Results 31 to 40 of about 49,417 (309)

Hidden symmetries and nonlinear constitutive relations for tight-coupling heat engines

open access: yesNew Journal of Physics, 2015
Typical heat engines exhibit a kind of homotypy: the heat exchanges between a cyclic heat engine and its two heat reservoirs abide by the same function type; the forward and backward flows of an autonomous heat engine also conform to the same function ...
S Q Sheng, Z C Tu
doaj   +1 more source

Performance Analysis and Optimization of a Solar Powered Stirling Engine with Heat Transfer Considerations

open access: yesEnergies, 2012
This paper investigates the optimization of the performance of a solar powered Stirling engine based on finite-time thermodynamics. Heat transference in the heat exchangers between a concentrating solar collector and the Stirling engine is studied.
Chia-En Ho, Chieh-Li Chen, Her-Terng Yau
doaj   +1 more source

Application of Stirling Engine Type Alpha Powered by the Recovery Energy on Vessels

open access: yesPolish Maritime Research, 2020
The Stirling engine is a device in which thermal energy is transformed into mechanical energy without any contact between the heat carrier and the working gas enclosed in the engine. The mentioned feature makes this type of engine very attractive for the
Kropiwnicki Jacek
doaj   +1 more source

Active Brownian heat engines [PDF]

open access: yesPhysical Review Research, 2020
26 pages, 12 ...
Viktor Holubec   +3 more
openaire   +5 more sources

Traveling-wave thermoacoustic refrigerator with curved and tapered surfaces to minimize streaming

open access: yesInvention Disclosure, 2022
The present article describes a traveling-wave thermoacoustic refrigeration system driven by a thermoacoustic heat engine. The coupled engine-refrigerator system consists of a resonator tube, which the thermoacoustic engine and thermoacoustic ...
Mohsen Bahrami, Fathollah Ommi
doaj   +1 more source

Algorithmic quantum heat engines [PDF]

open access: yesPhysical Review E, 2019
We suggest alternative quantum Otto engines, using heat bath algorithmic cooling with a partner pairing algorithm instead of isochoric cooling and using quantum swap operations instead of quantum adiabatic processes. Liquid state nuclear magnetic resonance systems in a single entropy sink are treated as working fluids.
Emre Köse   +4 more
openaire   +4 more sources

Underdamped active Brownian heat engine [PDF]

open access: yesPhysical Review E, 2020
6 pages, 3 figures, Accepted Phys. Rev. E (Rapid Communications) (2020)
Viktor Holubec, Rahul Marathe
openaire   +3 more sources

Quantum Optomechanical Heat Engine [PDF]

open access: yesPhysical Review Letters, 2014
We investigate theoretically a quantum optomechanical realization of a heat engine. In a generic optomechanical arrangement the optomechanical coupling between the cavity field and the oscillating end-mirror results in polariton normal mode excitations whose character depends on the pump detuning and the coupling strength.
Zhang, Keye   +2 more
openaire   +3 more sources

Quantum-dot heat engines with irreversible heat transfer

open access: yesPhysical Review Research, 2020
We study an endoreversible quantum heat engine in which the heat transfer between the baths is mediated by two qubits. Each qubit acts as an energy filter which allows for the conversion of heat into work.
Jianying Du   +4 more
doaj   +1 more source

General Thermodynamic Properties of FRW Universe and Heat Engine

open access: yesUniverse, 2022
In this work, the Friedmann–Robertson–Walker (FRW) Universe is considered a thermodynamic system, where the cosmological constant generates the thermodynamic pressure.
Ujjal Debnath
doaj   +1 more source

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