TY - JOUR ID - 2396 TI - Cooling of Photovoltaic Panel Equipped with Single Circular Heat Pipe: an Experimental Study JO - Renewable Energy Research and Applications JA - RERA LA - en SN - 2717-252X AU - Eshghi, H. AU - Kahani, M. AU - Zamen, M. AD - Faculty of Mechanical and Mechatronic Engineering, Shahrood University of Technology, Shahrood, Iran. AD - Faculty of Chemical and Materials Engineering, Shahrood University of Technology, Shahrood, Iran. Y1 - 2022 PY - 2022 VL - 3 IS - 2 SP - 229 EP - 235 KW - photovoltaic panel KW - Cooling KW - heat pipe KW - Thermal analysis KW - Electrical performance DO - 10.22044/rera.2022.11523.1097 N2 - The cooling process of photovoltaic (PV) panel is one the main issue in in the field of solar systems. The temperature of solar cells increases when solar radiation and also ambient temperature increase. Increasing the cell temperature reduces the electrical output power of the panels as well as their lifetime. To solve this problem, various methods have been provided for cooling the panels. One of these methods is the application of heat pipes. In this research, a PV panel equipped with thermosyphon heat pipe is introduced. The thermosyphon was connected to the back sheet of the panel to enhance the cooling effect of the PV system. Instead of using polyvinyl fluoride polymer, unlike conventional panels, an aluminum plate was used to connect the heat pipe to the back of the panel to have better cooling. In addition, to increase the heat transfer area between heat pipe and back surface of the panel, a special groove was drilled on the aluminum plate. Three different filling ratios (25, 45 and 65%) of distilled water as the working fluid were used in thermosyphon. The best performance of the systems was obtained at 45% of filling ratio, in which, the electrical power of the PV panel equipped with heat pipe was around 3.2% better than the conventional PV panel. In this case, 6.8 °C temperature difference was observed in the water tank connected to the condenser section of heat pipe which means that 54 kJ heat was transferred to the water in the tank. UR - https://rera.shahroodut.ac.ir/article_2396.html L1 - https://rera.shahroodut.ac.ir/article_2396_768be2f515471bc838c23cc1e978d352.pdf ER -