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Title:
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Study of a thermoacoustic-Stirling cooler
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Author(s):
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Published by:
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Publication date:
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ECN
Energy Efficiency in Industry
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8-5-2007
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ECN report number:
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Document type:
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ECN-M--07-038
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Conference Paper
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Number of pages:
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Full text:
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21
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Download PDF
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Presented at: International congress on ultrasonics (ICU), Vienna, Austria, 9-12 april 2007.
Abstract:
A thermoacoustic-stirling cooler is built and performance measurements are performed. The cooler uses the acoustic power produced by a linear motor to pump heat through a regenerator from a cold heat exchanger to an ambient one. The cooler incorporates a compact acoustic network to create the traveling-wave phasing necessary to operate in a Stirling cycle. The network has a coaxial topology instead of the toroidal one usually used. The design, construction and performance measurements of the cooler are presented. A measured coefficient of performance relative to Carnot of 25 % and a low temperature of -54?C are achieved by the cooler. This efficiency surpasses the performance of the most efficient standing wave cooler by almost a factor of two.
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