Traveling-wave thermoacoustic engines with internal...

Details Traveling-wave thermoacoustic engines with internal... Traveling-wave thermoacoustic engines with internal...

2005-03-22

2005-03-22

Richter, Sheldon J (Department: 3748)

Power plants

System having plural motors or having diverse types of...

C060S712000, C060S721000, C062S006000

Reexamination Certificate

active

06868673

ABSTRACT:
Systems and methods for manipulating acoustic energy are presented. In some embodiments, a combustion zone provides heat to a regenerator using a mean flow of compressible fluid. In other embodiments, a thermoacoustic driver is concentrically disposed within a shell to permit radial heat transfer from the thermoacoustic driver to compressible fluid within the shell, thereby preheating the compressible fluid within the shell. In other embodiments, burning of a combustible mixture within the combustion zone is pulsed in phase with the acoustic pressure oscillations to increase acoustic power output.

REFERENCES:
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patent: 4355517 (1982-10-01), Ceperley
patent: 5953920 (1999-09-01), Swift et al.
patent: 6032464 (2000-03-01), Swift et al.
patent: 6164073 (2000-12-01), Swift et al.
patent: 6314740 (2001-11-01), De Blok et al.
patent: 6666033 (2003-12-01), Swift et al.
patent: 6732515 (2004-05-01), Weiland et al.
“A Pistonless Stirling Engine—The Traveling Wave Heat Engine” Ceperley; 1979.
“Gain and Efficiency of a Short Traveling Wave Heat Engine” Ceperley; 1985.
“Pulsating Combustion” Zinn; 1986; pp. 113-181.
“A Thermoacoustic-Stirling Heat Engine: Detailed Study” Backhaus, et al.; 2000.
“Experiments with a Flow-Through Thermoacoustic Refrigerator” Reid et al.; 2000.
“Thermoacoustics for Liquefaction of Natural Gas” Swift; 2002; pp. 22-26.
“Development of a Thermoacoustic Natural Gas Liquefier” Wollan, et al.; Mar. 2002; pp. 1-8.
“A Pistonless Stirling Engine—The Traveling Wave Heat Engine” Ceperley; J. Acoust. Soc. Am. 66(5), Nov. 1979.
“Gain and Efficiency of a Short Traveling Wave Heat Engine” Ceperley; J. Acoust. Soc. Am. 77(3), Mar. 1985.
“Pulsating Combustion” Zinn; 1986; Advanced Combustion Methods, ISBN0-12-742340-0 pp. 113-181.
“A Thermoacoustic-Stirling Heat Engine: Detailed Study” Backhaus, et al.; J. Acoust. Soc. Am. 107(6), Jun. 2000.
“Experiments with a Flow-Through Thermoacoustic Refrigerator” Reid et al.; J. Acoust. Soc. Am. 108(6), Dec. 2000.
“Thermoacoustics for Liquefaction of Natural Gas” Swift; Fall 2002; GasTIPS, pp. 22-26.
“Development of a Thermoacoustic Natural Gas Liquefier” Wollan, et al.; AIChE New Orleans Meeting, Mar. 11-14, 2002; pp. 1-8.

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