The effect of cooling on the PV solar panels performance: An experimental approach
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Abstract
The efficiency of the solar panel is one of the characteristics that researchers seek to increase and improve. The heat of the solar panel resulting from sunlight falling on it is one of the reasons affecting the efficiency of the solar panel, which causes it to decrease. In our paper, we conducted a comparison experiment between two panels, the first without cooling and the second with cooling. We prepared the solar panel by placing tubes behind the solar panel. The tubes were copper and 5 meters long, and we crimped them so that the distance between the twisted tubes was 13 cm. We installed a temperature sensor at the water entry point and also at the water exit point. Another on the surface of the solar panel, and for the panel without cooling, the temperature was measured using a thermometer after adjusting and adjusting it. When we ran the experiment, the decrease in the temperature of the photovoltaic surfaces was about 5 degrees Celsius, while the average temperature of the solar panel with cooling was 37 degrees Celsius and without cooling, 42 degrees Celsius. The electrical power also increased by 5 watts. The system efficiency was 81%, meaning it increased by 4%. The maximum value of solar radiation was 945 w/m2, and the ambient temperature was 21°C, while the temperature of the solar panel was 45.7°C. The paper concluded that cooling has an effective effect in increasing efficiency, with greater attention to accuracy in design.
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