Utilization Heat Energy From Cooling Water Of Diesel Engine To Electrical Energy Using The Thermoelectric Generator

Abstract

This research objective is to convert heat from radiator fluid of the diesel engine to electrical energy by using the thermoelectric generator (TEG). TEG consist of 20 semiconductors and be equipped with the heat sink. Research shows that the heat of radiator fluid can be used to generate electrical energy by using TEG although the electricity produced is still small. The maximum electrical voltage generated from the use of TEG is 9.8 volts when connected in series. When connected in parallel and series-parallel than the maximum voltage generated is only 2.096 volts and 2.465 volts respectively. The maximum electric current generated by TEG when connected in series-parallel is 128.4 mA. When connected in series and parallel, the maximum electrical current generated is 108,3 mA and 68,7 mA respectively. The series circuit is the best choice for TEG because it produces the highest electrical power. TEG efficiency in this study was 5% to 7.1%. The voltage and electric current generated by the TEG will be higher if the temperature difference between the hot side and the cold side of the semiconductor is higher. Use of this TEG does not reduce the performance of the engine cooling system or radiator system.