In addition, it is observed that the rear-face temperature of module without cooling is higher than the ambient temperature throughout the day with a maximum temperature of 51◦C at 1:00PM. The temperature of the module is reduced to about 31◦C at 1:00PM on using the proposed cooling and cleaning system. Due to the water flow and additional cooling by evaporation, the temperature at rear face is reduced significantly in comparison to the reference module, where there is a reduction up to 20◦C, as shown in Fig. 6.This corresponds to about 39% reduction in rear face temperature. Thus, the reduction in the temperature of the PV module due to the use of the proposed cooling and cleaning system results in an improved conversion efficiency up to 11.7% against 9% for reference module, Fig. 7.