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International Journal of Photoenergy
Volume 2015 (2015), Article ID 895946, 9 pages
http://dx.doi.org/10.1155/2015/895946
Research Article

Study on the Optical Properties of Triangular Cavity Absorber for Parabolic Trough Solar Concentrator

1Solar Energy Research Institute, Yunnan Normal University, Kunming 650500, China
2School of Physics and Electronic Information, Yunnan Normal University, Kunming 650500, China
3Institute of Refrigeration and Cryogenics, MOE Key Laboratory for Power Machinery and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

Received 15 May 2015; Revised 1 August 2015; Accepted 4 August 2015

Academic Editor: Mahmoud M. El-Nahass

Copyright © 2015 Fei Chen et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A theoretical analytical method for optical properties of cavity absorber was proposed in this paper and the optical design software TracePro was used to analyze the optical properties of triangular cavity absorber. It was found that the optimal optical properties could be achieved with appropriate aperture width, depth-to-width ratio, and offset distance from focus of triangular cavity absorber. Based on the results of orthogonal experiment, the optimized triangular cavity absorber was designed. Results showed that the standard deviation of irradiance and optical efficiency of optimized designed cavity absorber were 30528 W/m2 and 89.23%, respectively. Therefore, this study could offer some valuable references for designing the parabolic trough solar concentrator in the future.