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Titolo:
Performance comparison of an endoreversible closed variable temperature heat reservoir Brayton cycle under maximum power density and maximum power conditions
Autore:
Chen, LG; Zheng, JL; Sun, FR; Wu, CH;
Indirizzi:
Naval Univ Engn, Fac 306, Wuhan 430033, Peoples R China Naval Univ Engn Wuhan Peoples R China 430033 han 430033, Peoples R China USN Acad, Dept Mech Engn, Annapolis, MD 21402 USA USN Acad Annapolis MD USA 21402 , Dept Mech Engn, Annapolis, MD 21402 USA
Titolo Testata:
ENERGY CONVERSION AND MANAGEMENT
fascicolo: 1, volume: 43, anno: 2002,
pagine: 33 - 43
SICI:
0196-8904(200201)43:1<33:PCOAEC>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
ENTROPY GENERATION MINIMIZATION; THERMODYNAMIC OPTIMIZATION; ECOLOGICAL OPTIMIZATION; ENGINE; EFFICIENCY;
Keywords:
closed Brayton cycle; endoreversible cycle; power density; power; performance comparison;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
--discip_BC--
Citazioni:
37
Recensione:
Indirizzi per estratti:
Indirizzo: Chen, LG Naval Univ Engn, Fac 306, Wuhan 430033, Peoples R China Naval Univ Engn Wuhan Peoples R China 430033 3, Peoples R China
Citazione:
L.G. Chen et al., "Performance comparison of an endoreversible closed variable temperature heat reservoir Brayton cycle under maximum power density and maximum power conditions", ENERG CONV, 43(1), 2002, pp. 33-43

Abstract

In this paper, the power density, defined as the ratio of power output to maximum specific volume in the cycle, is taken as the objective for performance analysis of an endoreversible closed Brayton cycle coupled to variabletemperature heat reservoirs in the viewpoint of finite time thermodynamicsor entropy generation minimization. The analytical formulae about the relations between power density and pressure ratio are derived with heat resistance losses in the hot and cold side heat exchangers. The obtained results are compared with those results obtained by using the maximum power criterion. The influences of some design parameters on the maximum power density are provided by numerical examples, and the advantages and disadvantages of maximum power density design are analyzed. The power plant design with maximum power density leads to a higher efficiency and smaller size. When the heat transfer is effected ideally and the thermal capacity rates of the two heat reservoirs are infinite, the results of this paper become those obtained in recent literature. (C) 2001 Elsevier Science Ltd. All rights reserved.

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Documento generato il 01/04/20 alle ore 17:59:02