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MODIFICATION OF A CTI MODEL 1400 HELIUM LIQUEFIER FOR OPERATION WITH A WET EXPANDER AND A SATURATED VAPOUR COMPRESSOR.

Author(s) : SMITH J. L. Jr, PHAMDUY T.

Type of article: Article

Summary

A CTI MODEL 1400 HELIUM LIQUEFIER WAS MODIFIED FOR OPERATION WITH A WET EXPANDER AND A SATURATED VAPOUR COMPRESSOR. THE J-T (JOULE-THOMSON) STAGE HEAT EXCHANGER WAS REPLACED WITH A LARGER LOWER-PRESSURE DROP EXCHANGER. THE WET EXPANDER WAS CONNECTED IN PARALLEL WITH THE J-T VALVE, AND A NEW RECIPROCATING SATURATED VAPOUR COMPRESSOR (1,250 MM BORE, 1,250 MM STROKE) WAS CONNECTED DOWNSTREAM OF THE PHASE SEPARATOR/CALORIMETER. AT ABOVE 4.7 K, THE MAXIMUM CAPACITY WAS 90 WATTS WITH THE WET EXPANDER ONLY, AND 40 WATTS WITH THE J-T VALVE. WHEN OPERATED WITH THE WET EXPANDER AND THE SATURATED VAPOUR COMPRESSOR THE MINIMUM TEMPERATURE WAS 3.2 K.

Details

  • Original title: MODIFICATION OF A CTI MODEL 1400 HELIUM LIQUEFIER FOR OPERATION WITH A WET EXPANDER AND A SATURATED VAPOUR COMPRESSOR.
  • Record ID : 1991-1938
  • Languages: English
  • Source: Adv. cryog. Eng. - vol. 35 B
  • Publication date: 1990
  • Document available for consultation in the library of the IIR headquarters only.

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