Effects of Receiver Parameters on Solar Flux Distribution for Triangle Cavity Receiver in the Fixed Linear-Focus Fresnel Lens Solar Concentrator

Hai Wang, Yanxin Hu, Jinqing Peng, Mengjie Song and Haoteng Li
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Hai Wang: Department of Energy and Power Engineering, School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
Yanxin Hu: Department of Energy Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
Jinqing Peng: Department of Building Environment and Equipment Engineering, School of Civil Engineering, Hunan University, Changsha 410082, China
Mengjie Song: Department of Energy and Power Engineering, School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
Haoteng Li: Department of Energy Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China

Sustainability, 2021, vol. 13, issue 11, 1-21

Abstract: The objective of the study is to investigate and optimize the solar flux uniformity of a fixed linear-focus Fresnel lens solar concentrator using a triangle cavity receiver. The effects of receiver parameters including the vertical distance from the cavity opening plane to the Fresnel lens f , receiver internal surface absorptivity ? ab , end reflection plane reflectivity ? r , solar declination angle ? and solar angle ? on the uniformity factor ( UF ) of a triangle cavity receiver were carried out. The effects of receiver parameters are evaluated with a significance test of critical factors. The results showed that the increase in f and ? would result in an increase in the UF . The average UF with f = 600, 625, 650, 675 and 700 mm, respectively, are 0.5030, 0.5858, 0.6337, 0.6576 and 0.6784 for ? in range of 0–60°. Moreover, the UF increases as ? ab decreases when other receiver parameters are constant for the ? of 0–8°. The ? r has a limited effect on the UF until ? becomes relatively larger and ? becomes relatively smaller. Furthermore, ? effects are most significant on the UF , followed by ? , f and ? ab . Setting a suitable f is the most economical and effective way to improve the UF .

Keywords: solar concentrator; cavity receiver; Fresnel lens; linear-focus; flux uniformity (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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