DESIGN AND OPTICAL PERFORMANCE ANALYSIS OF NOVEL LARGE APERTURE PARABOLIC TROUGH SOLAR COLLECTOR WITH SECONDARY CONCENTRATOR

Yao Pan; Lei Dongqiang; Zhang Xin; Zhang Bo; Wang Zhifeng

doi:10.19912/j.0254-0096.tynxb.2021-0055

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Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (8) : 245-252. DOI: 10.19912/j.0254-0096.tynxb.2021-0055

DESIGN AND OPTICAL PERFORMANCE ANALYSIS OF NOVEL LARGE APERTURE PARABOLIC TROUGH SOLAR COLLECTOR WITH SECONDARY CONCENTRATOR

Yao Pan^1-3, Lei Dongqiang^1-3, Zhang Xin^1-3, Zhang Bo⁴, Wang Zhifeng^1-3

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Abstract

For the large aperture and higher operating temperature of the parabolic trough solar power generation system, this paper presents a novel parabolic trough collector, which could gain higher concentrating ratio, lower heat loss and better uniformity of energy flux density. Inside the receiver, a secondary concentrator is placed with a solar selective coating on the outer surface and a reflective coating on the inner surface. With arc as the element segment, three surface types of secondary concentrator were proposed by using a novel adaptive design method. After verified the optical simulation method, the energy flux density distribution of the novel collector were simulated by using Monte Carlo ray tracing method. Various factors' effects on the optical performance of the secondary concentrator were analyzed. It is concluded that the novel collector improves the collector efficiency.

Key words

parabolic trough solar collector / secondary concentrator / optical performance / energy flux

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Yao Pan, Lei Dongqiang, Zhang Xin, Zhang Bo, Wang Zhifeng. DESIGN AND OPTICAL PERFORMANCE ANALYSIS OF NOVEL LARGE APERTURE PARABOLIC TROUGH SOLAR COLLECTOR WITH SECONDARY CONCENTRATOR[J]. Acta Energiae Solaris Sinica. 2022, 43(8): 245-252 https://doi.org/10.19912/j.0254-0096.tynxb.2021-0055

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