comparison of the effect of temperature parameter on the functionality of tracking and fixed photovoltaic systems: a case study in tehran, iran

Production of energy by renewable energy including photovoltaic systems is always dependent on the environmental and geographical parameters based on which these system are installed. temperature is one of the most important environmental parametersthat affects the performance of photovoltaic systems. the effect of this parameter on the functionality of fixed and tracking photovoltaic systems is not the same. since it is exposed to the sun from sunrise to sunset, the tracking photovoltaic system has a highertemperature on the surface of the panels than the fixed photovoltaic systems. the result of the experiments in this study showed that the temperature-induced efficiency decline rates for the fixed and tracking photovoltaic systems were more than 7.98% and 10.02%, respectively. according to calculations, the temperature-induced efficiency drop in tracking photovoltaic systems was about 25.55% higher than that in fixed photovoltaic systems. observations showed that the temperature difference was on full display at sunrise and sunset, while this diffierence was minimized around noon.