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research-article

Design and optimization of thermoelectric cooling system under natural convection condition

[+] Author and Article Information
Xiaoyuan Ying

University of Michigan-Shanghai Jiao Tong University Joint Institute, Shanghai Jiao Tong University, No.800 Dongchuan Road, Shanghai 200240, China
jessica.ying@sjtu.edu.cn

Fangming Ye

GE Grid Solution Technology Center Co., Ltd., No.500 Jiangyue Road, Shanghai 201114, China
fangming.ye@ge.com

Ruitao Liu

GE Grid Solution Technology Center Co., Ltd., No.500 Jiangyue Road, Shanghai 201114, China
raymond.liu@ge.com

Dr. Hua Bao

University of Michigan-Shanghai Jiao Tong University Joint Institute, Shanghai Jiao Tong University, No.800 Dongchuan Road, Shanghai 200240, China
hua.bao@sjtu.edu.cn

1Corresponding author.

ASME doi:10.1115/1.4039926 History: Received December 03, 2017; Revised February 23, 2018

Abstract

A design method for the thermoelectric cooling system is improved in this work based on a graphical approach. It is used to select an appropriate thermoelectric cooler (TEC) and determine the value of optimum input current. Theoretical analysis has been conducted to investigate the cooling performance of the system using the design method. Numerical simulation and experimental tests for the entire cooling system validate the calculation results, which indicates the high reliability of the theoretical design method. The temperature dependence of the heat sink resistance and the contact resistance are the major reasons for the small discrepancy. Research is then conducted based on the design method to investigate how a thermoelectric cooling system under natural convection performs, where the optimization of heat sinks at hot side of TEC is done by using the generalized correlations in previous studies. Comparison is made between the thermoelectric cooling system and the bare-heat-sink system under natural convection. Results show that the thermal resistance of the heat sink attached to TEC is critical to the cooling performance of the whole system. Besides, TEC under natural convection can perform better than the passive cooling if the heat load is not very high. The design process and results can provide a useful guidance for other thermal engineers.

Copyright (c) 2018 by ASME
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