Results 41 to 50 of about 431,560 (339)

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

A single-atom heat engine [PDF]

open access: yesScience, 2016
Making a teeny tiny engine Steam locomotives, cars, and the drinking bird toy all convert heat into useful work as it cycles between two reservoirs at different temperatures. Usually, the working substance where the heat-work conversion occurs is a liquid or a gas, consisting of many molecules. Roβnagel et al.
J. Roßnagel   +7 more
openaire   +6 more sources

The Nickel Heat Engine [PDF]

open access: yesNature, 1892
IN trying Mr. Smith's experiment on the rotation of nickel (NATURE, January 28, p. 294), I find my disk has a more complex action.
openaire   +4 more sources

Quantum Thermodynamic Cycles and quantum heat engines [PDF]

open access: yes, 2006
In order to describe quantum heat engines, here we systematically study isothermal and isochoric processes for quantum thermodynamic cycles. Based on these results the quantum versions of both the Carnot heat engine and the Otto heat engine are defined ...
C. H. Bennett   +15 more
core   +2 more sources

A regenerative supercritical-subcritical dual-loop organic Rankine cycle system for energy recovery from the waste heat of internal combustion engines [PDF]

open access: yes, 2017
Organic Rankine cycle (ORC) system is considered as a promising technology for energy recovery from the waste heat rejected by internal combustion (IC) engines.
Wang, Enhua   +3 more
core   +1 more source

Conical holographic heat engines [PDF]

open access: yesClassical and Quantum Gravity, 2019
We demonstrate that adding a conical deficit to a black hole holographic heat engine increases its efficiency; in contrast, allowing a black hole to accelerate {\it decreases} efficiency if the same average conical deficit is maintained. Adding other charges to the black hole does not change this qualitative effect.
Wasif Ahmed   +4 more
openaire   +5 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

Autonomous rotor heat engine [PDF]

open access: yesPhysical Review E, 2017
13 pages, 8 figures; added a thermodynamic analysis of the engine's ...
Juan Miguel Arrazola   +4 more
openaire   +4 more sources

Holographic heat engine within the framework of massive gravity

open access: yesJournal of High Energy Physics, 2018
Heat engine models are constructed within the framework of massive gravity in this paper. For the four-dimensional charged black holes in massive gravity, it is shown that the existence of graviton mass improves the heat engine efficiency significantly ...
Jie-Xiong Mo, Gu-Qiang Li
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   +5 more sources

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