Bounds of efficiency at maximum power for normal-, sub- and super-dissipative Carnot-like heat engines

Details Bounds of efficiency at maximum power for normal-, sub- and super-dissipative Carnot-like heat engines Bounds of efficiency at maximum power for normal-, sub- and super-dissipative Carnot-like heat engines

2012-01-04

arxiv.org/abs/1201.0848v1

Physics

Condensed Matter

Statistical Mechanics

1 figure

Scientific paper

The Carnot-like heat engines are classified into three types (normal-, sub- and super-dissipative) according to relations between the minimum irreversible entropy production in the "isothermal" processes and the time for completing those processes. The efficiencies at maximum power of normal-, sub- and super-dissipative Carnot-like heat engines are proved to be bounded between $\eta_C/2$ and $\eta_C/(2-\eta_C)$, $\eta_C /2$ and $\eta_C$, 0 and $\eta_C/(2-\eta_C)$, respectively. These bounds are also shared by linear, sub- and super-linear irreversible Carnot-like engines [Tu and Wang, arXiv:1110.6493] although the dissipative engines and the irreversible ones are inequivalent to each other.

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