9. Some examples of liquefiers and refrigerators

9.1 Refrigerator at 20 K

Hydrogen-saturated steam vaporized in the neutron moderator cells of the cold neutron sources at the ORPHÉE research reactor in Saclay is recondensed in a heat exchanger through which cold helium from the refrigerator flows.

The refrigerator shown in figure 51 operates on a single-turbine Brayton cycle (§ 3.2

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Some examples of liquefiers and refrigerators

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page Structure of a refrigerator or liquefier

Developments

Bibliography

Also in our database

MARVILLET (C.), BONTEMPS (A.), HUETZ (J.), GARRIGUE (A.), VIDIL (R.), GOUBIER (C.), MERCIER (P.) - Échangeurs de chaleur – Définitions et architecture générale. - [B 2 340] , 10 fév. 1994.
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Software tools

CRYODATA http://www.cryodata.com/

Cryodata develops software for calculating the thermodynamic properties of fluids and solids, with a focus on cryogenic temperatures.

GASPAK calculates 28 thermophysical properties of 36 fluids with boiling points between 4 K and room temperature.

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Events

International Cryogenic Engineering Conference (ICEC) http://mgt-icec.web.cern.ch/mgt-icec/

International conference held every even-numbered year, in Europe or other continents except North America.

Cryogenic Engineering Conference (CEC)

Patents

US patent 5 499 505 dated 03/19/1996, Helium refrigerator with compressor control

US patent 5 941 095 dated 08/24/1999, Process for compressing a gas at low temperature and low pressure, corresponding compression line and refrigeration plant.