Experimental study of the efficiency of solar photovoltaique panels cooled by water in arid climate Ouargla

Abstract

Algeria is investing and strengthening the field of energy transition and renewable energies through the establishment of several photovoltaic stations, most of them are in hot regions. This study made to raise the PV efficiency in hot times by changing the panel maximum temperature (PMT) and water flow rate (35°C and 45°C/ 0.17 l/s and 0.037 l/s), 35°C PMT with highest flow rate registered an electrical improvement of 10.53W which means 16.79% comparing to the non-cooling PV system and temperature reduce of 22.25°C that equal to 37.7%. It was also observed through experimentation that dust accumulation reduces the current intensity by 3.6% and the increase in temperature does not affect on it, unlike the voltage.