Effect of Exhaust Gases Temperature on the Performance of a Hybrid Heat Recovery System

The reuse or reduction of wasted heat supplies an excellent opportunity for cost saving in industrial and residential application. This paper deals with a Hybrid heat recovery system that reuses the thermal energy captured by exhaust gases to produce domestic hot water and generate electric power using thermoelectric generators (TEG). The heat recovery process is mainly affected by the temperature of exhaust gases. The effect of gases temperature on the performance of the system - water temperature and power generated - is studied including different residential applications. It shows that as the exhaust gases temperature increase the heat rate, water temperature, and power generated increases.