الفهرس 
chapter 1: IntroductionOnly 14 pages are availabe for public view
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Abstract
The effect of temperature on the output power and the electrical parameters of photovoltaic cells is negative. The efficiency of photovoltaic cells can be enhanced by reducing the cell temperature. Photovoltaic cell temperature is considered as one of the main factors that affect negatively on the output power. In this thesis, three different cooling techniques applied to determine their effects on the PV output power. The first cooling technique applied, is cooling the panel front surface using the water spray. The second technique, is cooling the panel back surface by extended fins. The third technique, is cooling the panel back surface by extended fins with fans.
The process of water-cooling of the PV cell is simulated, using MATLAB Simulink software. First, determine the equations of the equivalent circuit for PV cell, and simulate it depending on PWX 500 PV module characteristics. In addition, discuss the effect of temperature on the output power. Second, heat transfer between cooling water and PV cell studied to determine the time response of PV temperature to reach the required temperature, depending on forced convection equations.
The comparative study between the different techniques to cooling the solar panels, shows that, the DROP in PV cell temperature causes an increase in the efficiency of the cell. with which helps to increase the rate of photovoltaic cell performance and output power. The output power increased with a rate of 2.5% from the total power panel. In all techniques. The most effective technique was fins cooling compared with the other techniques which consumed power.