Results 11 to 20 of about 11,841 (159)

A Review of Recent Advances in Emerging Alternative Heating and Cooling Technologies

open access: yesEnergies, 2021
The heating and cooling industry underpins everything we do, e.g., manufacturing, commercial and residential applications. Many of these applications invariably use mechanical refrigeration technologies, consequently contributing significantly to the ...
Mubarak Ismail   +2 more
doaj   +1 more source

Thermoacoustic phased-array radiators – Theory, characteristics, and applications

open access: yesResearch and Review Journal of Nondestructive Testing, 2023
Standard non-invasive acoustic non-destructive testing (NDT) methods like testing in contact or using immersion tank arrangements are limited since the probes need to be in direct contact with the test piece or using a fluid as coupling media.
Daniel Hufschläger   +4 more
doaj   +1 more source

Transmission eigenvalues and thermoacoustic tomography [PDF]

open access: yes, 2013
The spectrum of the interior transmission problem is related to the unique determination of the acoustic properties of a body in thermoacoustic imaging. Under a non-trapping hypothesis, we show that sparsity of the interior transmission spectrum implies ...
Finch, David, Hickmann, Kyle S.
core   +1 more source

Design and Optimization of a Standing-Wave Thermoacoustic Refrigerator Using DELTAEC

open access: yesDiyala Journal of Engineering Sciences, 2023
Thermoacoustic refrigeration is one of the best alternatives to conventional refrigeration systems due to the use of inert gases such as helium or air.
Mohanad Q. Kamil   +2 more
doaj   +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

A high efficiency hybrid stirling-pulse tube cryocooler

open access: yesAIP Advances, 2015
This article presented a hybrid cryocooler which combines the room temperature displacers and the pulse tube in one system. Compared with a traditional pulse tube cryocooler, the system uses the rod-less ambient displacer to recover the expansion work ...
Xiaotao Wang   +6 more
doaj   +1 more source

Heat-driven Thermoacoustic Cooling Technology: A Review and Perspective

open access: yesZhileng xuebao, 2022
Heat-driven thermoacoustic cooling technology utilizes the acoustic power generated by a thermoacoustic engine to drive a thermoacoustic cooler to realize thermal–acoustic–cooling energy conversion.
Xu Jingyuan, Luo Ercang
doaj  

Investigation into the Strouhal numbers associated with vortex shedding from parallel-plate thermoacoustic stacks in oscillatory flow conditions [PDF]

open access: yes, 2010
This paper investigates vortex shedding processes occurring at the end of a stack of parallel plates, due to an oscillating flow induced by an acoustic standing wave.
Jaworski, Arthur J.   +2 more
core   +1 more source

Selection and experimental evaluation of low-cost porous materials for regenerator applications in thermoacoustic engines [PDF]

open access: yes, 2010
This paper aims at evaluating three selected low-cost porous materials from the point of view of their suitability as regenerator materials in the design of thermoacoustic travelling wave engines.
Abduljalil, Abdulrahman S.   +2 more
core   +1 more source

Design Of Theoretically Optimal Thermoacoustic Cooling Device

open access: yesEPJ Web of Conferences, 2016
The aim of this article is to design theoretically optimal thermoacoustic cooling device. The opening chapter gives the reader brief introduction to thermoacoustic, specializing in the thermoacoustic principle in refrigerator regime.
Tisovský Tomáš, Vít Tomáš
doaj   +1 more source

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