Results 121 to 130 of about 1,128 (182)

Reversible tunable topological phononic crystals based upon thermo-acoustic hydrogels. [PDF]

Microsyst Nanoeng
Lian M, Liu Z, Zhang J, Duan L, Su Y, Cao T.   +5 more
europepmc   +1 more source

A Study of the effect of eigenvalues on the Moore Gibson Thompson model under photoacoustic excitation of semiconductors. [PDF]

Sci Rep
El-Dali A, Othman MIA, Gamal EM, Alkhatib S.   +3 more
europepmc   +1 more source

Use of femtosecond laser generated reactive oxygen species to manage inflammation and enhance wound healing after ocular trauma. [PDF]

Sci Rep
Fan J, Fomovsky M, Wang C, Zyablitskaya M, Sazeides C, Bogunovic D, Vukelic S.   +6 more
europepmc   +1 more source

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Thermoacoustic engines

Journal of the Acoustical Society of America, 1988
Thermoacoustic engines, or acoustic heat engines, are energy-conversion devices that achieve simplicity and concomitant reliability by use of acoustic technology. Their efficiency can be a substantial fraction of Carnot’s efficiency. In thermoacoustic prime movers, heat flow from a high-temperature source to a low-temperature sink generates acoustic ...
G W Swift, Swift G W
exaly   +2 more sources

An experimental thermoacoustically driven thermoacoustic refrigerator

The Journal of the Acoustical Society of America, 1996
The construction of a thermoacoustically (heat) driven, thermoacoustic refrigerator (TADTAR) is nearing completion. The design utilizes a novel resonator topology and high-efficiency primary heat exchangers. Numerical models suggest a cooling power level of at least 500 W over a temperature span of 40 °C.
Thomas J. Hofler, Jay A. Adeff, Tom Heatter, Anthony A. Atchley   +3 more
openaire   +1 more source

A cascade thermoacoustic engine

The Journal of the Acoustical Society of America, 2003
A cascade thermoacoustic engine is described, consisting of one standing-wave stage plus two traveling-wave stages in series. Most of the acoustic power is produced in the efficient traveling-wave stages. The straight-line series configuration is easy to build and allows no Gedeon streaming.
Gardner, David Lee, Swift, Gregory
openaire   +2 more sources

Improvements in an experimental thermoacoustically driven thermoacoustic refrigerator

The Journal of the Acoustical Society of America, 1997
A thermoacoustically (heat) driven, thermoacoustic refrigerator apparatus, having a novel topology, has produced significant cooling power and efficiency. It has achieved a cooling temperature span of 60 °C, and 91 W of cooling power at a span of 25 °C, with an overall COP of 0.15. These numbers were produced with a porous carbon refrigerator stack and
Thomas J. Hofler, Jay A. Adeff
openaire   +1 more source

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
openaire   +2 more sources

Thermoacoustic refrigeration for space applications

Space Programs and Technologies Conference, 1991
A thermoacoustic refrigerator has been designed, tested, and certified by NASA to be flown aboard the space-shuttle get-away-special (GAS) payload program on STS-42 in January 1992. This thermoacoustic heat pump uses acoustic power to pump heat from a low-temperature source to a high-temperature sink. It has only 15 g of moving mass operating at 400 Hz,
Garrett, Steven L., Adeff, Jay A., Hofler, Thomas J.   +2 more
openaire   +2 more sources

Design and construction of a solar-powdered, thermoacoustically driven, thermoacoustic refrigerator

The Journal of the Acoustical Society of America, 2000
A thermoacoustically driven thermoacoustic refrigerator powered by solar thermal energy has been successfully built and tested. A 0.457 m diameter Fresnel lens focuses sunlight onto the hot end of a 0.0254 m diameter reticulated vitreous carbon prime mover stack, heating it to 475 °C, thereby eliminating the need for the most troublesome component in a
Adeff, Jay A., Hofler, Thomas J.
openaire   +3 more sources