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Development of semiconductor thermoelectric

Author: HuangZongBin
Tutor: TangChaoQun
School: Huazhong University of Science and Technology
Course: Materials Physics and Chemistry
Keywords: Thermoelectric power generation seebeck effect Thermoelectric devices Computer Aided Design
CLC: TN377
Type: Master's thesis
Year: 2011
Downloads: 88
Quote: 0
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Abstract


Energy crisis and environmental crisis, the governments strongly support the new energy development and utilization . Thermoelectric power generation project is a green energy technology, seebeck effect through the heat into electricity. This generation technology , small size, light weight, clean , stable performance , with other common energy does not have the advantage, become a hot research . This technology has been used in aerospace and military fields , the forward direction of industrial and civil popularity . This article describes several basic thermoelectric effect thermoelectric conversion efficiency and the theoretical calculation and analysis of thermoelectric properties of materials affect several basic parameters : seebeck coefficient , electrical conductivity, thermal conductivity. For use at room temperature and then from the Bi 2 Te 3 Semiconductor thermoelectric materials for the study tested the columnar Bi 2 Te 3 < / sub> thermoelectric properties , to obtain the thermoelectric parameters studied. And to assist castep software to calculate the electronic structure , deepen understanding doping on thermoelectric properties of materials , found that different types of doping are able to reduce the time required electronic transition energy. Thermally excited electrons excited when the number will increase in the thermoelectric material can enhance the process of using thermoelectric properties . From the heat transport and electrical transport aspects discussed thermoelectric devices work process improvements carried out thermal conductivity materials, insulation materials , heat some modification analysis . Article of the semiconductor thermoelectric modules are tested in semiconductor thermoelectric module open circuit voltage , the voltage characteristic , the output power , and a series of the thermoelectric conversion efficiency of the thermoelectric characteristics , and summed law thermoelectric power generation performance . Also to the thermoelectric module test as a basis for preparation of the two kinds of methods based on different stacked thermoelectric devices , thermoelectric properties of the test device , the device one at the hot end temperature of 80 ℃ match the power of the output 176mW, the temperature at the hot end part two to 100 ℃, the output matching power of 160mW. Finally, to improve data collection system , designed to Altai data acquisition card based computer intelligent data acquisition system . Able to successfully capture the voltage and temperature signals. And to achieve data preservation.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Semiconductor technology > Thermoelectric devices,thermistor > Temperature difference between electrical
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