Abstract
Waste heat is heat produced by a machine or other process that uses energy as a byproduct of doing work according to the laws of thermodynamics. The recovery of this waste energy helps to provide valuable energy sources, increase the efficiency of machines and reduce overall energy consumption. This research examines waste heat recovery from an electric generator for hot water supply for domestic uses in homes and offices. A fabricated heat recovery system consisting of an insulated steel water tank was attached to the exhaust pipe of a 3.5KVA, Elepaq generator by a copper pipe. The copper pipe carries water from the tank, winds around the generator's exhaust pipe, and then carries water back into the tank. The result from the study shows that 107J of heat is gained by 9.48kg of water per second of the experiment. The water temperature in the tank rises from 26˚C to 62.3˚C within 225 minutes. As shown by this study, recovering waste heat from the household electric generator can be achieved for domestic work such as water boiling for bathing, tea making, washing, cleaning, and baking.
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