The thermodynamics governing 'endoreversible' engines

Details The thermodynamics governing 'endoreversible' engines The thermodynamics governing 'endoreversible' engines

2006-04-04

arxiv.org/abs/cond-mat/0604094v1

Am J Phys. 75 (2007) 169-175

Physics

Condensed Matter

Statistical Mechanics

5 pages

Scientific paper

The thermodynamics of the Curzon-Ahlborn engine, which is a prototype of endoreversible engines, is elucidated. In particular, their criterion for adiabatic equilibration is revised. The so-called irreversibility of endoreversible engines arises from the selection of the coldest reservoir for heat rejection. Rather, if the reservoirs are allowed to come into thermal and mechanical contact, a mean value results which optimizes the work output and heat uptake, and is entirely reversible. The Carnot efficiency cannot be beaten because nothing is as cold as the coldest reservoir.

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