Analyses of an air conditioning system with entropy generation minimization and entransy theory

doi:10.1088/1674-1056/25/6/060507

中国物理B ›› 2016, Vol. 25 ›› Issue (6): 60507-060507.doi: 10.1088/1674-1056/25/6/060507

Analyses of an air conditioning system with entropy generation minimization and entransy theory

Yan-Qiu Wu(吴艳秋), Li Cai(蔡黎), Hong-Juan Wu(吴鸿娟)

Chongqing Three Gorges University, Chongqing 404100, China

收稿日期:2015-10-24 修回日期:2016-02-15 出版日期:2016-06-05 发布日期:2016-06-05
通讯作者: Yan-Qiu Wu E-mail:wuyanqiu0516@126.com
基金资助:
Project supported by the Youth Programs of Chongqing Three Gorges University, China (Grant No. 13QN18).

Analyses of an air conditioning system with entropy generation minimization and entransy theory

Yan-Qiu Wu(吴艳秋), Li Cai(蔡黎), Hong-Juan Wu(吴鸿娟)

Chongqing Three Gorges University, Chongqing 404100, China

Received:2015-10-24 Revised:2016-02-15 Online:2016-06-05 Published:2016-06-05
Contact: Yan-Qiu Wu E-mail:wuyanqiu0516@126.com
Supported by:
Project supported by the Youth Programs of Chongqing Three Gorges University, China (Grant No. 13QN18).

摘要/Abstract

摘要：

In this paper, based on the generalized heat transfer law, an air conditioning system is analyzed with the entropy generation minimization and the entransy theory. Taking the coefficient of performance (denoted as COP) and heat flow rate Q_out which is released into the room as the optimization objectives, we discuss the applicabilities of the entropy generation minimization and entransy theory to the optimizations. Five numerical cases are presented. Combining the numerical results and theoretical analyses, we can conclude that the optimization applicabilities of the two theories are conditional. If Q_out is the optimization objective, larger entransy increase rate always leads to larger Q_out, while smaller entropy generation rate does not. If we take COP as the optimization objective, neither the entropy generation minimization nor the concept of entransy increase is always applicable. Furthermore, we find that the concept of entransy dissipation is not applicable for the discussed cases.

关键词: entropy generation, entransy increase, entransy dissipation, optimization analyses, finite time thermodynamics, air conditioning system

Abstract:

Key words: entropy generation, entransy increase, entransy dissipation, optimization analyses, finite time thermodynamics, air conditioning system

中图分类号: (Nonequilibrium and irreversible thermodynamics)

05.70.Ln

吴艳秋, 蔡黎, 吴鸿娟. Analyses of an air conditioning system with entropy generation minimization and entransy theory[J]. 中国物理B, 2016, 25(6): 60507-060507.

Yan-Qiu Wu(吴艳秋), Li Cai(蔡黎), Hong-Juan Wu(吴鸿娟). Analyses of an air conditioning system with entropy generation minimization and entransy theory[J]. Chin. Phys. B, 2016, 25(6): 60507-060507.

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Analyses of an air conditioning system with entropy generation minimization and entransy theory

Analyses of an air conditioning system with entropy generation minimization and entransy theory

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