Results 11 to 20 of about 2,967,352 (198)

Carnot Cycles in a Harmonically Confined Ultracold Gas across Bose–Einstein Condensation [PDF]

open access: goldEntropy, 2023
Carnot cycles of samples of harmonically confined ultracold 87Rb fluids, near and across Bose–Einstein condensation (BEC), are analyzed. This is achieved through the experimental determination of the corresponding equation of state in terms of the ...
Ignacio Reyes-Ayala   +6 more
doaj   +2 more sources

Revisiting and comparing the Carnot Cycle and the Otto Cycle

open access: yesRevista 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
doaj   +2 more sources

Quantum Carnot cycle with inner friction [PDF]

open access: greenQuantum Information Processing, 2020
A single driven spin is investigated as the working substance of a six-stroke irreversible quantum Carnot cycle. The role of inner friction associated with the finite-time adiabatic transformations on the cycle efficiency and the harvested work are ...
Selçuk Çakmak, Ferdi Altintas
openalex   +3 more sources

OTEC Maximum Net Power Output Using Carnot Cycle and Application to Simplify Heat Exchanger Selection [PDF]

open access: yesEntropy (Basel), 2019
Ocean thermal energy conversion (OTEC) uses the natural thermal gradient in the sea. It has been investigated to make it competitive with conventional power plants, as it has huge potential and can produce energy steadily throughout the year.
Fontaine K, Yasunaga T, Ikegami Y.
europepmc   +2 more sources

Entropy, Carnot Cycle and Information Theory, Part 2 [PDF]

open access: yesEntropy
This second part of this companion paper the Carnot cycle is analyzed trying to investigate the similarities and differences between a framework related to thermodynamics and one related to information theory. The parametric Schrodinger equations are the
Mario Martinelli
doaj   +2 more sources

Achieving Carnot efficiency in a finite-power Brownian Carnot cycle with arbitrary temperature difference [PDF]

open access: greenPhysical Review E, 2021
Achieving the Carnot efficiency at finite power is a challenging problem in heat engines due to the trade-off relation between efficiency and power that holds for general heat engines.
Keiji Miura, Yuki Izumida, K Okuda
openalex   +2 more sources

Carnot Theorem Revisited: A Critical Perspective [PDF]

open access: yesEntropy
After a brief review of Carnot’s everlasting contributions to the foundations of thermodynamics, we critically examine the consequences of the Carnot theorem, which leaves behind some lingering questions and confusion that persist even today. What is the
P. D. Gujrati
doaj   +2 more sources

Maximum power and the corresponding efficiency for a Carnot-like thermoelectric cycle based on fluctuation theorem [PDF]

open access: greenPhysical Review E, 2023
Here, we investigate the maximum power and efficiency of thermoelectric generators through devising a set of protocols for the isothermal and adiabatic processes of thermoelectricity to build a Carnot-like thermoelectric cycle, with the analysis based on
Yuchao Hua, Zeng-Yuan Guo
openalex   +3 more sources

Simulation and optimization of a Carnot battery process including a heat pump/organic Rankine cycle with considering the role of the regenerator [PDF]

open access: goldInternational Journal of Low-Carbon Technologies, 2022
The inherent nature of the renewable energies is to be intermittent. This leads to negative effects on the security and stability of the energy production system.
Dong Mei Zhao, Sun Shuyan, Hosein Alavi
openalex   +2 more sources

Hierarchical equations of motion for multiple baths (HEOM-MB) and their application to Carnot cycle [PDF]

open access: greenJournal of Chemical Physics
We have developed a computer code for the thermodynamic hierarchical equations of motion derived from a spin subsystem coupled to multiple Drude baths at different temperatures, which are connected to or disconnected from the subsystem as a function of ...
Shoki Koyanagi, Yoshitaka Tanimura
openalex   +3 more sources

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