Optimization of combined endoreversible Carnot heat engines with different objectives

doi:10.1088/1674-1056/24/6/060510

中国物理B ›› 2015, Vol. 24 ›› Issue (6): 60510-060510.doi: 10.1088/1674-1056/24/6/060510

Optimization of combined endoreversible Carnot heat engines with different objectives

程雪涛, 梁新刚

Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China

收稿日期:2015-01-06 修回日期:2015-01-26 出版日期:2015-06-05 发布日期:2015-06-05
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 51376101) and the Science Fund for Creative Research Groups, China (Grant No. 51321002).

Optimization of combined endoreversible Carnot heat engines with different objectives

Cheng Xue-Tao (程雪涛), Liang Xin-Gang (梁新刚)

Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China

Received:2015-01-06 Revised:2015-01-26 Online:2015-06-05 Published:2015-06-05
Contact: Cheng Xue-Tao E-mail:chengxt02@gmail.com
About author:05.70.Ln; 44.90.+c
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 51376101) and the Science Fund for Creative Research Groups, China (Grant No. 51321002).

摘要/Abstract

摘要： Taking the output power, thermal efficiency, and thermo-economic performance as the optimization objectives, we optimize the operation parameters of a thermodynamic system with combined endoreversible Carnot heat engines in this paper. The applicabilities of the entropy generation minimization and entransy theory to the optimizations are discussed. For the discussed cases, only the entransy loss coefficient is always agreeable to the optimization of thermal efficiency. The applicabilities of the other discussed concepts to the optimizations are conditional. Different concepts and principles are needed for different optimization objectives, and the optimization principles have their application preconditions. When the preconditions are not satisfied, the principles may be not applicable.

关键词: combined endoreversible Carnot heat engines, entransy theory, entropy generation minimization, finite time thermodynamics

Abstract: Taking the output power, thermal efficiency, and thermo-economic performance as the optimization objectives, we optimize the operation parameters of a thermodynamic system with combined endoreversible Carnot heat engines in this paper. The applicabilities of the entropy generation minimization and entransy theory to the optimizations are discussed. For the discussed cases, only the entransy loss coefficient is always agreeable to the optimization of thermal efficiency. The applicabilities of the other discussed concepts to the optimizations are conditional. Different concepts and principles are needed for different optimization objectives, and the optimization principles have their application preconditions. When the preconditions are not satisfied, the principles may be not applicable.

Key words: combined endoreversible Carnot heat engines, entransy theory, entropy generation minimization, finite time thermodynamics

中图分类号: (Nonequilibrium and irreversible thermodynamics)

05.70.Ln

44.90.+c (Other topics in heat transfer)

程雪涛, 梁新刚. Optimization of combined endoreversible Carnot heat engines with different objectives[J]. 中国物理B, 2015, 24(6): 60510-060510.

Cheng Xue-Tao (程雪涛), Liang Xin-Gang (梁新刚). Optimization of combined endoreversible Carnot heat engines with different objectives[J]. Chin. Phys. B, 2015, 24(6): 60510-060510.

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Optimization of combined endoreversible Carnot heat engines with different objectives

Optimization of combined endoreversible Carnot heat engines with different objectives

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