Maximum power from a cycling working fluid

P. Salamon, Y. B. Band, O. Kafri

Research output: Contribution to journalArticlepeer-review

67 Scopus citations


We consider the problem of obtaining maximum work from an arbitrary two degree of freedom working fluid coupled to a periodic source of pumped thermal energy f (t). The working fluid is also coupled to a heat bath of temperature Tex(t) by a conductor of conductance K. We assume that f (t) and Tex(t) are given functions of time which are piecewise continuous but are otherwise arbitrary. For periodic f (t) and Tex(t) we find that the available power is given by the variance of f+KTex over the period. Even with f 0, the result is interesting. It reduces to the Curzon-Ahlborn7 power for step function Tex(t). It also provides a measure of the power available from temperature fluctuations of the atmosphere.

Original languageEnglish
Pages (from-to)197-202
Number of pages6
JournalJournal of Applied Physics
Issue number1
StatePublished - 1 Dec 1982

ASJC Scopus subject areas

  • General Physics and Astronomy


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