Results 161 to 170 of about 11,617 (186)

SCALING OF THERMOACOUSTIC REFRIGERATORS

AIP Conference Proceedings, 2008
The possibility of scaling-down thermoacoustic refrigerators is theor. investigated. Standing-wave systems are considered as well as traveling-wave. In the former case, a ref. system is taken that consists of a resonator tube (50 cm) with a closed end and a PVC stack (length 5 cm).
Y. Li, J. C. H. Zeegers, H. J. M. ter Brake, J. G. Weisend, John Barclay, Susan Breon, Jonathan Demko, Michael DiPirro, J. Patrick Kelley, Peter Kittel, Arkadiy Klebaner, Al Zeller, Mark Zagarola, Steven Van Sciver, Andrew Rowe, John Pfotenhauer, Tom Peterson, Jennifer Lock   +17 more
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Ultrasonic thermoacoustic energy converter

Ultrasonics, 2013
Thermoacoustic prime movers have been developed for operation in the low ultrasonic frequency range by scaling down the device size. The developed engines operate at frequencies up to 23 kHz. They are self-sustained oscillators whose dimensions scale inversely with operating frequency.
Myra, Flitcroft, Orest G, Symko
openaire   +2 more sources

rf testbed for thermoacoustic tomography

Review of Scientific Instruments, 2009
Thermoacoustic signal excitation is a function of intrinsic tissue properties and illuminating electric field. De-ionized (DI) water is a preferred acoustic coupling medium for thermoacoustics because acoustic and electromagnetic waves propagate in DI water with very little loss. We have designed a water-filled testbed propagating a controlled electric
D, Fallon, L, Yan, G W, Hanson, S K, Patch   +3 more
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Thermal Field Measurements of a Thermoacoustically Driven Thermoacoustic Refrigerator

Journal of Thermal Science and Engineering Applications, 2010
Thermoacoustic refrigerator is a device that transfers heat from a low temperature medium to a high-temperature medium by using sound energy as work input. We have designed and tested a simplified thermally driven thermoacoustic refrigerator. Our refrigerator is easy to make, uses no moving parts, and has proved to be an impressive illustration of ...
Syeda Humaira Tasnim, Roydon Andrew Fraser   +1 more
openaire   +1 more source

Experimental investigation of an adjustable thermoacoustically-driven thermoacoustic refrigerator

International Journal of Refrigeration, 2018
Abstract An experimental investigation is conducted on a new adjustable thermoacoustically-driven thermoacoustic refrigerator (TADTAR). This refrigerator comprises of a thermoacoustic engine which drives a thermoacoustic refrigerator. This study aims to demonstrate the possibility to alter the TADTAR performance through the adjustment of specific ...
A.C. Alcock, L.K. Tartibu, T.C. Jen
openaire   +1 more source

Similitude in thermoacoustics

The Journal of the Acoustical Society of America, 1993
Similitude is applied to thermoacoustics without using the acoustic approximation. The equations which are important to thermoacoustics (continuity, motion, and heat transfer) are rewritten in dimensionless form, verifying that the list of dimensionless variables obtained from similitude is complete.
Jeffrey R. Olson, Gregory W. Swift
openaire   +1 more source

Thermoacoustic Instability

2021
R. I. Sujith, Samadhan A. Pawar
openaire   +2 more sources

Numerical optimization of a novel thermoacoustically driven thermoacoustic refrigerator

The Journal of the Acoustical Society of America, 1997
Previous modeling work on a novel heat-driven refrigerator has generated overall COP numbers in the range of 0.45 using pure helium gas. The modeled conditions are for commercial or air-conditioning cooling temperatures, with a hot drive temperature of 400 °C.
openaire   +1 more source

Thermoacoustic CT

2000 IEEE MTT-S International Microwave Symposium Digest (Cat. No.00CH37017), 2002
R.A. Kruger, W.L. Kiser, K.D. Miller, H.E. Reynolds, D.R. Reinecke, G.A. Kruger, P.J. Hofacker   +6 more
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Thermoacoustic engines

IEEE 1991 Ultrasonics Symposium, 2002
W.P. Arnott, R. Raspet, H.E. Bass
openaire   +1 more source