Results 11 to 20 of about 15,563,700 (262)

(Finite-Time) Thermodynamics, Hyperbolicity, Lorentz Invariance: Study of an Example [PDF]

Entropy
Our study lies at the intersection of three fields: finite-time thermodynamics, relativity theory, and the theory of hyperbolic conservation laws.
Bernard Guy
doaj   +3 more sources

Temporal Asymmetry, Entropic Irreversibility, and Finite-Time Thermodynamics: From Parmenides–Einstein Time-Reversal Symmetry to the Heraclitan Entropic Arrow of Time

Entropy, 2012
In this paper, we combine the two universalisms of thermodynamics and dynamical systems theory to develop a dynamical system formalism for classical thermodynamics. Specifically, using a compartmental dynamical system energy flow model we develop a state-
Wassim M. Haddad
doaj   +4 more sources

Finite-time thermodynamics of fluctuations in microscopic heat engines [PDF]

Physical Review Research, 2022
Fluctuations of thermodynamic quantities become non-negligible and play an important role when the system size is small. We develop finite-time thermodynamics of fluctuations in microscopic heat engines whose environmental temperature and mechanical ...
Gentaro Watanabe, Yuki Minami
doaj   +3 more sources

Compressor Power and Efficiency Optimization: A Finite-Time Thermodynamics Approach [PDF]

Entropy
This paper presents a theoretical optimization of an endoreversible compressor under steady-state conditions. A parametric study using finite-time thermodynamic principles highlights the effect of external irreversibilities on compressor performance.
François Lanzetta
doaj   +2 more sources

Linking Optimization Success and Stability of Finite-Time Thermodynamics Heat Engines [PDF]

Entropy
In celebration of 50 years of the endoreversible Carnot-like heat engine, this work aims to link the thermodynamic success of the irreversible Carnot-like heat engine with the stability dynamics of the engine.
Julian Gonzalez-Ayala, David Pérez-Gallego, Alejandro Medina, José M. Mateos Roco, Antonio Calvo Hernández, Santiago Velasco, Fernando Angulo-Brown   +6 more
doaj   +2 more sources

Finite-Time Thermodynamics of Battery Discharging: Power–Efficiency Trade-Off and Optimization [PDF]

Entropy
Battery discharging is governed by a fundamental trade-off between output power and energy conversion efficiency due to internal dissipation. In this paper, we demonstrate that such a trade-off universally yields a parabolic envelope P∝η(1−η).
Rui-Han Liu, Yun-Qian Lin, Yu-Han Ma
doaj   +2 more sources

Efficiency Enhancement on Hybrid Power System Composed of Irreversible Solid Oxide Fuel Cell and Stirling Engine by Finite Time Thermodynamics

Energies, 2021
This paper presents the work for efficiency enhancement on a hybrid power system with an irreversible Solid Oxide Fuel Cell (SOFC) and Stirling Engine (SE) for various system design using the approach of finite-time thermodynamics.
Hsin-Yi Lai, Yi-Ting Li, Yen-Hsin Chan
doaj   +3 more sources

Superadiabatic quantum friction suppression in finite-time thermodynamics. [PDF]

Sci Adv, 2018
Friction in quantum thermodynamics results from fast driving schemes that generate nonadiabatic excitations.
Deng S, Chenu A, Diao P, Li F, Yu S, Coulamy I, Del Campo A, Wu H.   +7 more
europepmc   +6 more sources

Association of Finite-Time Thermodynamics and a Bond-Graph Approach for Modeling an Endoreversible Heat Engine

Entropy, 2012
In recent decades, the approach known as Finite-Time Thermodynamics has provided a fruitful theoretical framework for the optimization of heat engines operating between a heat source (at temperature ) and a heat sink (at temperature ).
Michel Feidt, Christelle Périlhon, Georges Descombes, Amin El-Bakkali, Yuxiang Dong   +4 more
doaj   +3 more sources

Finite-Time Thermodynamics and the Optimal Control of Chemical Syntheses   [PDF]

Zeitschrift Fur Anorganische Und Allgemeine Chemie, 2009
AbstractThe optimization of chemical processes that take place in a finite time constitutes an important application of finite‐time thermodynamics. In this study we investigate two generic optimal control problems for nucleation‐and‐growth based syntheses: the maximization of the amount of a crystalline solid phase generated via cooling from the melt ...
exaly   +3 more sources