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Argon-oxygen mixtures for Joule-Thomson cryocooling at elevated altitude.
Author(s) : MAYTAL B. Z.
Type of article: Article, IJR article
Summary
At high altitude where the ambient pressure is low, argon as a coolant of a Joule–Thomson cryocooler solidifies and is not able to preserve the temperature of a cooled object with the same success as by liquefied and boiling argon. Instead of other strategies of thermal storage techniques, it is proposed to add oxygen to argon so to suppress the triple point of the mixture below that of argon. An experiment with 20% oxygen mixture demonstrated that indeed a cryocooler for argon operates well with the mixture while enabling solid free higher altitude run. An analysis of pure oxygen and its mixtures with argon shows that the performance of the mixed coolant is reasonably close to that of pure argon.
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Pages: 54-61
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Details
- Original title: Argon-oxygen mixtures for Joule-Thomson cryocooling at elevated altitude.
- Record ID : 30016319
- Languages: English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 60
- Publication date: 2015/12
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Indexing
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Themes:
Small-scale cryogenic applications, cryocoolers;
Blends - Keywords: Oxygen; Joule-Thomson; Argon; Sublimation; Mixture; Cryocooler; Boiling
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- Source: Multiconference CryoPrague 2006 (9th Cryogenics 2006, ICEC 21, ICMC'06)
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