Results 171 to 180 of about 1,003 (224)
Some of the next articles are maybe not open access.
Thermoacoustic travelling-wave cooler driven by a cascade thermoacoustic engine
Applied Thermal Engineering, 2013Abstract This paper proposes a novel configuration of a cooler driven by a cascade thermoacoustic engine. It consists of a standing-wave thermoacoustic engine, a travelling-wave thermoacoustic engine and a travelling-wave thermoacoustic cooler in series. The engines provide acoustic energy to drive the cooler.
Huifang Kang, Artur J Jaworski
exaly +2 more sources
A miniature thermoacoustic stirling engine
Energy Conversion and Management, 2008A miniature thermoacoustic stirling engine was simulated and designed, having overall size of length 0.65 m and height of 0.22 m. The acoustic field generated in this miniature system has been described and analyzed. Some efforts had been paid to coupling and matching, and a miniature thermoacoustic engine and some extra experimental components have ...
Gang Zhou +3 more
exaly +2 more sources
A cascade thermoacoustic engine
The Journal of the Acoustical Society of America, 2003A 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
Large eddy simulation of thermally induced oscillatory flow in a thermoacoustic engine [PDF]
Applied Energy, 2020 In this paper, a comprehensive high-fidelity three-dimensional computational fluid dynamic research using large eddy simulation has been conducted to investigate a standing-wave quarter-wavelength thermoacoustic engine that consists of a hot buffer, a ...
Geng Chen, Lihua Tang, Zhibin Yu
exaly +2 more sources
Working gases in thermoacoustic engines
The Journal of the Acoustical Society of America, 1999The best working gases for thermoacoustic refrigeration have high ratios of specific heats and low Prandtl numbers. These properties can be optimized by the use of a mixture of light and heavy noble gases. In this paper it is shown that light noble gas–heavy polyatomic gas mixtures can result in useful working gases.
J R, Belcher +4 more
openaire +2 more sources
Non-linear phenomena in thermoacoustic engines
Journal of Non-Equilibrium Thermodynamics, 2004zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Rivera-Alvarez, Alejandro, Chejne, Farid
openaire +2 more sources
A loaded thermoacoustic engine
The Journal of the Acoustical Society of America, 1995Measurements and analysis of the performance of a thermoacoustic engine driving a dissipative load are presented. The effect of the load can be explained qualitatively using a simple low-amplitude approximation and quantitatively by invoking a more accurate low-amplitude numerical solution. The heater power Q̇ and hot-end temperature TH are found to be
J. R. Olson, G. W. Swift
openaire +1 more source
Streaming in thermoacoustic engines
The Journal of the Acoustical Society of America, 1999Thermoacoustics utilizes an acoustic process to transport heat. Interestingly enough, sound sources that move essentially in a sinusoidal manner often do not yield flow fields of a sinusoidal nature. In addition to the oscillation of each fluid element contributing to the acoustic system, there can exist a pattern of steady vortices or other time ...
Gordon Smith, Richard Raspet, Henry Bass
openaire +1 more source
A Thermoacoustic Engine Design
Volume 2: 31st Computers and Information in Engineering Conference, Parts A and B, 2011This paper discusses basic standing wave theory as it relates to thermoacoustics as well as the design, construction, and testing of a simple thermoacoustic engine based upon these principles. This paper covers the design, construction, and testing of a proof-of-concept engine to demonstrate the possibility of converting heat energy into mechanical ...
Evan Wind +4 more
openaire +1 more source
The Journal of the Acoustical Society of America, 2003
Over the past several years, Los Alamos has successfully fabricated and tested traveling wave thermoacoustic heat engines having efficiencies much greater than those of traditional standing wave thermoacoustic engines. Unfortunately, Gedeon streaming effects present in these traveling wave engines has required using fluid flow ‘‘diodes’’ having greater
D. L. Gardner, G. W. Swift
openaire +1 more source
Over the past several years, Los Alamos has successfully fabricated and tested traveling wave thermoacoustic heat engines having efficiencies much greater than those of traditional standing wave thermoacoustic engines. Unfortunately, Gedeon streaming effects present in these traveling wave engines has required using fluid flow ‘‘diodes’’ having greater
D. L. Gardner, G. W. Swift
openaire +1 more source