Based On The Thermal Energy Of The Vehicle Exhaust Waste Heat Recovery Study

A great deal of waste-water and waste-heat from industrial production and exhaust emission from automobiles not only waste energy but pollut environment.Converting these low-grade heat energy to electrical energy by thermoelectric generation not only conserves energy but protects environment. Therefore, thermoelectric generation techn- ology on waste heat has been attended and studied increasingly.The automobile industry is one of the pillar industries of our national economy. Energy consumption by vehicles is increasing with the development of automobile industry. Power generation using engine waste heat is an effective way to solve the energy problem and also a good way of saving energy. At present, the engine conversion efficiency of automobiles is only about 40%, up to 60% of the fuel energy is not used effectively. If 10% of these energy is used up, it will bring good social benefit and substantial economic benefit.This issue is that study on thermoelectric generation based on the recovery of aut- omobile exhaust waste heat. The main researching contents are how to improve thermo- electric conversion efficiency and heat-collecting efficiency in order to improve the ove- rall recovry utilization efficiency of exhaust waste heat. My main work is as follows:1. Simulating segmented and cascaded thermoelectric unicouples using ANSYS. The optimized results are that the efficiency of the first structure separately are 15.2%, 13.8%, 12.1% and 10.6% when hot temperatures are separately 973K, 873K, 773K and 673K while cold temperature is keeping at 298K and the efficiency of the other structure is 14.7% while hot and cold temperatures are separately 973Kand 298K.2. Simulating four different structures of fin collectors such as continuous straight fin, non-continuous straight fin, serrated fin and whorl fin. Comparing their heat collec- ting performance and pressure drop.3. Processing the collector chamber of non-continuous straight fin and cooling wa- ter tank and operating a simple test.