微型层式热电模块制冷特性研究  

Study on Refrigeration Characteristics of Layered Micro-Thermoelectric Module

作　　者：张文帅 申利梅[1] 涂志龙 姚雨 陈焕新[1] ZHANG Wen-Shuai;SHEN Li-Mei;TU Zhi-Long;YAO Yu;CHEN Huan-Xin(Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]华中科技大学能源与动力工程学院,武汉430074

出　　处：《工程热物理学报》2020年第3期526-532,共7页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.51506060)。

摘　　要：本文建立了微型层式热电模块的仿真模型,讨论了不同的层数、层厚度,层导热系数对层式热电模块制冷效果的影响。研究发现:二层热电臂结构最优,冷、热端热电臂导热系数梯度越大,制冷效果越好,且热电臂厚度在不同导热系数梯度下存在最优值。另外,在微型层式热电模块中,接触效应会显著影响其制冷性能,因此在实际设计及应用研究中不可忽略。In this paper,a simulation model of layered micro-thermoelectric module is established.The influence of layer number,layer thickness and thermal conductivity gradient of thermoelectric module is discussed.It is found that the structure of the two-layer thermoelectric arm is optimal.For the thermal conductivity of each layer,the larger the thermal conductivity gradient,the better the cooling effect.The optimal thickness of thermoelectric arm varies with thermal conductivity gradients.In addition,for the layered micro-thermoelectric module,the contact effect will significantly affect its refrigeration performance,so it can not be ignored in the actual design and application research.

关 键 词：热电 分层 导热系数 接触效应 

分 类 号：TB66[一般工业技术—制冷工程]