Abstract
Photovoltaic (PV) module converts only a fraction of the incident irradiation to electricity, and the remaining is mainly absorbed into the cells raising the cell temperature as a consequence the efficiency of the cell drops. A PV-thermal (PV-T) system has been designed, fabricated, and investigated experimentally in the present work. To actively cool the PV module, a parallel array of channel with inlet and outlet manifold was built for uniform airflow distribution and connected to the back of the module. The experiments have been carried out with and without active cooling. The forced convective fan cooling provided with two types of cooling arrangement and each arrangement consists of two PV modules. In one arrangement below one panel, air channel provided which is made of conducting material and another panel is reference panel without cooling arrangement. Similarly in second case non-conducting material provided in the place of conducting material and other is same as a reference panel. The purpose of the present study is to improve the design of photovoltaic installations placed in roof applications by comparing the electrical efficiency of the PV module with and without cooling arrangement by varying the air channel duct material. This will ensure low operating temperatures which will reverse the effects produced on efficiency by high temperature. The electrical performance has also been investigated.
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