Results 11 to 20 of about 1,790 (131)

Nonlinear Thermodynamic Analysis and Optimization of a Carnot Engine Cycle [PDF]

open access: goldEntropy, 2016
As part of the efforts to unify the various branches of Irreversible Thermodynamics, the proposed work reconsiders the approach of the Carnot engine taking into account the finite physical dimensions (heat transfer conductances) and the finite speed of ...
Michel Feidt   +3 more
openalex   +3 more sources

Revisiting and comparing the Carnot Cycle and the Otto Cycle

open access: diamondRevista Brasileira de Ensino de Física
The reversibility of the Carnot Cycle makes it the most efficient thermodynamic cycle to convert energy as heat into work operating between two thermal reservoirs at different temperatures.
Tiago Kroetz
openalex   +3 more sources

Improved Chambadal Model with New Optimization Results [PDF]

open access: yesEntropy
This paper presents a continuation of the Chambadal model optimization of the irreversible Carnot engine. We retrieved the results presented in the Special Issue “Carnot Cycle and Heat Engine Fundamentals and Applications II” and enriched them with new ...
Michel Feidt, Monica Costea
doaj   +2 more sources

Symmetry in thermal cycles and processes [PDF]

open access: yesiScience
Summary: Symmetry analysis is a cutting-edge research approach in physics, yet its application in macroscopic energy systems remains limited. This study demonstrates its potential to provide valuable insights for a deeper understanding and development of
Huan Guo   +5 more
doaj   +2 more sources

The thermodynamics of cognition: A mathematical treatment

open access: yesComputational and Structural Biotechnology Journal, 2021
There is a general expectation that the laws of classical physics must apply to biology, particularly the neural system. The evoked cycle represents the brain's energy/information exchange with the physical environment through stimulus.
Eva Deli   +2 more
doaj   +1 more source

Performance Analysis and Optimization for Irreversible Combined Carnot Heat Engine Working with Ideal Quantum Gases

open access: yesEntropy, 2021
An irreversible combined Carnot cycle model using ideal quantum gases as a working medium was studied by using finite-time thermodynamics. The combined cycle consisted of two Carnot sub-cycles in a cascade mode.
Lingen Chen   +3 more
doaj   +1 more source

How the Brain Becomes the Mind: Can Thermodynamics Explain the Emergence and Nature of Emotions?

open access: yesEntropy, 2022
The neural systems’ electric activities are fundamental for the phenomenology of consciousness. Sensory perception triggers an information/energy exchange with the environment, but the brain’s recurrent activations maintain a resting state with constant ...
Éva Déli   +2 more
doaj   +1 more source

What Is Psychological Spin? A Thermodynamic Framework for Emotions and Social Behavior

open access: yesPsych, 2023
One of the most puzzling questions in neuroscience is the nature of emotions and their role in consciousness. The brain’s significant energy investment in maintaining the resting state indicates its essential role as the ground state of consciousness ...
Eva K. Deli
doaj   +1 more source

Limiting Performance of the Ejector Refrigeration Cycle with Pure Working Fluids

open access: yesEntropy, 2023
An ejector refrigeration system is a promising heat-driven refrigeration technology for energy consumption. The ideal cycle of an ejector refrigeration cycle (ERC) is a compound cycle with an inverse Carnot cycle driven by a Carnot cycle. The coefficient
Jiawei Fu   +4 more
doaj   +1 more source

The Principle of Least Action for Reversible Thermodynamic Processes and Cycles

open access: yesEntropy, 2018
The principle of least action, which is usually applied to natural phenomena, can also be used in optimization problems with manual intervention. Following a brief introduction to the brachistochrone problem in classical mechanics, the principle of least
Tian Zhao, Yu-Chao Hua, Zeng-Yuan Guo
doaj   +1 more source

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