## Abstract

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 T^{e}x(t) by a conductor of conductance K. We assume that f (t) and T^{e}x(t) are given functions of time which are piecewise continuous but are otherwise arbitrary. For periodic f (t) and T^{e}x(t) we find that the available power is given by the variance of f+KT^{e}x over the period. Even with f 0, the result is interesting. It reduces to the Curzon-Ahlborn^{7} power for step function T^{e}x(t). It also provides a measure of the power available from temperature fluctuations of the atmosphere.

Original language | English |
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Pages (from-to) | 197-202 |

Number of pages | 6 |

Journal | Journal of Applied Physics |

Volume | 53 |

Issue number | 1 |

DOIs | |

State | Published - 1 Dec 1982 |

## ASJC Scopus subject areas

- Physics and Astronomy (all)