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arXiv · 2204.08015

Optimizing Brownian heat engine with shortcut strategy

Jin-Fu Chen
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Abstract

Shortcuts to isothermality provide a powerful method to speed up quasistatic thermodynamic processes within finite-time manipulation. We employ the shortcut strategy to design and optimize Brownian heat engines, and formulate a geometric description of the energetics with the thermodynamic length. We obtain a tight and reachable bound of the output power, which is reached by the optimal protocol to vary the control parameters with a proper constant velocity of the thermodynamic length. Our results generalize the previous optimization in the highly underdamped and the overdamped regimes to the general-damped situation, and are applicable for arbitrary finite-time cycles.

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BibTeXRIS

Jin-Fu Chen. 2022-04-17. Optimizing Brownian heat engine with shortcut strategy. https://doi.org/10.1103/physreve.106.054108

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