Effect of overheating on the efficiency of solar panels - study of temperature above 480C

The impact of heat exposure on solar panels can be very significant, not only in terms of energy losses but also in terms of the reliability of systems in the short and long term. The main PV performance parameter can be reduced; how low the power output is due to heat-induced efficiency degradation depends on the specific microclimate as well as the temperature response of the individual unit. In this paper, experiments are conducted in the laboratory of Adrar University on a monocrystalline panel with a power of 200 watts. Exposed to variable solar radiation at different times of the day. The voltage and current are measured through all stages of experimentation according to regular standards. The results show that the efficiency of the panel decreases between 4% to 10% when the amount of solar radiation increases from 572 W/m2 to 780W/m2. This corresponds to a rise in temperature between 35C0 and 49C0. These results give researchers a general picture of the changes that occur in the solar panel when it is in similar conditions.