(in lingua inglese)
The objective of this research is to cool the PV panels using the least amount of water and energy. A non-pressurized cooling system has been developed based on spraying the PV panels by water once in a while. A cooling rate model has been developed to determine how long it will take to cool the PV panels by water spraying to its operating temperature. A mathematical model has been used to determine the heating rate of the PV panels, in order to determine when to start cooling. An experimental setup has been developed to validate both models, i.e., the heating and the cooling rate models, experimentally, and to study the influence of cooling on the performance of PV panels.