Year: 2016
Type: article
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 η, to which we add a third one, the working frequency ω. We establish that a detailed understanding of the effects of the dissipative coupling on the energy conversion process requires only knowing two quantities: the system's feedback factor β and its open-loop gain A_{0}, which product A_{0}β characterizes the interplay between the efficiency, the output power, and the operating rate of the system. By raising the abstract hermodynamic analysis to a higher level, the feedback loop approach provides a versatile and economical, hence fairly efficient, tool for the study of any conversion engine operation for which a feedback factor can be defined.
Source: Physical review. E
Institutions: Centre National de la Recherche Scientifique, Laboratoire Interdisciplinaire des Énergies de Demain, Université Paris Diderot, Russian Quantum Center, Université de Caen Normandie, University of Insubria, Istituto Nazionale di Fisica Nucleare, Sezione di Milano, Laboratoire Jean-Alexandre Dieudonné, Université Paris-Sud
Language: English
Subfield: Statistical and Nonlinear Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2418540376