Structure optimization and annual performance analysis of the lens-walled compound parabolic concentrator |
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| Authors: | Guiqiang Li Jie Ji Yuehong Su Hang Zhou Jingyong Cai |
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| Institution: | 1. Department of Thermal Science and Energy Engineering, University of Science and Technology of China, 96 Jinzhai Road, Hefei City, 230026, China;2. Institute of Sustainable Energy Technology, University of Nottingham, University Park, Nottingham NG7 2RD, UK;3. Institute of Sustainable Energy Technology, University of Nottingham, University Park, Nottingham NG7 2RD, UK |
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| Abstract: | The primary lens-walled compound parabolic concentrator (lens-walled CPC) has a significant advantage of a larger half acceptance angle as a static solar concentrator, but it also has a drawback of a low optical efficiency. In order to overcome this drawback, in this article, series of structure parameters were investigated and compared to further improve the optical efficiency within the half acceptance angle combined with the material properties. The average optical efficiencies of the improved lens-walled CPCs could achieve more than 82% within the half acceptance angle of 35?. Experiments were adopted to verify the credibility and validity of the simulation. Moreover, annual performance of the lens-walled CPCs comparison with that of the mirror CPC for Nottingham was analyzed. Results show that the improved lens-walled CPC has a higher optical performance for actual building application. |
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| Keywords: | BIPV CPC Lens-walled Optical Total internal reflection |
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