Performance optimization of a two-stage semiconductor thermoelectric-generator

被引：141

作者：

Chen, LG ^{[1
]}

Li, J

Sun, FR

Wu, C

机构：

[1] Naval Univ Engn, Postgrad Sch, Wuhan 430033, Peoples R China

[2] USN Acad, Dept Mech Engn, Annapolis, MD 21402 USA

来源：

APPLIED ENERGY | 2005年 / 82卷 / 04期

关键词：

two-stage semiconductor thermoelectric-generator; finite-time thermodynamics; non-equilibrium thermodynamics; optimization;

D O I：

10.1016/j.apenergy.2004.12.003

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

A model of a two-stage semiconductor thermoelectric-generator with external heat-transfer is built. Performance of the generator, assuming Newton's heat-transfer law applies, is analyzed using a combination of finite-time thermodynamics and non-equilibrium thermodynamics. The analytical equations about the power output versus the working electrical current, and the thermal efficiency versus working electrical-current are derived. For a fixed total heat-transfer surface-area for two heat-exchangers, the ratio of heat-transfer surface-area of the high-temperature side heat-exchanger to the total heat-transfer surface-area of the heat-exchangers is optimized for maximizing the power output and the thermal efficiency of the thermoelectric-generator. For a fixed total number of thermoelectric elements, the ratio of number of thermoelectric elements of the top stage to the total number of thermoelectric elements is also optimized for maximizing both the power output and the thermal efficiency of the thermoelectric-generator. The effects of design factors on the performance are analyzed. (c) 2004 Elsevier Ltd. All rights reserved.

引用

页码：300 / 312

页数：13

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