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Efficiency at Maximum Power Output of a Quantum-Mechanical Brayton Cycle
- Source :
- Communications in Theoretical Physics. 61:344-348
- Publication Year :
- 2014
- Publisher :
- IOP Publishing, 2014.
-
Abstract
- The performance in finite time of a quantum-mechanical Brayton engine cycle is discussed, without introduction of temperature. The engine model consists of two quantum isoenergetic and two quantum isobaric processes, and works with a single particle in a harmonic trap. Directly employing the finite-time thermodynamics, the efficiency at maximum power output is determined. Extending the harmonic trap to a power-law trap, we find that the efficiency at maximum power is independent of any parameter involved in the model, but depends on the confinement of the trapping potential.
Details
- ISSN :
- 02536102
- Volume :
- 61
- Database :
- OpenAIRE
- Journal :
- Communications in Theoretical Physics
- Accession number :
- edsair.doi...........8f0d99a39f4c00a6117c17540445b597