Results 121 to 130 of about 1,140 (167)

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
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The optimal stack spacing for thermoacoustic refrigeration

The Journal of the Acoustical Society of America, 2002
The characteristic pore dimension in the stack is an important parameter in the design of thermoacoustic refrigerators. A quantitative experimental investigation into the effect of the pore dimensions on the performance of thermoacoustic devices is reported. Parallel-plate stacks with a plate spacing varying between 0.15 and 0.7 mm are manufactured and
Tijani, M.E.H., Zeegers, J.C.H., Waele, de, A.T.A.M.   +2 more
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Condensation in a steady-flow thermoacoustic refrigerator

The Journal of the Acoustical Society of America, 2000
Condensation may occur in an open-flow thermoacoustic cooler with stack temperatures below the saturation temperature of the flowing gas. In the experimental device described here the flowing gas, which is also the acoustic medium, is humid air, so the device acts as a flow-through dehumidifier. The humid air stream flows through an acoustic resonator.
R A, Hiller, G W, Swift
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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.
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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
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Thermoacoustic engines and refrigerators

AIP Conference Proceedings, 2012
Thermoacoustic 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, 2006
Recently, 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, Wei Dai, Yong Zhang, Hong Ling   +3 more
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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
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Scalability of Thermoacoustic Refrigerator

The Journal of the Acoustical Society of America, 2008
The 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, 1999
The 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, Rupert Klein, Etienne Besnoin, Omar M. Knio   +3 more
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