Refrigeration – Gas compression – heat regeneration and expansion – e.g.,...
Patent
1994-06-16
1995-10-10
Kilner, Christopher
Refrigeration
Gas compression, heat regeneration and expansion, e.g.,...
62467, F25B 900
Patent
active
054560829
ABSTRACT:
A thermoacoustic stack for connecting two heat exchangers in a thermoacoustic energy converter provides a convex fluid-solid interface in a plane perpendicular to an axis for acoustic oscillation of fluid between the two heat exchangers. The convex surfaces increase the ratio of the fluid volume in the effective thermoacoustic volume that is displaced from the convex surface to the fluid volume that is adjacent the surface within which viscous energy losses occur. Increasing the volume ratio results in an increase in the ratio of transferred thermal energy to viscous energy losses, with a concomitant increase in operating efficiency of the thermoacoustic converter. The convex surfaces may be easily provided by a pin array having elements arranged parallel to the direction of acoustic oscillations and with effective radial dimensions much smaller than the thicknesses of the viscous energy loss and thermoacoustic energy transfer volumes.
REFERENCES:
patent: 4114380 (1978-09-01), Ceperley
patent: 4398398 (1983-08-01), Wheatley et al.
patent: 4489553 (1984-12-01), Wheatley et al.
patent: 4625517 (1986-12-01), Muller
patent: 4722201 (1988-02-01), Hofler et al.
patent: 4858441 (1989-08-01), Wheatley et al.
patent: 4953366 (1990-09-01), Swift et al.
patent: 5165243 (1992-11-01), Bennett
patent: 5174130 (1992-12-01), Lucas
patent: 5303555 (1994-04-01), Chrysler et al.
patent: 5339640 (1994-08-01), Reinke
John C. Wheatley et al., "The Natural Heat Engine," Reprinted from Los Alamos Science, No. 24, pp. 2-33 (Fall 1986).
W. Swift, "Thermoacoustic Engines," 84 J. Acoust. Soc. Am. 1145 (1988).
Nikolaus Rott, "Damped and Thermally Driven Acoustic Oscillations in Wide and Narrow Tubes," 20 Z. Angew Math. Phys. 230 (1969).
Pat Arnott et al., "General Formulation of Thermoacoustics for Stacks Having Arbitrarily Shaped Pore Cross Sections," 90 J. Acoust. Soc. Am 3228 (1991).
W. Swift, "Analysis and Performance of a Large Thermoacoustic Engine," 92 J. Acoust. Soc. Am. 1551 (1992).
Keolian Robert M.
Swift Gregory W.
Kilner Christopher
The Regents of the University of California
Wilson Ray G.
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