Experimental study on direct-contact liquid film cooling simulated dense-array solar cells in high concentrating photovoltaic system.pdfVIP

Energy Conversion and Management 135 (2017) 55–62 Contents lists available at ScienceDirect Energy Conversion and Management journal homepage: /locate/enconman Experimental study on direct-contact liquid ?lm cooling simulated dense-array solar cells in high concentrating photovoltaic system Yiping Wang a,b,?, Xusheng Shi a, Qunwu Huang a,?, Yong Cui c, Xue Kang a a School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China b School of Architecture, Tianjin University, Tianjin 300072, China c Tianjin University Research Institute of Architectural Design, Tianjin 300073, China article info Article history: Received 18 September 2016 Received in revised form 21 December 2016 Accepted 21 December 2016 Available online 2 January 2017 Keywords: High concentrating photovoltaic Direct-contact liquid ?lm Temperature distribution Heat transfer performance abstract This paper presented a new method of cooling dense-array solar cells in high concentrating photovoltaic system by direct-contact liquid ?lm, and water was used as working ?uid. An electric heating plate was designed to simulate the dense-array solar cells in high concentrating photovoltaic system. The input power of electric heating plate simulated the concentration ratios. By heat transfer experiments, the effect of water temperatures and ?ow rates on heat transfer performance was investigated. The results indicated that: the average temperature of simulated solar cells was controlled well below 80 °C under water temperature of 30 °C and ?ow rate of 300 L/h when concentration ratio ranged between 300X and 600X. The maximum temperature difference among temperature measurement points was less than 10 °C, which showed the temperature distribution was well uniform. The heat transfer coef?cient reached up to 11.91 kW/(m2áK) under concentration ratio of 589X. To improve heat transfer performance and obtain low average temperature of dense-array solar cells, lower water temperature and suitab