Weighted reciprocal of temperature, weighted thermal flux, and their applications in finite-time thermodynamics

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	Weighted reciprocal of temperature, weighted thermal flux, and their applications in finite-time thermodynamics
	Sheng, SQ ; Tu, ZC
刊名	PHYSICAL REVIEW E
	2014
卷号	89 期号:1 页码:12129
关键词	MAXIMUM POWER OUTPUT HEAT-TRANSFER LAW REFRIGERATION CYCLES SOLVABLE MODEL OPTIMAL PATHS EFFICIENCY ENGINES PERFORMANCE RATCHET SYSTEMS
ISSN号	1539-3755
通讯作者	Tu, ZC (reprint author), Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China.
英文摘要	The concepts of weighted reciprocal of temperature and weighted thermal flux are proposed for a heat engine operating between two heat baths and outputting mechanical work. With the aid of these two concepts, the generalized thermodynamic fluxes and forces can be expressed in a consistent way within the framework of irreversible thermodynamics. Then the efficiency at maximum power output for a heat engine, one of key topics in finite-time thermodynamics, is investigated on the basis of a generic model under the tight-coupling condition. The corresponding results have the same forms as those of low-dissipation heat engines [M. Esposito, R. Kawai, K. Lindenberg, and C. Van den Broeck, Phys. Rev. Lett. 105, 150603 (2010)]. The mappings from two kinds of typical heat engines, such as the low-dissipation heat engine and the Feynman ratchet, into the present generic model are constructed. The universal efficiency at maximum power output up to the quadratic order is found to be valid for a heat engine coupled symmetrically and tightly with two baths. The concepts of weighted reciprocal of temperature and weighted thermal flux are also transplanted to the optimization of refrigerators.
学科主题	Physics
收录类别	SCI
资助信息	National Natural Science Foundation of China [11322543, 11075015]
原文出处	http://dx.doi.org/10.1103/PhysRevE.89.012129
语种	英语
WOS记录号	WOS:000332166500001
公开日期	2014-04-25
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/15502]
专题	理论物理研究所_理论物理所1978-2010年知识产出
推荐引用方式 GB/T 7714	Sheng, SQ,Tu, ZC. Weighted reciprocal of temperature, weighted thermal flux, and their applications in finite-time thermodynamics[J]. PHYSICAL REVIEW E,2014,89(1):12129.
APA	Sheng, SQ,&Tu, ZC.(2014).Weighted reciprocal of temperature, weighted thermal flux, and their applications in finite-time thermodynamics.PHYSICAL REVIEW E,89(1),12129.
MLA	Sheng, SQ,et al."Weighted reciprocal of temperature, weighted thermal flux, and their applications in finite-time thermodynamics".PHYSICAL REVIEW E 89.1(2014):12129.