Finite-time quantum Stirling heat engine
نویسندگان
چکیده
Abstract We study the thermodynamic performance of a finite-time non-regenerative quantum Stirling-like cycle used as heat engine. consider specifically case in which working substance (WS) is two-level system (TLS). The Stirling made two isochoric transformations separated by compression and an expansion stroke during WS contact with thermal reservoir. To describe these strokes we derive non-Markovian master equation allows to real-time dynamics driven open arbitrary fast driving. Following using this equation, endpoints isotherms can deviate from equilibrium states. role deviation engine addressed. found that thermodynamics depend non-trivially on different time scales at play. In particular, driving scale comparable resonance bath enhances for efficiency higher than quasistatic cycle, but still below Carnot bound. However, adding thermalization baths end compression/expansion processes one recovers conventional scenario decreases speeding up processes. addition, dependent speeds asymmetrically, suggests new freedom optimizing engines. maximum output power are obtained almost simultaneously when considered instead endpoint net extractable work always declines drive.
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ژورنال
عنوان ژورنال: New Journal of Physics
سال: 2021
ISSN: ['1367-2630']
DOI: https://doi.org/10.1088/1367-2630/abe9d7