Performance evaluation of a nonimaging solar concentrator in terms of   optical and thermal characteristics

doi:10.1002/ep.12236

CORC > 北京大学 > 工学院

	Performance evaluation of a nonimaging solar concentrator in terms of optical and thermal characteristics
	Ustaoglu, Abid ; Okajima, Junnosuke ; Zhang, Xin-Rong ; Maruyama, Shigenao
刊名	ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY
	2016
关键词	compound parabolic concentrator involute reflector evacuated tube ray tracing uniform temperature distribution solar collector FLAT-PLATE COLLECTORS REFLECTOR DESIGN TUBE LOSSES GAPS
DOI	10.1002/ep.12236
英文摘要	A nontracking, nonimaging solar concentrator with a low-heat-loss configuration was proposed, and its optical and thermal performance was investigated. The reflector has a compound parabolic and involute shape so that the absorber is heated as uniformly as possible. To eliminate heat loss by conduction and convection, the mirror and absorber are enclosed in an evacuated glass tube. The concentrator presented here was simulated for the location of Sendai, Japan, and its acceptance angle was estimated as 23.44 degrees. A ray-tracing model was developed to evaluate its optical and thermal performance. The average optical efficiency was evaluated by a 2-D ray-tracing model, and a value of 72.7% was obtained. A thermal analysis of the absorber was conducted to evaluate the temperature uniformity. The results indicate that the temperature distribution of the absorber can be considered uniform. The thermal efficiency of the proposed solar concentrator was calculated as a function of the incidence angle and absorber temperature. With a concentration ratio of 2.51, the concentrator, even at an absorber temperature of 373 K, operates with an average efficiency of 47.8%, although the absorber was assumed to have a gray surface. The concentrator's thermal efficiency was compared with that of other solar collectors, and found to be higher than that of conventional solar collectors. (c) 2015 American Institute of Chemical Engineers Environ Prog, 35: 553-564, 2016; SCI(E); EI; ARTICLE; abidusta@gmail.com; 2; 553-564; 35
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/437632]
专题	工学院
推荐引用方式 GB/T 7714	Ustaoglu, Abid,Okajima, Junnosuke,Zhang, Xin-Rong,et al. Performance evaluation of a nonimaging solar concentrator in terms of optical and thermal characteristics[J]. ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY,2016.
APA	Ustaoglu, Abid,Okajima, Junnosuke,Zhang, Xin-Rong,&Maruyama, Shigenao.(2016).Performance evaluation of a nonimaging solar concentrator in terms of optical and thermal characteristics.ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY.
MLA	Ustaoglu, Abid,et al."Performance evaluation of a nonimaging solar concentrator in terms of optical and thermal characteristics".ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY (2016).