Entransy analyses of heat-work conversion systems with inner irreversible thermodynamic cycles

doi:10.1088/1674-1056/24/12/120503

Abstract In this paper, we try to use the entransy theory to analyze the heat-work conversion systems with inner irreversible thermodynamic cycles. First, the inner irreversible thermodynamic cycles are analyzed. The influences of different inner irreversible factors on entransy loss are discussed. We find that the concept of entransy loss can be used to analyze the inner irreversible thermodynamic cycles. Then, we analyze the common heat-work conversion systems with inner irreversible thermodynamic cycles. As an example, the heat-work conversion system in which the working fluid of the thermodynamic cycles is heated and cooled by streams is analyzed. Our analyses show that larger entransy loss leads to larger output work when the total heat flow from the high temperature heat source and the corresponding equivalent temperature are fixed. Some numerical cases are presented, and the results verify the theoretical analyses. On the other hand, it is also found that larger entransy loss does not always lead to larger output work when the preconditions are not satisfied.

Keywords: entransy loss heat-work conversion inner irreversible thermodynamic cycle analyses

Received: 08 June 2015
Revised: 13 August 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 Nos. 51376101 and 51356001).

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

Cite this article:

Cheng Xue-Tao (程雪涛), Liang Xin-Gang (梁新刚) Entransy analyses of heat-work conversion systems with inner irreversible thermodynamic cycles 2015 Chin. Phys. B 24 120503

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Entransy analyses of heat-work conversion systems with inner irreversible thermodynamic cycles

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