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machine de refrigeration a 20K

Refrigeration around 20 K

Refrigerators tailor-made to slow down neutrons

Our 20K refrigerators can be used to cool any cryogenic application that requires refrigeration capacity of between 500W and 14kW and above.

Our refrigeration systems are generally intended for cold Neutron sources and their design is tailored to meet the needs of customer applications. They include the refrigerator capable of delivering helium at the temperature required (around 20K) and the fluid storage and distribution system and occasionally the helium cooled Hydrogen/Deuterium system.



  • Cold neutron sources
  • Deuterium distillation

Key benefits

  • Qualification at Air Liquide: potential to test Hydrogen facilities in the DTA testing area
  • High performance: optimally efficient tailor-made systems that can reduce operating costs
  • Reduced maintenance: through the choice of highly reliable components that require less maintenance
  • Smaller operating teams: automation means that units can work on standard timetables and not in shifts (3-shift system etc.)

Main technical characteristics

  • Lubricated screw compressor
  • Oil separation and cycle pressure management system
  • Cold box with built-in Air Liquide static gas bearing turbines
  • Automatic management of system cool-down, design operating state of refrigerator and turnaround
  • Helium/Hydrogen (or Deuterium) exchangers with associated transfer and storage systems


  • ASME Stamp U (USA) - HPGSL (Japan) - AQSIQ (China)
  • CE Marking / ASME with no stamp


  • ILL (France)
  • CEA Saclay Orphee Reactor (France)
  • GKSS (Germany)
  • HMI (Germany)
  • ANSTO-INVAP (Australia)
  • Helium / hydrogen refrigeration for ISIS Target Station 2 (UK)

Discover also

The cryogenic technological break-through for refrigeration and liquefaction from 25K to 200K