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Exergetic Efficiency Optimization for an Irreversible Carnot Heat Engine

Published online by Cambridge University Press:  05 May 2011

T.-B. Chang
T.-B. Chang*
Affiliation:
Department of Mechanical Engineering, Southern Taiwan University of Technology, Tainan, Taiwan 71005, R.O.C.
*
*Associate Professor
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Abstract

In this paper, an exergetic efficiency optimization method that combines the concept of exergy and finite-time thermodynamic theory is developed to analyze an irreversible heat engine. With the total thermal conductance constraint, the analytical solutions of optimal allocation of thermal conductance and the corresponding maximum exergetic efficiency, thermal efficiency, as well as operating temperatures of hot and cold sides are obtained under a fixed overall heat supply rate. The results show that the exergetic efficiency optimization method can effectively analyze an irreversible heat engine.

Keywords

Optimal heat conductance allocationIrreversibilityExergetic efficiency
Type
Technical Note
Information
Journal of Mechanics , Volume 23 , Issue 2 , June 2007 , pp. 181 - 186
Copyright
Copyright © The Society of Theoretical and Applied Mechanics, R.O.C. 2007

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