There is a long-standing question as to whether and to what extent it is possible to describe nonequilibrium systems in stationary states in terms of global thermodynamic functions. The positive answers have been obtained only for isothermal systems or systems with small temperature differences. We formulate thermodynamics of the stationary states of the ideal gas subjected to heat flow in the form of the zeroth, first, and second law. Surprisingly, the formal structure of steady state thermodynamics is the same as in equilibrium thermodynamics. We rigorously show that U satisfies the following equation dU = T*dS* − pdV for a constant number of particles, irrespective of the shape of the container, boundary conditions, the size of the system, or the mode of heat transfer into the system. We calculate S* and T* explicitly. The theory selects stable nonequilibrium steady states in a multistable system of ideal gas subjected to volumetric heating. It reduces to equilibrium thermodynamics when heat flux goes to zero.
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21 November 2022
Research Article|
November 16 2022
Thermodynamics of stationary states of the ideal gas in a heat flow
Robert Hołyst
;
Robert Hołyst
a)
(Conceptualization, Supervision, Writing – original draft, Writing – review & editing)
1
Institute of Physical Chemistry, Polish Academy of Sciences
, Kasprzaka 44/52, 01-224 Warszawa, Poland
a)Author to whom correspondence should be addressed: rholyst@ichf.edu.pl
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Karol Makuch
;
Karol Makuch
b)
(Conceptualization, Investigation, Methodology, Writing – original draft, Writing – review & editing)
1
Institute of Physical Chemistry, Polish Academy of Sciences
, Kasprzaka 44/52, 01-224 Warszawa, Poland
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Anna Maciołek
;
Anna Maciołek
(Conceptualization, Investigation, Writing – original draft, Writing – review & editing)
1
Institute of Physical Chemistry, Polish Academy of Sciences
, Kasprzaka 44/52, 01-224 Warszawa, Poland
2
Max-Planck-Institut für Intelligente Systeme Stuttgart
, Heisenbergstr. 3, D-70569 Stuttgart, Germany
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Paweł J. Żuk
Paweł J. Żuk
(Conceptualization, Writing – review & editing)
1
Institute of Physical Chemistry, Polish Academy of Sciences
, Kasprzaka 44/52, 01-224 Warszawa, Poland
3
Department of Physics, Lancaster University
, Lancaster LA1 4YB, United Kingdom
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a)Author to whom correspondence should be addressed: rholyst@ichf.edu.pl
J. Chem. Phys. 157, 194108 (2022)
Article history
Received:
September 26 2022
Accepted:
November 01 2022
Citation
Robert Hołyst, Karol Makuch, Anna Maciołek, Paweł J. Żuk; Thermodynamics of stationary states of the ideal gas in a heat flow. J. Chem. Phys. 21 November 2022; 157 (19): 194108. https://doi.org/10.1063/5.0128074
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