A design of a liquid cooling thermoelectric generator system for the exhaust systems of internal combustion engines and experimental study on the effect of refrigerant fluid quantity on recovery performance

Thermoelectric generators (TEG) are an important alternative to the recovery of waste heat in the exhaust system of an internal combustion engine. In this study, a liquid-cooled thermoelectric generator system for waste heat recovery in exhaust systems of internal combustion engines was designed and the effect of the amount of refrigerant on the recovery system was experimentally investigated. The increase in the amount of refrigerant increases the temperature difference between the module surfaces In the recovery system using four TEG modules, at TH=350 °C and flow rates of 0.75, 1, 1.25 l/min flow rate 9.38, 10.05, 10.63 V unloaded voltage and 1.7, 1.97, 2.16 W power were obtained respectively