Author : Ashwani Mishra, Rajeev Arya, Nilesh Diwakar and Amit Khare

The conversion efficiency of solar panels gets reduced with increase of panel temperature Convective air-cooling is one important aspect of passive cooling technology that is done under natural flow is a non-expensive and simple method of PV panel cooling. This paper presents a design of aluminium back plate for solar PV panels with fins to cool the solar PV panels. The Experimental setup consist of two panel each of 75 watt setup is kept at the roof of Truba college of science and technology with application of natural cooling with the attachment of backed plate in which fins are welded(20 in number) and keep the optimum spacing for natural circulation of air so that boundary layer is not formed between the fins and kept the setup in real weather at ambient condition where temperature varies in range from 20ºC to 42ºC .And calculated the variation in efficiency and power with respect to panel temperature and compare it with module with modification from an overage observation taken for three month (September to November)from observation we achieve there is increase in power and efficiency on rejection of excess heat that is accumulated due to overheating Average efficiency increased by 1.97% .

Keywords: Cooling of Solar PV Panels; Convective Cooling; Fin; Heat Sink

Article published in International Journal of Current Engineering and Technology, Vol.9, No.6 (Nov/Dec 2019)