Garrett, Steven L.
Hofler, Thomas J.
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A new refrigerator which uses resonant high amplitude sound in inert gases to pump heat is described and demonstrated. The phasing of the thermoacoustic cycle is provided by thermal conduction. This 'natural' phasing allows the entire refrigerator to operate with only one moving part (the loudspeaker diaphragm). The thermoacoustic refrigerator has no sliding seals, requires no lubrication, uses only low-tolerance machine parts, and contains no expensive components. Because the compressor moving mass is typically small and the oscillation frequency is high, the small amount of vibration is very easily isolated. This low vibration and lack of sliding seals makes thermoacoustic refrigeration an excellent candidate for food refrigeration and commercial/residential air conditioning applications. The design, fabrication, and performance of the first practical, autonomous thermoacoustic refrigerator, which will be flown on the Space Shuttle (STS-42), are described, and designs for terrestrial applications are presented.
RightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
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Hofler, Thomas J. (1994-06);Research on improving the efficiency, cooling power, and cooling power density of thermoacoustic refrigerators is described. A heuristic analysis of short thermoacoustic heat exchangers in a high amplitude sound field is ...
Garrett, Steven L.; Adeff, Jay A.; Hofler, Thomas J. (1993);A new spacecraft cryocooler which uses resonant high-amplitude sound waves in inert gases to pump heat is described. The phasing of the thermoacoustic cycle is provided by thermal conduction. This "natural" phasing allows ...
Hofler, Thomas J. (Cryocoolers-5 Committee, 1988-08);A brief overview of the principals of thermoacoustic refrigeration is given, in the context of a comparison to Stirling cycle coolers and pulse tube coolers. A practical cooling engine is described which is an electrically ...