Results 11 to 20 of about 17,485 (243)
Carnot cycle for an oscillator [PDF]
European Journal of Physics, 2002 Carnot established in 1824 that the efficiency of cyclic engines operating between a hot bath at absolute temperature $T_{hot}$ and a bath at a lower temperature $T_{cold}$ cannot exceed $1-T_{cold}/T_{hot}$. We show that linear oscillators alternately in contact with hot and cold baths obey this principle in the quantum as well as in the classical ...
Arnaud, Jacques +2 more
openaire +8 more sources
Revisiting and comparing the Carnot Cycle and the Otto Cycle [PDF]
Revista Brasileira de Ensino de FísicaThe 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
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Nonlinear Thermodynamic Analysis and Optimization of a Carnot Engine Cycle [PDF]
Entropy, 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
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Improved Chambadal Model with New Optimization Results [PDF]
EntropyThis 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
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The thermodynamics of cognition: A mathematical treatment
Computational 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
Entropy, 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
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How the Brain Becomes the Mind: Can Thermodynamics Explain the Emergence and Nature of Emotions?
Entropy, 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
Ball-Milling Assisted Iron-Catalyzed Difluoromethylation Toward the Synthesis of Valuable Oxindoles. [PDF]
ChemSusChemAn iron‐catalyzed difluoroalkylation of acrylamides under ball‐milling conditions affords oxindoles in up to 85% yield. Analytical studies reveal that the apparent piezoelectric activity originates from iron leaching caused by milling assembly abrasion during the reaction process. The iron‐catalyzed process proves to be efficient with a broad substrate
Solomin V +4 more
europepmc +2 more sources
What Is Psychological Spin? A Thermodynamic Framework for Emotions and Social Behavior
Psych, 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
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Maximum power, ecological function and efficiency of an irreversible Carnot cycle. A cost and effectiveness optimization [PDF]
, 2007 In this work we include, for the Carnot cycle, irreversibilities of linear finite rate of heat transferences between the heat engine and its reservoirs, heat leak between the reservoirs and internal dissipations of the working fluid. A first optimization
Aragon-Gonzalez, G +3 more
core +3 more sources