Method and apparatus for adapting steady flow with cyclic thermo

Details Method and apparatus for adapting steady flow with cyclic thermo Method and apparatus for adapting steady flow with cyclic thermo

1998-12-18

2000-12-26

Nguyen, Hoang

Power plants

Miscellaneous

60517, F01K 100

Patent

active

061640735

ABSTRACT:
Energy transfer apparatus has a resonator for supporting standing acoustic waves at a selected frequency with a steady flow process fluid thermodynamic medium and a solid medium having heat capacity. The fluid medium and the solid medium are disposed within the resonator for thermal contact therebetween and for relative motion therebetween. The relative motion is produced by a first means for producing a steady velocity component and second means for producing an oscillating velocity component at the selected frequency and concomitant wavelength of the standing acoustic wave. The oscillating velocity and associated oscillating pressure component provide energy transfer between the steady flow process fluid and the solid medium as the steady flow process fluid moves through the resonator.

REFERENCES:
patent: 3339635 (1967-09-01), Brandon
patent: 4114380 (1978-09-01), Ceperley
patent: 4355517 (1982-10-01), Ceperley
G. W. Swift, "Thermoacoustic Engines," J. Acoust. Soc. Am., pp. 1145-1180, (1998).
G. W. Swift, "Physics Today," No. 7, pp. 22-28, (1995).
J. A. Crunkleton, J. L. Smith, Jr., and Y. Iwasa, "High Pressure Ratio Cryocooler with Integral Expander and Heat Exchanger," Adv. Cryog. Eng., pp.--809-819, (1988).
Ben T. Zinn, "Pulsating Combustion," Advanced Combustion Methods, Academic Press, London, pp. 158-177, (1988).

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