In this work , the heat exchanger attached with TEGs for recovering waste heat from an automotive exhaust pipe is
analyzed. According to the agreement between the infrared experimental results and the CFD simulation results, a brass
heat exchanger with accordion shape and surface area (6 60 mm 305 mm) is selected to form the hot side. It can reduce the thermal resistance (between the exchanger and the TEMs), and obtain a relatively high surface temperature and uniform temperature distribution to improve the efficiency of the TEG.
The current study focuses on the structural optimization of the heat exchanger and the coolant system to improve the
efficiency of the vehicular exhaust gas heat. In the later study, the way of the simulation modeling and the infrared
experimental verification that has been introduced in this article needs to be combined with the heat transfer theory, to
make further structural design and optimization to improve the overall exhaust heat utilization.