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Solar Energy Lab Report

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Abstract--Solar radiations are more during summer but solar energy power conversion is poor due to high temperature. So, the energy conversion reduces due to increase in temperature. The life time of solar cell has been reduced because of a high temperature on the surface of PV cell. The main objective of this work is to reduce the temperature and to improve the efficiency of the solar system. The technical methods used for reducing a temperature are chemical spray and PCM filling method. The antireflective chemicals like silicon dioxide, titanium dioxide and zinc oxide (SiO2-TiO2-SiO2), (SiO2-ZnO-SiO2) are coated as a double layer. A very thin film is deposited on the large area of the 156mm×156mm solar cell. By this method the reflection has been reduced and efficiency has been increased as compared to the single layer and four layers.
Keywords—Silicon dioxide, Titanium dioxide, Zinc oxide, Phase changing material, bare solar cell, solar panel, Drier box.
I. INTRODUCTION
Why solar?
Photovoltaic and solar thermal panels generate free electricity by converting sunlight to electricity by converting sunlight to electricity. The use of solar panels …show more content…

Overheating reduces the efficiency of the solar cell and panel. The maximum power output from the cell decreases as the temperature increases. This indicates that heating of PV panel can affect the PV panel efficiency. PCM method is one of the method for cooling the solar panel. The PCM contains liquid which changes the characteristic according to the heat variation during high temperature it absorbs the heat and releases them at night. The phase characteristic changes from solid to liquid and liquid to solid according to variation in the climate. It is concluded that the cooling system could solve the problem of overheating the panels do excessive solar radiation and maintain the efficiency of the panels at an acceptable

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