ENDOREVERSIBLE THERMAL CYCLE WITH A NONLINEAR HEAT-TRANSFER LAW

Citation
F. Angulobrown et R. Paezhernandez, ENDOREVERSIBLE THERMAL CYCLE WITH A NONLINEAR HEAT-TRANSFER LAW, Journal of applied physics, 74(4), 1993, pp. 2216-2219
Citations number
16
Categorie Soggetti
Physics, Applied
Journal title
ISSN journal
00218979
Volume
74
Issue
4
Year of publication
1993
Pages
2216 - 2219
Database
ISI
SICI code
0021-8979(1993)74:4<2216:ETCWAN>2.0.ZU;2-G
Abstract
We calculate the efficiency of an endoreversible Carnot-type cycle in the maximum power regime by using a nonlinear heat transfer law (the s o-called Dulong and Petit's law of cooling). The results obtained from this model compare well (around 99% in some cases) with observed effi ciencies for several power plants. The considered law of cooling inclu des conductive-convective and radiative contributions to the heat exch ange between the working fluid and its surroundings. Our calculations improve considerably those obtained by means of a linear heat transfer law for the same power sources. We also analyze a nuclear power plant using an ecological optimization criterion for finite-time heat engin es.