| 接触效应对小型半导体温差发电器性能的影响 |
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| 引用本文： | 李茂德,屈健,李玉东,李伟江.接触效应对小型半导体温差发电器性能的影响[J].半导体学报,2005,26(12):2440-2444. |
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| 作者姓名： | 李茂德 屈健 李玉东 李伟江 |
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| 作者单位： | 上海交通大学机械与动力工程学院，上海 200030；同济大学机械工程学院，上海 200092;同济大学机械工程学院，上海 200092;同济大学机械工程学院，上海 200092;同济大学机械工程学院，上海 200092 |
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| 摘 要： | 针对小型半导体温差(TEG)发电器中接触热阻和接触电阻的影响进行了分析研究.结果表明,接触热阻和接触电阻只在2mm以内的电偶臂长度内有明显影响;在电偶臂长度小于1mm时,输出功率和热电效率均有一个急剧上升的变化阶段;当长度超过5mm后,输出功率和热电效率均趋于定值;在冷热端温度分别为283和383K,Z=0.0024K-1、电偶臂长为2mm、接触热阻比0.2和接触电阻比0.1条件下,热电功率约为4mW/mm2,热电效率约为3.5%,而理想无接触热阻和电阻的热电效率约为4.2%.由此可知,半导体温差发电器中接触热阻和接触电阻的影响不可忽视.
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| 关 键 词： | 半导体温差发电器 接触效应 输出功率 热电效率 接触效应 体温差 温差发电器 电器性能 影响 Generator Thermoelectric Power Small Properties Effects Contact 半导体 接触电阻比 电功率 条件 热阻比 臂长 热端温度 定值 变化阶段 |
| 文章编号： | 0253-4177（2005）12-2440-05 |
| 收稿时间： | 2005-05-01 |
| 修稿时间： | 2005-08-27 |
Influence of Contact Effects on Properties of a Small Thermoelectric Power Generator |
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| Li Maode,Qu Jian,Li Yudong and Li Weijiang.Influence of Contact Effects on Properties of a Small Thermoelectric Power Generator[J].Chinese Journal of Semiconductors,2005,26(12):2440-2444. |
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| Authors: | Li Maode Qu Jian Li Yudong and Li Weijiang |
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| Affiliation: | College of Mechanical and Power Engineering,Shanghai Jiaotong University,Shanghai 200030,China;College of Mechanical Engineering,Tongji University,Shanghai 200092,China;College of Mechanical Engineering,Tongji University,Shanghai 200092,China;College of Mechanical Engineering,Tongji University,Shanghai 200092,China;College of Mechanical Engineering,Tongji University,Shanghai 200092,China |
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| Abstract: | The influence of the thermal contact resistance and electric contact resistance of a small thermoelectrical power generator (TEG) is analyzed.Results show that the thermal contact resistance and electrical contact resistance have a noticeable influence on the thermoelectric power generator when the thermal couple length is less than 2mm.The power reaches 4mW/mm2,and the efficiency reaches 3.5% when T_c=283K,T_h=383K,Z=0.0024K -1,l_c=2mm,r=0.2,and n=0.1.The maximum thermoelectric efficiency is 4.2% without thermal contact resistance or electrical contact resistance.Furthermore,the power output and efficiency increase strongly when the thermal couple length is less than 2mm,but the power output tends to decrease to a constant and the efficiency tends to increase to a constant when the thermal couple length is more than 5mm.It is shown that the influence of thermal contact resistance and electrical contact resistance of the thermoelectric power generator cannot be neglected. |
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| Keywords: | thermoelectric power generator contact effect power output thermoelectrical efficiency |
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