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The Structure of the Thermoelectric Conversion Device Design and Optimization Program

Author: XiaKai
Tutor: YuanXiaoHong；XiaWeiQun
School: Wuhan University of Technology
Course: Vehicle Engineering
Keywords: Exhaust heat Thermoelectric power generation Thermoelectric module Optimal Design
CLC: TM913
Type: Master's thesis
Year: 2011
Downloads: 278
Quote: 3
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Abstract


With the social and economic development, people's growing energy demand, energy issues have become increasingly prominent, energy conservation and the development of new energy has become the focus of the Human Sciences Research. The automotive industry need to consume a lot of energy, and is a major source of environmental pollution, energy saving automotive industry is particularly important. And simply improve engine performance to achieve energy saving and emission reduction of the car no doubt this is a very difficult task, we look forward to the use of thermoelectric power generation technology to achieve conversion of the engine exhaust heat energy, exhaust heat into electrical energy stored in the battery to power cars or power source. This car has a very important energy saving. The limitations of the existing thermoelectric materials, it is necessary to thermoelectric power generation technology is widely used in the automotive industry, then we can only start from the structure to improve the conversion efficiency of the thermoelectric generator is expected to reach the loading requirements. This article is starting from the structure of a new temperature difference between the generators were studied, according to the principle of heat transfer enhancement of thermoelectric generators theoretical analysis and mathematical modeling, computational simulation and optimization of it on this basis, looking for the limitations of existing materials with higher power output and thermal energy conversion efficiency of thermoelectric generators. The main work of this paper is as follows: first introduced the course of development of thermoelectric power generation technology, research and analysis of the thermoelectric power generation technology development trend, clearly at home and abroad in this regard, the content and significance of this study were described . Then the basic principle of thermoelectric power generation as well as the current applied to the thermoelectric power generation thermoelectric materials are introduced, and the thermoelectric power generation technology in the car above made a feasibility analysis of the arrangement position of thermoelectric generators in the car on the research . And then established a mathematical model of the thermoelectric generator, thermoelectric conversion efficiency was derived using ANSYS software have been calculated for a single thermocouple, thermocouple arm length, cross sectional length s the thermocouple block output power, thermoelectric conversion efficiency as well as the influence of thermal stress, by the thermocouple structure size optimization, a new structure size of the thermoelectric generators. Finally, analysis and comparison of the advantages and disadvantages of the the traditional thermoelectric device structure, based on the mechanism of heat transfer enhancement, a new thermoelectric device structure, the key factor is calculated and analyzed them by the FLUENT software, convective heat transfer to the heat transfer velocity field changes in speed contours by comparing the program has been an ideal thermoelectric generators structure.

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CLC: > Industrial Technology > Electrotechnical > Independent power supply technology (direct power) > Temperature difference between batteries, thermoelectric generators
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