Results 11 to 20 of about 1,121 (166)

Thermoacoustic refrigeration [PDF]

open access: yes, 1991
A new refrigerator which uses resonant high amplitude sound in inert gases to pump heat is described and demonstrated. The phasing of the thermoacoustic cycle is provided by thermal conduction. This 'natural' phasing allows the entire refrigerator to operate with only one moving part (the loudspeaker diaphragm).
Garrett, Steven L., Hofler, Thomas J.
openaire   +4 more sources

Practical Applications of Self-Healing Polymers Beyond Mechanical and Electrical Recovery. [PDF]

open access: yesAdv Sci (Weinh)
Most studies primarily focus on the mechanical protection of objects based on the self‐recovery of wounds. However, this is the tip of the iceberg for self‐healing materials. Several researchers are beginning to explore and develop novel applications.
Kim S, Jeon H, Koo JM, Oh DX, Park J.
europepmc   +2 more sources

Torsionally Resonant Toroidal Thermoacoustic Refrigerator [PDF]

open access: yes, 1999
This invention for the production of high amplitude acoustic standing waves, which can be used for thermoacoustic heat transport purposes, describes the use of a rigid barrier in place of a piston, thereby allowing the suspension of the resonator to be external to the pressurized resonator and allowing an independent choice of motor mechanism ...
Garrett, Steven L.
openaire   +3 more sources

Energy Applications of Magnetocaloric Materials

open access: yesAdvanced Energy Materials, Volume 10, Issue 10, March 10, 2020., 2020
The quest for energy‐efficient and environmentally friendly energy conversion technologies is more urgent than ever. Magnetocaloric energy conversion is among the best available alternatives to existing technologies. This article gives an overview of energy applications of magnetocaloric materials.
Andrej Kitanovski
wiley   +1 more source

Using a side-branched volume to tune the acoustic field in a looped-tube travelling-wave thermoacoustic engine with a RC load [PDF]

open access: yes, 2017
Travelling-wave thermoacoustic engine utilises a compact acoustic network to obtain a right time-phasing between the acoustic velocity and pressure oscillations within the regenerator to force gas parcels to experience a Stirling-like thermodynamic cycle.
Al-Kayiem, Ali, Yu, Zhibin
core   +1 more source

Effects of cold‐end temperature and heat load on the cooling characteristics of a pulse tube refrigerator

open access: yesEnergy Science &Engineering, Volume 8, Issue 3, Page 731-739, March 2020., 2020
A coupling model of the PTR by using REGEN and DeltaEC is built for investigating the effects of the cold‐end temperature and cold load on the cooling efficiency. Some experiments are performed on a PTR working at different cold‐end temperature and cold load which are in good agreement with the simulation results.
Shaoshuai Liu   +5 more
wiley   +1 more source

Optimization of a thermoacoustic refrigerator with an evolutionary algorithm approach [PDF]

open access: yes, 2016
Current non-environmentally friendly refrigerants released into our environment have caused serious concern over reports of the depleting of the ozone layer and global warming.
Mohd. Ghazali, Normah   +1 more
core   +1 more source

THERMOACOUSTIC REFRIGERATOR SYSTEM PERFORMANCE USING THE PVC (POLYVINYL CHLORIDE) STACK BY POWER INPUT VARIATION

open access: yesJurnal Neutrino: Jurnal Fisika dan Aplikasinya, 2017
The thermoacoustic refrigerator is an innovative alternative and did not use substances that had a negative impact on the environment such as freon, but using air as the working substance.
Indah Kharismawati
doaj   +1 more source

Numerical investigation of porous stack for a solar-powered thermoacoustic refrigerator

open access: yesAdvances in Mechanical Engineering, 2020
This article proposes a numerical analysis for performance improvement of the stack, which represents a crucial element on the solar-powered thermoacoustic refrigerator.
Oumayma Miled   +2 more
doaj   +1 more source

Experimental Investigation on the Thermoacoustic Effect in Easily Accessible Porous Materials

open access: yesEnergies, 2020
Thermoacoustic devices are the systems which use acoustic power to transport heat through a stack in a resonance tube. The stack is one of the most important parts of the thermoacoustic systems.
Jakub Kajurek, Artur Rusowicz
doaj   +1 more source

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