Geometric Heat Engines Featuring Power that Grows with Efficiency

O. Raz, Y. Subaşl, R. Pugatch

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

Thermodynamics places a limit on the efficiency of heat engines, but not on their output power or on how the power and efficiency change with the engine's cycle time. In this Letter, we develop a geometrical description of the power and efficiency as a function of the cycle time, applicable to an important class of heat engine models. This geometrical description is used to design engine protocols that attain both the maximal power and maximal efficiency at the fast driving limit. Furthermore, using this method, we also prove that no protocol can exactly attain the Carnot efficiency at nonzero power.

Original languageEnglish
Article number160601
JournalPhysical Review Letters
Volume116
Issue number16
DOIs
StatePublished - 21 Apr 2016
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (all)

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