Vacuum Pumping with Cryogenic Fluids

  • W. W. Balwanz
  • J. M. Singer
  • N. P. Frandsen
Conference paper
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 6)


High pumping rate systems have been utilized for a number of years for simulating altitudes of 30 miles or less. The simulation of appreciably higher altitudes with high gas release rates is not practical unless new and improved pumping techniques are utilized, Studies of various techniques are being conducted in an effort to find better methods for space simulation, Pumping methods of interest are enumerated in Table I.
Table I

Pumping Methods


Mechanical displacement

a. Rotary pumps

b. Blowers


Momentum transfer

a. Diffusion pumps

b. Jet ejectors


Chemical or electric bond attachment

a. Two-phase or cryogenic pumps

b. Ion pumps

c. Getters

d. Combustion

e. Adsorption


Matrix trapping

a. Interment

b. Absorption


Liquid Helium Liquid Hydrogen Cold Wall Inlet Port Diffusion Pump 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer Science+Business Media New York 1961

Authors and Affiliations

  • W. W. Balwanz
    • 1
  • J. M. Singer
    • 1
  • N. P. Frandsen
    • 1
  1. 1.U.S. Naval Research LaboratoryUSA

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