The research work is design analysis of solar powered photovoltaic refrigerator. The refrigerator in view is vapor compression system employing R134a or tetra fluoro methane as working fluid. The energy source to power the circulation of the working fluid is solar energy comparable with the conventional power from the national electricity grid. The solar power modules encompass photovoltaic panel to convert solar energy to unsteady direct current, a charge controller to stabilize the unsteady direct current, a battery as storage system or power bank to store electrical energy and an inverter to convert direct (DC) to alternating current (AC). The alternating current that is produced drives the AC compressor of the PV refrigerator. Design calculations for the PV refrigerator were performed with customized MS Excel spreadsheet.Comparative analysis of the operating temperatures of the evaporator of the PV refrigerator and the conventional vapor compression system with power source from national grid was made. At time interval 0 to 25 minutes in step of 5 minutes, the temperature difference for the two versions of refrigerating systems was 20C. Hence, the two versions of refrigerating system have more or less the same coefficient of performance (COP). But, the problem is that the PV refrigerator is the best option. The reason being that PV refrigerator operates on solar energy; a renewable form of energy, emission free and more environmentally friendly.
