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The objective of the research is to minimize the amount of water and electrical energy needed for cooling of the solar panels, especially in hot arid environment. A cooling system has been developed based on water spraying of PV panels. A mathematical model has been used to determine when to start cooling of the PV panels as the temperature of the panels reaches the maximum allowable temperature (MAT). Both models, the heating rate model and the cooling rate model, are validated experimentally. Based on the heating and cooling rate models, it is found that the PV panels yield the highest output energy if cooling of the panels starts when the temperature of the PV panels reaches a maximum allowable temperature (MAT). This research work proposes PV (PHOTOVOLTAIC) water base cooling system design by using a mono-crystalline and amorphous silicon PV module as solar absorber. Water cooling of a commercial PV module configured as water cooled solar PV system by forced flow is studied. The energy and exergy performance of the water cooled solar PV system has been experimentally determined approx. at constant mass flow rates. The experimental result shows that the water cooled solar PV system has got better performance than the simple PV.

Experimental analysis of comparative temperature and exergy of crystalline (c-Si) and amorphous (a-Si) solar PV module using water cooling method