A Recuperative Superfluid Stirling Refrigerator
A superfluid Stirling refrigerator has been built with a counterflow heat exchanger serving as a recuperative regenerator. It has achieved temperatures of 296 mK with a 4% 3He-4He mixture. Cooling power versus temperature and speed is presented for a 6.6% mixture.
KeywordsHelium Convolution Germanium Refrigeration CuNi
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- 1.J. Wilks. “The Properties of Liquid and Solid Helium,” Clarendon, Oxford (1967) P. 232.Google Scholar
- 2.V. Kotsubo and G.W. Swift, Superfluid Stirling refrigerator: a new method for cooling below 1 Kelvin, in: “Proceedings of the Sixth International Cryocoolers Conference,” Geoffrey Green and Margaret Knox, ed., David Taylor Research Center, Bethesda, Md (1991).Google Scholar
- 4.Type 60030–1 from Metal Bellows Corporation, Sharon, Mass.Google Scholar
- 7.Lakeshore Cryotronics, Inc. 64 E. Walnut St. Westerville, Ohio 43081.Google Scholar
- 8.J.G. Brisson and G.W. Swift, Superfluid Stirling refrigerator with a counterflow regenerator, in: “Proceedings of the Seventh International Cryocoolers Conference,” Santa Fe, NM (1992).Google Scholar
- 9.R. Radebaugh, Thermodynamic properties of 3He-4He solutions with applications to the 3He-4He dilution refrigerator, NBS tech note 362: 19 (1967).Google Scholar
- 10.R. Radebaugh, A review of pulse tube refrigeration, in: “Advances in Cryogenic Engineering,” 35: 1191 (1990).Google Scholar