Endoreversible Otto engines at maximal power

Abstract

Despite its idealizations, thermodynamics has proven its power as a predictive theory for practical applications. In particular, the Curzon-Ahlborn efficiency provides a benchmark for any real engine operating at maximal power. Here we further develop the analysis of endoreversible Otto engines. For a generic class of working mediums, whose internal energy is proportional to some power of the temperature, we find that no engine can achieve the Carnot efficiency at finite power. However, we also find that for the specific example of photonic engines the efficiency at maximal power is larger than the Curzon-Ahlborn efficiency.

6 pages, 1 figure;

References in corpus (4)

• Single ion heat engine with maximum efficiency at maximum power
• Bosons Outperform Fermions -- The Thermodynamic Advantage of Symmetry
• Universal features in the efficiency of ultra hot quantum Otto engines
• Finite-time quantum Otto engine: Surpassing the quasi-static efficiency due to friction

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