Solar Refrigerator

This paper is a demonstration of an eco-friendly methodology for the implementation of solar powered thermoelectric refrigeration system. Solar energy is the most abundant and renewable source of energy in environment, and hence it is used in our paper. In conventional refrigerators, moving parts or rotating parts like compressor, expansion valve, coolants etc. are involved which leads to some vibrations and noise. Even coolants are not eco-friendly and much more costly. But in thermoelectric refrigeration system, these mechanical parts and coolants get eliminated and a thermoelectric module is used instead. Still there are many rural areas where people have to deal with electricity problems; this module will be very helpful to them as it runs on solar energy. Food items and other different required things can be stored in it. The paper is designed for implementation of solar fridge with temperature monitoring as well as controlling. This implementation uses solar panels for charging a Lead Acid Battery (12V, 7.2 Amp hrs.), a peltier thermoelectric device which when connected to battery generates cooling effect on one side and heat is generated on the other side which unwanted and is drawn off using a cooling fan of heat sink.