The effect of high temperature on the efficiency of solar cell, study at Aljufra-Libya

Abstract

this paper presents a study and analysis of the performance of a solar panel in practice according to the weather conditions of the city of Aljfura.  The power output from the photovoltaic cell mainly depends on the light intensity, the cell temperature, the panel’s orientation, its size and surface conditions. The temperature of solar cell has direct influence on the power output of a solar PV module. Crystalline solar cells are the main cell technology and usually come with a temperature coefficient of the maximum output power of -0.5% degree Celsius.  Generally, the rated power indicated on the module’s label is measured at 25C^º. Power losses increase with any temperature increase above 25 C^º. Most installed solar modules in hot and sunny countries reach higher temperatures than 25C^º. Libya is one of the sunny countries where the temperature easily reaches higher than 40 C^º. The climate of Aljfura is generally hot and dry in summer, autumn, and spring, however, it is cold and rare rain in winter. The operating temperature plays a key role in the photovoltaic conversion process.