to the numerical calculation and Monte Carlo Ray-Trace. It is found that the improvement ratios of IAR-CPC on average optical efficiency and original acceptance angle are 4.32% and 17.56% respectively in comparison to S-CPC under the condition with the same aperture width, absorber sizes and material characteristics. Compared with S-CPC, it has the great significance that the surface structure of IAR-CPC has preferable flexibility and better uniform of flux density distribution on absorber surface. Numerical calculations for the optical characteristics of the constructed system are performed. The results show that the total radiation collected by IAR-CPC system is higher than that of S-CPC system, and the average increase ratio is 1.57%.
机译：本文提出了一种新颖设计的复合抛物面聚光器，它与太阳能系统中的圆形吸收器的原始接收角和聚光比（IAR-CPC）同步提高。利用边缘射线原理，利用理论建立了IAR-CPC的表面结构模型及其数学解。通过激光实验验证了建立的IAR-CPC在聚光射线上的光路。随后，根据数值计算和Monte Carlo Ray-Trace，分析了设计的IAR-CPC的光学聚光性能，并与标准复合抛物面聚光器（S-CPC）进行了比较。结果表明，在相同的孔径，吸收体尺寸和材料特性的条件下，与S-CPC相比，IAR-CPC对平均光效率和原始接收角的改善率分别为4.32％和17.56％。与S-CPC相比，IAR-CPC的表面结构具有较好的柔韧性和较好的吸收体表面通量密度分布均匀性具有重要意义。对所构建系统的光学特性进行数值计算。结果表明，IAR-CPC系统收集的总辐射量高于S-CPC系统，平均增加率为1.57％。

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