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Second Law and Non-Equilibrium Entropy of Schottky Systems—Doubts and Verification–

Institut für Theoretische Physik, Technische Universität Berlin, 10623 Berlin, Germany
Entropy 2018, 20(10), 740; https://doi.org/10.3390/e20100740
Received: 15 August 2018 / Revised: 17 September 2018 / Accepted: 26 September 2018 / Published: 28 September 2018
(This article belongs to the Special Issue Second Law: Survey and Application)
Meixner’s historical remark in 1969 “... it can be shown that the concept of entropy in the absence of equilibrium is in fact not only questionable but that it cannot even be defined....” is investigated from today’s insight. Several statements—such as the three laws of phenomenological thermodynamics, the embedding theorem and the adiabatical uniqueness—are used to get rid of non-equilibrium entropy as a primitive concept. In this framework, Clausius inequality of open systems can be derived by use of the defining inequalities which establish the non-equilibrium quantities contact temperature and non-equilibrium molar entropy which allow to describe the interaction between the Schottky system and its controlling equilibrium environment. View Full-Text
Keywords: non-equilibrium entropy; schottky systems; inert partition; second law; contact temperature; entropy-free thermodynamics; defining inequalities; adiabatical uniqueness; clausius inequality of open systems non-equilibrium entropy; schottky systems; inert partition; second law; contact temperature; entropy-free thermodynamics; defining inequalities; adiabatical uniqueness; clausius inequality of open systems
MDPI and ACS Style

Muschik, W. Second Law and Non-Equilibrium Entropy of Schottky Systems—Doubts and Verification–. Entropy 2018, 20, 740.

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