Results 21 to 30 of about 201,355 (281)

Local equilibrium and the second law of thermodynamics for irreversible systems with thermodynamic inertia [PDF]

open access: yes, 2015
Validity of local equilibrium has been questioned for non-equilibrium systems which are characterized by delayed response. In particular, for systems with non-zero thermodynamic inertia, the assumption of local equilibrium leads to negative values of the
Glavatskiy, K. S.
core   +2 more sources

A Novel Derivation of the Time Evolution of the Entropy for Macroscopic Systems in Thermal Non-Equilibrium

open access: yesEntropy, 2017
The paper discusses how the two thermodynamic properties, energy (U) and exergy (E), can be used to solve the problem of quantifying the entropy of non-equilibrium systems.
Enrico Sciubba, Federico Zullo
doaj   +1 more source

Exergy Dynamics of Systems in Thermal or Concentration Non-Equilibrium

open access: yesEntropy, 2017
The paper addresses the problem of the existence and quantification of the exergy of non-equilibrium systems. Assuming that both energy and exergy are a priori concepts, the Gibbs “available energy” A is calculated for arbitrary temperature or ...
Enrico Sciubba, Federico Zullo
doaj   +1 more source

Time and thermodynamics extended discussion on “Time & clocks: A thermodynamic approach”

open access: yesResults in Physics, 2020
In the paper, “Time & clocks: A thermodynamic approach” Lucia and Grisolia describe the connections between the physical nature of time and macroscopic irreversibility in thermodynamics.
Atanu Chatterjee, Germano Iannacchione
doaj   +1 more source

A zero emission scheme for producing energy from natural gas hydrates and conventional natural gas

open access: yesPetroleum, 2021
The global amount of energy contained in natural gas hydrates is huge, maybe as much as twice all known conventional fossil fuel resources. Unlike the worldwide distribution of conventional fossil fuels, hydrocarbons trapped in water as hydrate is also ...
Bjørn Kvamme, Navid Saeidi
doaj   +1 more source

Thermodynamics of exponential Kolmogorov–Nagumo averages

open access: yesNew Journal of Physics, 2023
This paper investigates generalized thermodynamic relationships in physical systems where relevant macroscopic variables are determined by the exponential Kolmogorov–Nagumo average.
Pablo A Morales   +2 more
doaj   +1 more source

Exploring quantum thermodynamics with NMR

open access: yesJournal of Magnetic Resonance Open, 2023
Quantum thermodynamics seeks to extend non-equilibrium stochastic thermodynamics to small quantum systems where non-classical features are essential to its description.
C.H.S. Vieira   +4 more
doaj   +1 more source

Extended irreversible thermodynamics and non-equilibrium temperature

open access: yesAtti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2008
We briefly review the concept of non-equilibrium temperature from the perspectives of extended irreversible thermodynamics, fluctuation theory, and statistical mechanics. The relations between different proposals are explicitly examined in two especially
Casas-Vazquez, Jose', Jou, David
doaj   +1 more source

Thermodynamics of cosmological horizons in $f(T)$ gravity

open access: yes, 2011
We explore thermodynamics of the apparent horizon in $f(T)$ gravity with both equilibrium and non-equilibrium descriptions. We find the same dual equilibrium/non-equilibrium formulation for $f(T)$ as for $f(R)$ gravity.
  +54 more
core   +1 more source

Non-equilibrium Thermodynamics of Spacetime

open access: yes, 2006
It has previously been shown that the Einstein equation can be derived from the requirement that the Clausius relation dS = dQ/T hold for all local acceleration horizons through each spacetime point, where dS is one quarter the horizon area change in ...
C. P. Burgess   +4 more
core   +1 more source

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