Based on the theory of finite time thermodynamics and quantum thermodynamics,a quantum Lenoir heat engine cycle model was established,and the working medium was n non-interacting fermions trapped in a one-dimensional infinite potential well.The expressions for power,dimensionless power,efficiency,and effective power of the cycle were derived.The study investigated the impact of the potential well width ratio and thermal leakage coefficient on dimensionless power,efficiency,and effective power.Results indicate that the thermal leakage coefficient does not affect dimensionless power,whereas efficiency and effective power decrease as the thermal leakage coefficient increases.At the point of maximum effective power,efficiency increases by 45.8%compared to the maximum dimensionless power,while the dimensionless power only decreases by 13.6%.Consequently,optimization based on effective power demonstrates that the system attains higher efficiency by sacrificing some power,achieving the optimal performance of the cycle.The research findings offer a novel design approach for optimizing the Lenoir heat engine.
关键词
有限时间热力学/Lenoir循环/一维无限深势阱/有效功率
Key words
finite time thermodynamics/Lenoir cycle/one-dimensional infinite potential well/effective power
维普
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