Generalized irreversible heat-engine experiencing a complex heat-transfer law

被引：47

作者：

Chen, Lingen ^{[1
]}

Li, Jun ^{[1
]}

Sun, Fengrui ^{[1
]}

机构：

[1] Naval Univ Engn, Postgrad Sch, Wuhan 430033, Peoples R China

来源：

APPLIED ENERGY | 2008年 / 85卷 / 01期

关键词：

finite-time thermodynamics; entropy-generation minimization; irreversible carnot heat-engine; optimal performance; heat-transfer law;

D O I：

10.1016/j.apenergy.2007.06.001

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The fundamental optimal relation between optimal power-output and efficiency of a generalized irreversible Carnot heat-engine is derived based on a generalized heat-transfer law, including a generalized convective heat-transfer law and a generalized radiative heat-transfer law, q proportional to (Delta T-n)(m). The generalized irreversible Carnot-engine model incorporates several internal and external irreversibilities, such as heat resistance, bypass heat-leak, friction, turbulence and other undesirable irreversibility factors. The added irreversibilities, besides heat resistance, are characterized by a constant parameter and a constant coefficient. The effects of heat-transfer laws and various loss terms are analyzed. The results obtained corroborate those in the literature. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：52 / 60

页数：9

共 43 条

[1] ENDOREVERSIBLE THERMAL CYCLE WITH A NONLINEAR HEAT-TRANSFER LAW
ANGULOBROWN, F
PAEZHERNANDEZ, R
[J]. JOURNAL OF APPLIED PHYSICS, 1993, 74 (04) : 2216 - 2219
[2] [Anonymous], 1983, FINITE TIME THERMODY
[3] Entropy generation minimization: The new thermodynamics of finite-size devices and finite-time processes
Bejan, A
[J]. JOURNAL OF APPLIED PHYSICS, 1996, 79 (03) : 1191 - 1218
[4] THEORY OF HEAT TRANSFER-IRREVERSIBLE POWER-PLANTS
BEJAN, A
[J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 1988, 31 (06) : 1211 - 1219
[5] Bejan A., 1988, ADV ENG THERMODYNAMI
[6] Berry R S, 1999, THERMODYNAMIC OPTIMI
[7] Chen L, 1996, J I ENERGY, V69, P214
[8] CHEN L, 1995, SCI TECH B, V11, P128
[9] Chen L., 2004, Advances in Finite Time Thermodynamics: Analysis and Optimization, V1st
[10] Chen L.G., 1993, CHINESE SCI BULL, V35, P480

← 1 2 3 4 5 →