SET Proceedings 2978-4387 Caravel Press 10.65582/set.2010.149 2010.149 Experimental Performance of a Low-Concentrating Solar Photovoltaic /Thermal Integrated Heat Pump System XuGuoying ZhangXiaosong School of Energy and Environment, Southeast University, Nanjing, China 24082010 9 978-1-995850-04-7 1 7 24 August 2010 © 2010 Copyright WSSET 2010

A new type of low-concentrating solar photovoltaic/thermal integrated heat pump system (LCPV/T-HP) for generating electricity and heating residential water was developed. The solar photovoltaic/thermal collector with immovable parabolic reflectors concentrating the incident solar radiation into the photovoltaic modules, also acts as the evaporator of a heat pump. Refrigerant, R134a, absorbs the solar heat and evaporates inside the flow channels attached on the back of the photovoltaic modules, and then gets through a heat pump cycle to release heat to water in the condenser. The prototype was experimented in Nanjing, China. Results showed that LCPV/T-HP performed with high electrical and thermal efficiencies. The electricity generated by the LCPV/T-HP was 2.5 times that of the conventional non-concentrating PV system with the same areas of PV cells. Furthermore, the averaged coefficient of performance (COP) of the heat pump for heating water up to 50°C was 5.02 on a sunny day when the averaged ambient air temperature was 27 °C.

 solar photovoltaic/thermal heat pump solar concentrator electrical conversion efficiency 24 to 27 August 2010 9th International Conference on Sustainable Energy Technologies SET2010 9 Shanghai, China Huang, B.J., Lin, T.H., Hung, W.C., et al. 2001. Performance evaluation of solar photovoltaic /thermal systems. Solar Energy. Vol 70. No 5. pp443-448. Zondag, H.A, Vries, D.W., Helden, W.G.J., et al. 2003. The yield of different combined PV/Thermal collector designs. Solar Energy. Vol 74, pp253-269. Ji, J., Chow, T.T., He, W. 2003. Dynamic performance of hybrid photovoltaic/thermal collector wall in Hong Kong. Building and Environment. Vol 38. pp1327-1334. Thomas, H. P., Hayter, S. J., Martin R. L., et al. 2000. PV and PV/hybrid products for buildings. Proceedings of the 16th European Photovoltaic Solar Energy Conference. Glasgow, UK. Ito, S., Miura, N. 1997. Heat pump using a solar collector with photovoltaic modules on the surface. Journal of Solar Energy Engineering. Vol 119. pp147-151. Ji, J., Pei, G., Chow, T.T., et al. 2008. Experimental study of photovoltaic solar assisted heat pump system. Solar energy. Vol 82. pp43-52. Xu G.Y., Deng S.M., Zhang X.S., et al. 2009. Simulation of a photovoltaic /thermal heat pump system having a modified collector /evaporator. Solar Energy. Vol 83. pp1967-1976. Xu G.Y., Xu X.J., Zhang X.S., et al. 2007. Development and performance analysis on a photovoltaic-thermal integrated heat pump water heating system. Proceedings of ISES Solar World Congress. August. China.