Results 61 to 70 of about 215 (180)

Quantitative and Qualitative Analysis of Main Parameters and Their Interactions in Thermoacoustic Refrigerators Performance

Applied Sciences
Efforts to optimize the design and enhance the efficiency of standing-wave thermoacoustic refrigerators (SWTARs), particularly those with parallel plate stacks, are crucial for achieving rapid and straightforward engineering estimates.
Humberto Peredo Fuentes, Carlos Amir Escalante Velázquez   +1 more
doaj   +1 more source

Influence of Material Used for the Regenerator on the Properties of a Thermoacoustic Heat Pump

Archives of Acoustics, 2013
Research in termoacoustics began with the observation of the heat transfer between gas and solids. Using this interaction the intense sound wave could be applied to create engines and heat pumps.
Bartłomiej KRUK
doaj  

Introduction to the Special Issue "ICPPP-20". [PDF]

Photoacoustics, 2021
Proskurnin M.
europepmc   +1 more source

Detecting and characterizing thermoacoustic oscillations in an industrial combustor with the spectral proper orthogonal decomposition

Applications in Energy and Combustion Science
This study demonstrates how thermoacoustic oscillations occurring at multiple frequencies in a combustor with mechanical vibrations can be detected and characterized using high-speed chemiluminescence imaging and the time-domain Spectral Proper ...
H. Gambassi, N. Sekularac, P. Ziade, M.A. Mohamad, X. Fang   +4 more
doaj   +1 more source

Numerical Solution of the Inverse Thermoacoustics Problem Using QFT and Gradient Method

Fractal and Fractional
In this research, we consider the inverse problem for the wave equation under an unknown initial condition. A generalized solution to the direct problem was formulated, its correctness was established, and the stability assessment was obtained.
Syrym E. Kasenov, Aigerim M. Tleulesova, Almas N. Temirbekov, Zholaman M. Bektemessov, Rysbike A. Asanova   +4 more
doaj   +1 more source

Nusselt and Reynolds numbers correlation for oscillatory flow of thermoacoustics over heated tube banks

International Journal of Thermofluids
The back-and-forth motion characteristic of the oscillatory flow brings complexity in predicting the heat transfer nature for thermoacoustic wave conditions. Investigating this is crucial as the flow forms the backbone for the thermodynamic cycles of its
Aw Lin Chou, Fatimah Al Zahrah Mohd Saat, Fadhilah Shikh Anuar, Ahmed Hamood   +3 more
doaj   +1 more source

Triggering in Thermoacoustics

International Journal of Spray and Combustion Dynamics, 2012
Under certain conditions, the flow in a combustion chamber can sustain large amplitude oscillations even when its steady state is linearly stable. Experimental studies show that these large oscillations can sometimes be triggered by very low levels of background noise. This theoretical paper sets out the conditions that are necessary for triggering to
openaire   +1 more source

Boundaries of thermoacoustic instability in the thermoacoustic engine with cryogenic cooling [PDF]

Journal International Academy of Refrigeration, 2020
E.A. Zinoviev, G.V. Vorotnikov, A.I. Dovgyallo, S.O. Nekrasova   +3 more
openaire   +1 more source

Operating characteristics of a standing-wave, liquid-piston thermoacoustic engine with phase-change

Results in Engineering
Low-grade heat from industrial waste streams, solar-thermal and geothermal, represents a significant energy source currently under-utilized. Phase-Change Thermoacoustic Engines, also known as Wet Thermoacoustic Engines (WTE) consist of a stack (porous ...
Ido Ben-Hertzel, Nathan Blanc, Avishai Meir, Guy Z. Ramon   +3 more
doaj   +1 more source

Investigating the synergy of blockage ratio and external cold heat exchanger in standing-wave thermoacoustic engines: An experimental study

Results in Engineering
Thermoacoustic engines (TAE) offer a promising avenue for converting low-grade heat into useable energy. Despite its simplicity in fabrication, designing thermoacoustic engines face efficiency challenges hindering their widespread adoption.
M.M. Mahlalela, M.G.K. Machesa, L.K. Tartibu   +2 more
doaj   +1 more source