STUDI EKSPERIMENTAL PENGGUNAAN VARIASI CAIRAN PENDINGIN PADA PEMANFAATAN TERMOELEKTRIK GENERATOR YANG DIAPLIKASIKAN PADA TUNGKU PEMBUAT ARANG

A thermoelectric generator is a small module that can convert heat energy into electricity directly. Utilization of these tools can be applied to charcoal stoves. The temperature of the furnace can cause the cold side to rise easily. Utilization in generating electricity must be accompanied by a cooling system on the cold side in order to obtain optimal results. This study aims to determine the efficiency of using coolant in a thermoelectric generator Water, radiator coolant, and oil are some examples of coolants that can be used in water blocks. This study uses a SP184827145SA Thermoelectric generator with three fluids, namely Water, Ethylene Glycol radiator coolant, and Mpx 1 Oil and uses Arduino Uno as a monitoring system with 8 W 6V lamp as load and testing time for 900 seconds. The results of the coolant found that the Mpx 1 oil has the largest T of 64.5℃ and receives 8.81 kJ of heat with an efficiency of 0.17%. Liquid water has the largest T of 71.5℃ and receives heat of 48.6 kJ with an efficiency of 0.46%, and Ethylene Glycol radiator coolant has the largest T of 82.75℃ and receives heat of 50.53 kJ with an efficiency of 0.68%. This revealed that the Ethylene Glycol radiator coolant had the highest efficiency and the oil coolant had the lowest efficiency.