Coupled Thermo‐mechanical Analysis Of The Automotive Exhaust Thermoelectric Power System

Car ownership in China has increased steadily, the contradictions between theincreasing energy consumption and the current situation of our country and theworld-wide energy crisis have become more and more intensifying. As the importanttechnology which can convert heat into electricity, its application on the vehicles hasattracted motor corporations and governments’ attention. The on-board thermoelectricsystem is now being the main current direction of the research energy recovery field.Based on the basic theory of the thermoelectric and thermodynamics, thethermodynamic property has a great effect on the on-board thermoelectric systemhave been proposed. Research has been focus on the subject and some results wereobtained.Analysis the effect on the thermoelectric modules’ working performance of thethermodynamic properties under the on-board environment. While using workbenchsoftware CFX computational fluid analysis module to calculate the hot end of the gastank surface temperature distribution of automobile exhaust thermoelectric powergeneration systems, and as a boundary condition of the thermodynamic couplinganalysis of automobile exhaust thermoelectric power generation system.Firstly, research conducted deformation law of the thermoelectric module, toinfer the impact of thermal power generation module clamping force deformation. Atthe same time using a single module test sets for thermal power generation moduleswork environment simulation experiments have been pressing force for thermalpower generation module performance curve and infer influence of compaction forcefor thermal power generation module performance investigated.Secondly, Thermoelectric power generation modules were deformed with hotand cold side of the contact surface normal direction distribution studies, and studiesof the temperature difference between the hot and cold side power module and thenormal direction of the contact surface contact surface deformation effects ofcompaction force changes in the law and in accordance with the laws of deformationderivation analyze its impact on the performance of thermoelectric power generationsystem. Determine the influence of the presence and absence of compaction force clamping mechanism for thermal power generation module performance.Thirdly, Thermoelectric power generation system through the establishment ofon-board test bench, the outer surface temperature distribution and thermal powergeneration module peak output power distribution system for the hot end of thethermoelectric power generation gas tank were measured to verify the simulationresults and conclusions. Meanwhile, the structure of the thermoelectric powergeneration system has been optimized compression mechanism to improve theanalysis of the thermodynamic point of view, get help to improve automobile exhaustthermoelectric power generation system operating structure performance.