Influence of non-uniform heat flux on performance of thermoelectric device

被引：0

作者：

Ming T. ^{[1
]}

Pan T. ^{[2
,3
]}

Wang Q. ^{[1
]}

Zhou J. ^{[1
]}

Yang W. ^{[2
]}

Gong T. ^{[2
]}

机构：

[1] School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan, 430070, Hubei

[2] School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan, 430074, Hubei

[3] Product Engineering Department, Wuhan Branch of SAIC-GM Ltd., Wuhan, 430200, Hubei

来源：

Huagong Xuebao/CIESC Journal | 2016年 / 67卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Heat conduction; Heat flux; Numerical simulation; Solar thermoelectric power generator; Uniformity;

D O I：

10.11949/j.issn.0438-1157.20151409

中图分类号：

学科分类号：

摘要：

An effective approach to increase the output power efficiency of thermoelectric devices is to increase the temperature difference between the hot and cold ends of thermoelectric devices. However, when the heat flux being imposed upon the hot end is non-uniform, the temperature distribution on the hot surface is uneven, which will influence the overall performance of the device. Based on this, a conjugate thermal to electric energy conversion mathematical model of thermoelectric devices was established to analyze the influences of thermoelectric material properties, non-uniform heat flux on the output power performance of thermoelectric device. Numerical simulation results indicated that the influence of temperature dependent material properties on the system output power cannot be neglected and the influence on the system maximum temperature difference will approach 4% when heat flux is about 4 W·cm-2. The non-uniform heat flux has significant influence on the output power of thermoelectric device. The less the uniformity of heat flux upon the hot end of thermoelectric device, the more uneven of temperature distribution on the hot end, the maximum temperature, the high temperature region and the open-circuit voltage will be. © All Right Reserved.

引用

页码：1798 / 1805

页数：7

共 21 条

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