Investigation of thermal contact effect on thermoelectric coolers
Investigation of thermal contact effect on thermoelectric coolers
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DOI：
10.1016/s0196-8904(02)00062-6
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发表时间：
2003-02-01
影响因子：
10.4
通讯作者：
Xuan, XC
中科院分区：
文献类型：
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作者：
Xuan, XC
陶瓷板的热阻和接触电阻的影响在热电冷却器中起着至关重要的作用，特别是在热电冷却器中。首先通过引入等效阻抗，如等效导热、等效电阻等，推导出具有熟悉形式的通用性能公式，以考虑TE冷却器的热接触效应。在此基础上，提出了两种新的计算方法，得到了温差、冷却速率和性能系数在最大值时的简化公式。将简化公式与实际TE冷却器的最大冷却性能进行了数值比较，证明了简化公式可以很好地近似于小接触热阻和不太短的热元。此外，本文还修正了前人模型中的一些错误。(C) 2002 Elsevier Science Ltd.版权所有。
The effect of the thermal and contact resistances of ceramic plates plays a vital role in thermoelectric (TE) coolers with relatively short thermoelements, especially in TE microcoolers. Through first introducing equivalent impedances, like equivalent thermal conductance, electrical resistance etc., general performance formulae with familiar forms are developed to take into account the thermal contact effect on TE coolers. Then, two new approaches are presented to obtain simplified formulae at maxima for temperature difference, cooling rate and coefficient of performance. Compared numerically with real maximum cooling performances of TE coolers, simplified formulae are proved to be good approximations at small thermal contact resistance and not-too-short thermoelements. In addition, some errors in previous investigators' models are redressed. (C) 2002 Elsevier Science Ltd. All rights reserved.