Thermoacoustic heat pumping effect in a Gifford-McMahon refrigerator

S. Sunahara, T. Biwa, U. Mizutani

研究成果: Article

4 引用 (Scopus)

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The heat exchange process between the working helium gas and the regenerator materials in a Gifford-McMahon refrigerator is studied from the viewpoint of thermoacoustic phenomena, by measuring the cooling power as a function of the phase angle between pressure and displacement oscillations of the working gas. It is found that the optimum phase angle maximizing the cooling power dramatically increases when the operating temperature decreases below 20 K. This behavior represents the progress of the irreversible heat exchange process due to the reduction of the thermal diffusivity of helium gas.

元の言語English
ページ(範囲)6334-6336
ページ数3
ジャーナルJournal of Applied Physics
92
発行部数10
DOI
出版物ステータスPublished - 2002 11 15
外部発表Yes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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