Automobile Exhaust Heat Power Generation System And The Dynamic Test

In recent years, energy shortages and environmental issues become increasingly prominent, clean new energy technologies have been gradually attracted social attention. With the development of thermoelectric generation, thermoelectric generation, as a kind of green energy technology used in a wide range and meeting the environment requirement, has been paid more and more attention. The thermoelectric generation is a kind of all static clean power generation, which converts the heat into electricity though the seebeck effect of semiconductor. The thermoelectric generation is a solid component which has no rotation and many advantages, such as compact structure, high reliability, no noise in work, no wear, no leaks, good antiradiation and flexible movement, etc. It can generate electromotive force in case of temperature difference. For the total fuel combustion heat of vehicle engine, power output accounts for 30% to 42%(diesel engine) or 25% to 30%(gasoline engine), the remaining energy discharged by the way of waste heat through the engine cooling water and tail gas accounts for 58% to 70%(diesel engine) or 70% to 75(gasoline engine). It is not only a waste of energy, but also causes a certain degree of thermal pollution of atmosphere. In this paper, for improving the vehicle energy efficiency and reducing the exhaust pollution, thermoelectric generations are arranged around the automotive exhaust tube to recovery the exhaust heat.Firstly, through the actual experimental test of several kinds of thermoelectric modules, their performance parameters in different sizes were grasped. Then the adaptive thermoelectric module was chose and the best option of the exhaust heat power system model was determined.Secondly, during the internship in the company (Guangdong Fuxin Electronic Technology Co.Ltd.), according to output performance of thermoelectric modules and understanding in its best work environment, the model of automotive exhaust waste heat power generation system was designed and processed. The output of the model was estimated by use of heat transfer model, which provides theoretical basis for the system.Finally, a test platform based on the model of power generation system was built, by which the output performance of the model was tested. Through the test, the performance and the energy conversion efficiency were obtained, and a real sense of energy recovery was achieved.