Results 81 to 90 of about 132 (123)
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Design and construction of a solar-powdered, thermoacoustically driven, thermoacoustic refrigerator
The Journal of the Acoustical Society of America, 2000A 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.
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High-power thermoacoustic refrigerator
Applied Thermal Engineering, 1997A high-power thermoacoustic refrigerator including a half-wave length resonator (80), first and second drivers (10) located in housings at first and second ends of said resonator, two pusher cones (100), a plurality of heat exchangers (30, 50), a first and second stack (40), utilizing a compressible gas mixture (120) capable of being tuned to the ...
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Thermoacoustic engines and refrigerators
AIP Conference Proceedings, 2012Thermoacoustic engines and refrigerators use gas inertia and compressibility to eliminate many of the mechanical contrivances required by traditional engines and refrigerators while providing potentially attractive options that might reduce environmental impacts.
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Thermoacoustically driven refrigerator with double thermoacoustic-Stirling cycles
Applied Physics Letters, 2006Recently, considerable research efforts have been made to search substitution technologies for chlorofluorocarbon-based vapor compression cycles due to the concern over environmental issues. This letter introduces a helium-based thermoacoustic refrigeration system, which is a thermoacoustic-Stirling refrigerator driven by a thermoacoustic-Stirling heat
Ercang Luo +3 more
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Experimental investigation of an adjustable thermoacoustically-driven thermoacoustic refrigerator
International Journal of Refrigeration, 2018Abstract 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
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Scalability of Thermoacoustic Refrigerator
The Journal of the Acoustical Society of America, 2008The uses of thermoacoustic effect are the conversion of heat onto acoustic wave by thermoacoustic prime mover and pumping heat by acoustic wave using a thermoacoustic refrigerator. Thermoacoustic refrigerator is a good alternative to conventional vapor compression device.
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Computational analysis of a thermoacoustic refrigerator
The Journal of the Acoustical Society of America, 1999The velocity and temperature fields in an idealized, parallel-plate, thermoacoustic refrigerator are analyzed using a low-Mach-number computational approach. Two-dimensional unsteady calculations of the flow field in the neighborhood of the stack and heat exchangers are performed using: (a) a semi-implicit, finite-volume, Godunov-type, compressible ...
Thomas Schneider +3 more
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Miniaturation of thermoacoustic refrigerators
The Journal of the Acoustical Society of America, 2008The possibility to miniature thermoacoustic refrigerators is theoretically investigated. Both standing-wave and traveling-wave systems are considered. In the consideration of standing-wave refrigerators, a system consisting of a resonator tube (50 cm) with a closed end and a PVC stack (length 5 cm) is taken as a reference.
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Sensorless control of a thermoacoustic refrigerator
The Journal of the Acoustical Society of America, 2004A method for commanding the frequency of the signal that drives an electrodynamic sound source to maintain the coupled thermoacoustic resonator at its resonance frequency is described. The method uses only the current and voltage applied to the source terminals to select the operating frequency, thereby eliminating the need for pressure and ...
Tony L. Shearer +3 more
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Redesign of a small thermoacoustic refrigerator
The Journal of the Acoustical Society of America, 2000At the Fall 1999 meeting of the Acoustical Society of America, the design and initial performance of a small, electrically powered thermoacoustic refrigerator was presented. The refrigerator has nominal dimensions of 5 in. long and 1 in. diameter with a target of 10 W of cooling over a 25<th>°C temperature span using 2-bar helium as the ...
Tamra S. Underwood +3 more
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