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For the traditional photovoltaic (PV) system which is under a full spectral concentrating condition, only a part of solar energy can be used by solar cells for PV power generation, the other part is not effective for the PV power generation and can result in temperature of solar cells increasing. High temperature can reduce the PV transformation efficiency of solar cells. In this study, a concentration PV/thermal system with beam splitter is proposed, which is composed of a linear Fresnel lens, a concave lens, a beam splitter, solar cells and a thermal receiver. The selective transmission coating on the splitter is designed to improve the incident condition of the sunlight on the surface of solar cells and reflect the noneffective part of sunlight to the thermal receiver for recycling. Theoretical analysis of the PV/thermal system is made and the results show that compared with the traditional concentration PV system, the two-stage transmitted- reflected concentration spectral beam splitting PV/thermal system has a high efficiency.
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Keywords:
- solar energy /
- spectral concentration /
- fresnel lens /
- PV/thermal system
[1] Swanson R M 2000 Progress in Photovoltaics 8 93
[2] Luque A, Sala G, Luque-Heredia I 2006 Progress in Photovoltaics 14 413
[3] Jiang S L, Hu P, Mo S P, Chen Z S 2009 APPEEC Wuhan, March 27-31 2009 p84
[4] Jiang S L, Wang G, Hu P, Chen Z S, Jia L 2011 APPEEC Wuhan, March 25-28, 2011 p1
[5] Tikhonravov A V, Trubetskov M K, Debell G W 1996 Appl. Opt. 35 5493
[6] Tikhonravov A V, Trubetskov M K, Debell G W 2007 Appl. Opt. 46 704
[7] Tikhonravov A V 1997 Optical Thin Films V: New Developments 3133 2
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[1] Swanson R M 2000 Progress in Photovoltaics 8 93
[2] Luque A, Sala G, Luque-Heredia I 2006 Progress in Photovoltaics 14 413
[3] Jiang S L, Hu P, Mo S P, Chen Z S 2009 APPEEC Wuhan, March 27-31 2009 p84
[4] Jiang S L, Wang G, Hu P, Chen Z S, Jia L 2011 APPEEC Wuhan, March 25-28, 2011 p1
[5] Tikhonravov A V, Trubetskov M K, Debell G W 1996 Appl. Opt. 35 5493
[6] Tikhonravov A V, Trubetskov M K, Debell G W 2007 Appl. Opt. 46 704
[7] Tikhonravov A V 1997 Optical Thin Films V: New Developments 3133 2
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