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arXiv · 1606.03387

Closed-loop approach to thermodynamics

C. Goupil·H. Ouerdane·E. Herbert·G. Benenti·Y. D'Angelo·Ph. Lecoeur
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Abstract

We present the closed loop approach to linear nonequilibrium thermodynamics considering a generic heat engine dissipatively connected to two temperature baths. The system is usually quite generally characterized by two parameters: the output power $P$ and the conversion efficiency $\eta$, to which we add a third one, the working frequency $\omega$. We establish that a detailed understanding of the effects of the dissipative coupling on the energy conversion process, necessitates the knowledge of only two quantities: the system's feedback factor $\beta$ and its open-loop gain $A_{0}$, the product of which, $A_{0}\beta$, characterizes the interplay between the efficiency, the output power and the operating rate of the system. By placing thermodynamics analysis on a higher level of abstraction, the feedback loop approach provides a versatile and economical, hence a very efficient, tool for the study of \emph{any} conversion engine operation for which a feedback factor may be defined.

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BibTeXRIS

C. Goupil, H. Ouerdane, E. Herbert, G. Benenti, Y. D'Angelo, Ph. Lecoeur. 2016-06-10. Closed-loop approach to thermodynamics. https://doi.org/10.1103/physreve.94.032136

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