Optimization of combined endoreversible Carnot heat engines with different objectives

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

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.

Keywords: combined endoreversible Carnot heat engines entransy theory entropy generation minimization finite time thermodynamics

Received: 06 January 2015
Revised: 26 January 2015
Accepted manuscript online:

PACS:	05.70.Ln	(Nonequilibrium and irreversible thermodynamics)
	44.90.+c	(Other topics in heat transfer)

Fund: 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).

Corresponding Authors: Cheng Xue-Tao
E-mail: chengxt02@gmail.com

About author: 05.70.Ln; 44.90.+c

Cite this article:

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

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