Power and efficiency optimization of an irreversible quantum Carnot heat engine working with harmonic oscillators

Lingen Chen, Xiaowei Liu, Yanlin Ge, Feng Wu, Huijun Feng and Shaojun Xia

Physica A: Statistical Mechanics and its Applications, 2020, vol. 550, issue C

Abstract: This paper takes a quantum heat engine model as research object. The heat engine works with harmonic oscillators. The engine cycle is an irreversible Carnot cycle which has four branches (two of them are isothermal branches and others are irreversible adiabatic branches). The adiabatic process is irreversible and heat leakage is also taken into account. This paper derives power and efficiency and provides numerical illustration. At high temperature limit, the optimal performance is also analysed with numerical illustrations, and influence of the irreversibility on the performance is analysed, too.

Keywords: Finite time thermodynamics; Harmonic oscillator system; Quantum heat engine cycle; Power; Efficiency (search for similar items in EconPapers)
Date: 2020
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Citations: View citations in EconPapers (7)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:550:y:2020:i:c:s0378437120300054

DOI: 10.1016/j.physa.2020.124140

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