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Sheng, SQ; Tu, ZC; Tu, ZC (reprint author), Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China.
Weighted reciprocal of temperature, weighted thermal flux, and their applications in finite-time thermodynamics
Source PublicationPHYSICAL REVIEW E
Language英语
KeywordMaximum Power Output Heat-transfer Law Refrigeration Cycles Solvable Model Optimal Paths Efficiency Engines Performance Ratchet Systems
AbstractThe 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.
2014
ISSN1539-3755
Volume89Issue:1Pages:12129
Subject AreaPhysics
DOI10.1103/PhysRevE.89.012129
Indexed BySCI
Funding OrganizationNational Natural Science Foundation of China [11322543, 11075015] ; National Natural Science Foundation of China [11322543, 11075015] ; National Natural Science Foundation of China [11322543, 11075015] ; National Natural Science Foundation of China [11322543, 11075015]
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Cited Times:28[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/15502
Collection理论物理所科研产出_SCI期刊论文
Corresponding AuthorTu, ZC (reprint author), Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China.
Recommended Citation
GB/T 7714
Sheng, SQ,Tu, ZC,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,&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.
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