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ECN publicatie:
Study of a coaxial thermoacoustic-Stirling cooler
Gepubliceerd door: Publicatie datum:
ECN Energie Efficiency in de Industrie 8-5-2008
ECN publicatienummer: Publicatie type:
ECN-W--08-013 Artikel wetenschap tijdschrift
Aantal pagina's:

Gepubliceerd in: Cryogenics (Elsevier), , 2008, Vol.vol. 48, p.77-82.

A coaxial 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 for the operation in a Stirling cycle. The network has a coaxial geometry instead of the toroidal one usually used in such systems. 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 degrees 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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