Solar energy is the most accessible renewable energy which takes over the leading position in sustainable electricity generation. Photovoltaic (PV) technology deals with direct transformation of sunlight into electricity. A proved deficiency of this technology is a significant drop in its output power due to temperature increment in PV cells. In this paper, two cooling methods of mounting fins at the back surface of PV cells and an artificial wind stream are applied and experimentally studied. Accordingly, various fin quantities are tested, with and without wind blowing of 2 km/h, and the results were compared with the conventional one. As results, it was shown that wind stream is more effective than fins. So that, the temperature reduction of 14.9 degrees C was measured when 40 fins mounted with no wind blowing, while in the case of wind blow with no fins the module temperature was reduced 24.4 degrees C. The mentioned reductions led to 2 and 4.1 enhancements in electrical efficiency, respectively. In a scaling up estimation, at the absence of wind stream, the required number of PV modules for erecting a 10-kW PV power plant is cut by 6.5-13, when 10-40 fins were used. 24 of the required number of PV modules is saved when an air of 2 km/h is constantly streams regardless of the fins mounted or not. Also, the measured experimental data were compared with some empirical relations, and an excellent agreement was noticed. Furthermore, in an entropy assessment, less entropy generation is calculated for the considered cases.
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