Abstract
The study aims to harness electrical energy from the wasted heat of refrigerator by using the temperature difference of the hot side surface and cold side surface. The use of Seebeck effect was applied to gather the said electrical energy. The system is composed of a charge controller to regulate the output of the thermoelectric generator as well as provide a direct current type of voltage. The energy that comes from the charge controller is stored thru a backup battery bank and will be used for the charging of the different low voltage devices like cellphones, tablets, etc. The charging time of the batteries going from zero percent charge to 100% charge depends on the output current of the TEG and also dependent on the temperature difference of the refrigerator. A current of 1.5mA coming from the TEG will provide 50mins charging time for the battery. The total mean parameters for the output system are the following: mean voltage = 5.82V, the mean current = 0.8695 mA, and the mean power output = 4.60165mW.
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