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CLOSED CYCLE CRYOGENIC COOLERS FOR CRYOSURGERY.

Author(s) : AUGUSTYNOWICZ S. D., MALAKER S. F.

Summary

THE MODIFIED STIRLING MACHINE AS A CLOSED CYCLE CRYOGENIC REFRIGERATOR FOR CRYOBIOLOGY APPLICATION IS DESCRIBED. COOLER M15-S WITH THE COOLING CAPACITY OF 1 WATT AT 77 K HAS BEEN USED FOR EXPERIMENTS IN THE DISTRIBUTION OF TEMPERATURE IN SUBSTANCE (MEAT). COOLING RATES FOR DIFFERENT PARAMETERS HAVE ALSO BEEN EXAMINED. THE COOLING RATE OF SUBSTANCE 5 MM DEEP WAS FROM 0.09 K/SEC TO 0.11 K/SEC AND IN 9 MM DEEP WAS 0.075 K/SEC. DIFFERENCE OF INITIAL TEMPERATURE OF COLD HEAD OF 17 K DOES NOT AFFECT, IN PRACTICE, THE FROZEN SURFACE SUBSTANCE TEMPE TIME TO OBTAIN 173 K ON COLD HEAD WITHOUT VACUUM INSULATION WAS 6 MINUTES AND FOR 123 K IT WAS 13 MINUTES.

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Pages: 78-83

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Details

  • Original title: CLOSED CYCLE CRYOGENIC COOLERS FOR CRYOSURGERY.
  • Record ID : 1988-1693
  • Languages: English
  • Source: Development in refrigeration, refrigeration for development. Proceedings of the XVIIth international Congress of Refrigeration.
  • Publication date: 1987/08/24
  • Document available for consultation in the library of the IIR headquarters only.

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