Abstract
Sun is the most important source of renewable source of energy. During the past few decades there has been an everincreasing interest in Photovoltaic (PV) cells as it directly converts solar radiation into electricity. This paper involves the performance study of photovoltaic system under concentrated solar radiation. The main problem with the concentration solar energy is the drastic increase in temperature of the photovoltaic module resulting in a decrease in performance efficiency of the system. This problem of overheating of the system can be overcome by providing cooling which would ensure operation of the module in the optimal temperature range. Hence, the setup would function as a hybrid model serving the dual purpose of power generation while also utilizing the waste heat for water heating applications. The experimental set up consist of a novel arrangement of concentrator and reflector and the cooling system. The Hybrid Photovoltaic System was repeatedly tested under real time conditions on several days. A comparison was drawn between the results obtained from direct exposure of a standard photovoltaic module to that obtained from the hybrid system in order to better understand the improvement in performance parameters. The study shown a significant improvement of output of standard photovoltaic module under the concentrated solar radiation.
Highlights
IntroductionA Concentrating Photovoltaic Technology (CPT) makes use of this theory of improvement in output with increased irradiation under controlled temperatures
Energy is the basic requirement of any civilised society
The solar radiation gain and output from the CPV system can be increased even further, but it could not happen in this experiment due to optical losses of the reflective mirrors, shadow losses due to gaps between the strip of reflective mirrors, the efficiency drop due to the temperature rise of the solar cell and uneven intensity of solar radiation while experiment was being performed
Summary
A Concentrating Photovoltaic Technology (CPT) makes use of this theory of improvement in output with increased irradiation under controlled temperatures. The practicality of this idea has been tested but all of them made use of solar arrays designed from cells rather than an out of the market standard PV module [5,6,7,8]. At present there are many varieties of PV modules are in operation in the market and aim of the present work is to improve their output characteristics In this context a solar radiation concentrating setup and a heat sink was designed, and its impact on the performance of an off the shelf PV Module was investigated
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