The Superfluid Stirling Refrigerator and Fluid Flow in 3He-4He Mixtures

超流斯特林制冷机和 3He-4He 混合物中的流体流动

• 批准号: 9416689
• 负责人: John Brisson
• 金额: $ 37.62万
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-11-01 至 1999-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9416689&HistoricalAwards=false
• 关键词: Superfluid; Stirling; Refrigerator; Fluid; Flow

Abstract CTS -- 9416689 The Principal Investigator will construct and test an improved superfluid Stirling refrigerator for attaining temperatures of less than 300 mK (that is, less than one Kelvin in absolute temperature.). The refrigerator will use a mixture of 3He and 4He as the working fluid in a reverse Stirling cycle. The results of the test program will be used to improve modeling of the refrigerator, and to gain further understanding of the behavior and interaction of the 4He solvent and the 3He "gas" at the temperatures of refrigerator operation. This type of refrigerator has the potential to replace other methods of attaining temperatures in the proposed range (dilution, 3He refrigerators, and demagnetization) because it is more energy efficient, does not require sealed pumps, does not depend on intense magnetic fields, and can operate in a zero-g environment.

摘要 CTS - 9416689 首席研究员将建造并测试改进的超流体斯特林制冷机，以达到低于 300 mK 的温度（即绝对温度低于 1 开尔文）。该冰箱将使用 3He 和 4He 的混合物作为逆斯特林循环中的工作流体。测试程序的结果将用于改进冰箱的建模，并进一步了解 4He 溶剂和 3He“气体”在冰箱运行温度下的行为和相互作用。 这种类型的制冷机有可能取代其他达到建议范围内温度的方法（稀释、3He制冷机和消磁），因为它更节能，不需要密封泵，不依赖强磁场，并且可以在零重力环境中运行。