Abstract
Efficiency at maximum power output of irreversible heat engines has attracted a lot of interest in recent years. Curzon-Ahlborn (CA) efficiency is a well-known result in this field, given by the expression \(1 - \sqrt {{T_c}/{T_h}}\), where Tc and Th are the cold and hot reservoir temperatures. We discuss the occurence of this particularly simple and elegant formula in different models and contexts.
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Arun M. Jayannavar thanks Department of Science and Technology, India for the grant of J.C. Bose National Fellowship.
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Ramandeep Johal works on the foundations of thermodynamics, including nonequilibrium and information-theoretic aspects of thermodynamics and its extensions to the quantum regime. He is a faculty in the Department of Physical Sciences, IISER Mohali.
Arun M Jayannavar is a senior scientist at Institute of Physics, Bhubaneswar. He is interested in general condensed matter physics and emergent phenomena.
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Johal, R.S., Jayannavar, A.M. The Many Avatars of Curzon-Ahlborn Efficiency. Reson 26, 211–225 (2021). https://doi.org/10.1007/s12045-021-1120-5
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DOI: https://doi.org/10.1007/s12045-021-1120-5