DESIGN AND PERFORMANCE INVESTIGATION OF COMPOUND HYPERBOLIC CONCENTRATORS

Wu Jian; Zhang Gaoming; Jiang Jiaqi; Xu Zhipeng; Zhou Bin

doi:10.19912/j.0254-0096.tynxb.2025-0005

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (5) : 797-807. DOI: 10.19912/j.0254-0096.tynxb.2025-0005

DESIGN AND PERFORMANCE INVESTIGATION OF COMPOUND HYPERBOLIC CONCENTRATORS

Wu Jian, Zhang Gaoming, Jiang Jiaqi, Xu Zhipeng, Zhou Bin

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Abstract

To address the issues of high aspect ratio, small acceptance angle and non-uniform irradiance distribution in traditional compound parabolic concentrators （CPCs）, a compound hyperbolic concentrator （CHC） was designed by establishing a mathematical model of the geometric profile. The half acceptance angles and aspect ratios of the concentrators were obtained under different geometric concentration ratios. By applying the Monte Carlo ray tracing method, the optical efficiency and irradiance non-uniformity of CPC and CHC were analyzed. The results indicated that under different concentration ratios, the aspect ratio of CHC was always lower than that of CPC, and the half acceptance angle of CHC was always larger than that of CPC. When the concentration ratios were 2 and 4, the aspect ratios of CHC were 1.5 and 5.6 respectively, which were lower than those of CPC at 2.6 and 7.5. The half acceptance angles of CHC were 53.14° and 28° respectively, which were largr than those of CPC at 30° and 14.1°. The optical efficiency of CPC within the acceptance angle range was higher than that of CHC, but CHC possessed a stronger ability for continuous concentration than CPC. When the concentration ratios were 2 and 4, respectively, it was necessary to increase the reflective area of CHC by approximately 20% and 30% along the longitudinal direction to compensate for its lower optical efficiency within the CPC half acceptance angles. However, outside the CPC half acceptance angles, the wider half acceptance angles allowed the CHC to achieve similar concentrating performance to CPC. Additionally, under different incident angles, the maximum irradiance non-uniformity of CHC （0.59 and 0.58） was much lower than that of CPC （6.31 and 12.51）, suggesting a more uniform irradiance distribution on the receiving surface. On account of lower aspect ratio, wider acceptance angle and more uniform irradiance, CHC had better potential than CPC in the application of non-tracking low concentrating photovoltaic/thermal systems.

Key words

solar energy / photovoltaic thermal / compound hyperbolic concentrator / aspect ratio / acceptance angle / irradiance non-uniformity

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Wu Jian, Zhang Gaoming, Jiang Jiaqi, Xu Zhipeng, Zhou Bin. DESIGN AND PERFORMANCE INVESTIGATION OF COMPOUND HYPERBOLIC CONCENTRATORS[J]. Acta Energiae Solaris Sinica. 2026, 47(5): 797-807 https://doi.org/10.19912/j.0254-0096.tynxb.2025-0005

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