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arXiv · 1207.3390

Coefficient of performance under optimized figure of merit in minimally nonlinear irreversible refrigerator

Y. Izumida·K. Okuda·A. Calvo Hernández·J. M. M. Roco
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Abstract

We apply the model of minimally nonlinear irreversible heat engines developed by Izumida and Okuda [EPL {\bf 97}, 10004 (2012)] to refrigerators. The model assumes extended Onsager relations including a new nonlinear term accounting for dissipation effects. The bounds for the optimized regime under an appropriate figure of merit and the tight-coupling condition are analyzed and successfully compared with those obtained previously for low-dissipation Carnot refrigerators in the finite-time thermodynamics framework. Besides, we study the bounds for the nontight-coupling case numerically. We also introduce a leaky low-dissipation Carnot refrigerator and show that it serves as an example of the minimally nonlinear irreversible refrigerator, by calculating its Onsager coefficients explicitly.

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Y. Izumida, K. Okuda, A. Calvo Hernández, J. M. M. Roco. 2013-01-25. Coefficient of performance under optimized figure of merit in minimally nonlinear irreversible refrigerator. https://doi.org/10.1209/0295-5075%2F101%2F10005

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