The Structure Of The Thermoelectric Conversion Device Design And Optimization Program

With the development of social economic, human demand for energy is increasing.Energy problems become more and more obvious.Saving source and utilizing new energy have become the focus of human scientific research. Vehicles consume large amounts of energy, and is also the main source of atmospheric pollution emission,so the saving source of the automobile industry is very important. But it is very difficult for us to promote the fueleconomy performance by improving the performance of the engine. We expect to use thermoelectric generation technology to realize engine exhaust thermoelectric conversion which can be used by electrical appliances in the vehicles or be the electric power source of the hybrid vehicles. It make very important sense for the energy conservation and emission reduction of the automotive industry.The restrictions on existing thermoelectric materials to thermoelectric generation technology is widely used in automobile industry.It must have a large thermoelectric power output and high energy density. This article studies from the structure of the thermoelectric generation. Based on the principle of heat transfer enhancement, a number of key technologies about thermoelectric generator has been discussed, such as,virtual structure design,mathematical modeling,numerical analysis of flow and heat transfer,,and so on.This paper has preceded mainly steps as follows:First,introduced the history of thermoelectricity,the current research status and future development directions.Explain the research content and meaning.And then introduced the basic principle of thermoelectricity and the materials of thermoelectricity.And giving a feasibility analysis on the thermoelectric generation technology using in automobile industry.Established the mathematical model of the thermoelectric generation, derived the conversion efficiency of thermoelectric generation, using ANSYS software calculation analysis a single thermocouple. the sensitivity of thermoelectric performance caused by contact thermal conductivity is analyzed,and the arm length l,cross-sectional area side length s dependence on the output power,conversion efficiency and thermal stress of the nuicouple is studied. Then a new type of thermoelectric module is proposed by optimizing the structural size of the nuicouple.The end analyses and compares the advantages and disadvantages of the structure of thermoelectric generation, based on the principle of heat transfer enhancement and then a new type of thermoelectric module is proposed. Calculate and analysis it through to the FLUENT soft software, the convective heat transfer decided to heat transfer speed is the key element of changes in the field, by comparing the speed of each scheme convective a more ideal structure of the thermoelectric generation.