Performance evaluation and parametric optimum design of an updated thermionic-thermoelectric generator hybrid system

被引:41
|
作者
Wang, Yuan
Su, Shanhe
Liu, Tie
Su, Guozhen
Chen, Jincan [1 ]
机构
[1] Xiamen Univ, Fujian Key Lab Semicond Mat & Applicat, Xiamen 361005, Peoples R China
关键词
Thermionic-thermoelectric generator; Irreversible loss; Work function; Temperature distribution; Performance optimization; Parametric design; WASTE HEAT; ENERGY CONVERTER; POWER-GENERATION; OPTIMIZATION; ENTRANSY; MODULE; EFFICIENT; FIELD;
D O I
10.1016/j.energy.2015.06.120
中图分类号
O414.1 [热力学];
学科分类号
摘要
An updated model of the hybrid system consisting of a vacuum TIG (thermionic generator) and a multi-couple TEG (thermoelectric generator) is proposed, in which the main internal and external irreversible losses of the system are considered and the temperatures of the electrode plates of the TIG and the cold side of the TEG are determined by energy balance equations rather than some specified parameters. Analytical expressions for the power output and efficiency of the TIG, TEG, and hybrid system are derived. The effects of the voltage output and work functions of the TIG and the electric current of the TEG on the power output and efficiency are discussed. The maximum power output and efficiency of the hybrid system are numerically calculated. The optimally operating regions of main parameters are determined. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1575 / 1583
页数:9
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