热电制冷器的结构优化研究  

Research on Structural Optimization of Thermoelectric Cooler

作　　者：刘冠宇 王红梅 黄荣森 陆青青 申利梅[1] 陈焕新[1] LIU Guanyu;WANG Hongmei;HUANG Rongsen;LU Qingqing;SHEN Limei;CHEN Huanxin(School of Energy and Power Engineering,Huazhong University of Science and Technology,Wuhan 430074,Hubei,China;Hangzhou Steam Turbine Company Limited,Hangzhou 310022,Zhejiang,China)

机构地区：[1]-华中科技大学能源与动力工程学院,湖北武汉430074 [2]-杭州汽轮机股份有限公司,浙江杭州310022

出　　处：《制冷技术》2021年第1期55-61,共7页Chinese Journal of Refrigeration Technology

基　　金：国家自然科学基金(No.51506060)。

摘　　要：本文通过对热电制冷器的结构进行分析和优化,提出了一种可以提升热电制冷器性能的L形热电臂,对其各项结构参数的影响进行了仿真分析,并且建立三维模型对比了它和传统结构的性能。结果表明,相较于常见的传统结构热电臂,L形热电臂在使用传统加工工艺的情况下,可以实现近似于薄膜热电臂的性能,达到更大的冷却通量和更低的冷端温度。仿真结果表明,在热端为303.15 K定温,冷端施加30 W/cm2热负荷的条件下,L形热电臂的冷端温度比尺寸相仿的传统结构热电臂低15.33 K。同时,L形热电臂形成的热电器件在高冷端负荷、热端散热良好的条件下可以实现更好的性能,其热源温度分别较直接冷却、使用传统结构热电制冷器降低10.07 K、53.26 K。Based on the analysis and optimization of the structure of the thermoelectric(TE)cooler,an L-shaped TE leg which can improve the performance of the TE cooler is proposed.L-shaped TE leg's three-dimensional model is compared with the conventional structure,and the influence of structural parameters is simulated and analyzed.The result shows that compared with the conventional TE leg,the performance of L-shaped TE leg is more similar to the thin-film TE leg,and the L-shaped TE leg can increase the performance of the TE device.The L-shaped TE leg will achieve greater maximum cooling flux and lower cold end temperature.The simulation results show that compared with the conventional TE leg,the L-shaped TE leg of similar geometric size can increase the temperature drop of 15.33 K when the hot end is 303.15 K and the cold end is applied with a heat flow of 30 W/cm2.At the same time,the TE cooler formed by the L-shaped TE leg can achieve better performance compared with the conventional TE cooler under the condition of high load and good heat dissipation conditions.The temperature of the heat source is reduced by 10.07 K and 53.26 K respectively compared with direct cooling and using the conventional TE cooler.

关 键 词：热电制冷 结构优化 L形热电臂 高冷却通量 

分 类 号：TB611[一般工业技术—制冷工程] TQ051.5[化学工程]