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An experimental reciprocating expander for cryocooler applicationAn experimental reciprocating expander was designed with features appropriate for cryocooler cycles. The expander has a displacer piston, simple valves, and a hydraulic/pneumatic stroking mechanism. The expander has a valve in head configuration with the valves extending out the bottom of the vacuum enclosure while the piston extends out the top. The expander was tested using a CTI 1400 liquefier to supply 13 atm in the temperature range 4.2 to 12 K. Expander efficiency was measured in the range 84 to 93% while operating the apparatus as a supercritical wet expander and in the range 91 to 93% aa a single phase expander. The apparatus can also be modified to operate as a compressor for saturated helium vapor.
Document ID
19860001913
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Minta, M. (Massachusetts Inst. of Tech. Cambridge, MA, United States)
Smith, J. L., Jr. (Massachusetts Inst. of Tech. Cambridge, MA, United States)
Date Acquired
August 12, 2013
Publication Date
May 1, 1985
Publication Information
Publication: NBS Proc. of the 3rd Cryocooler Conf.
Subject Category
Engineering (General)
Accession Number
86N11380
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Related Records

IDRelationTitle19860001900Collected WorksProceedings of the Third Cryocooler Conference
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