VACUUM PUMPING BY CRYOSORPTION

Abstract

A method of measuring and analyzing the variation in the rate of adsorption by activated charcoal at 77 K for continuous inflow of nitrogen gas is presented. A set of adsorption parameters is developed for the analysis. Particular attention is given to the meaning of pumping speed for an adsorbent bed of charcoal pellets, and an equation is derived which describes the behavior of pressure in a chamber during continuous adsorption. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1962
Accession Number
AD0287182

Entities

People

  • E. S. Wang
  • S. M. Kindall

Organizations

  • Arnold Engineering Development Complex

Tags

Communities of Interest

  • Ground and Sea Platforms
  • Materials and Manufacturing Processes
  • Weapons Technologies

DTIC Thesaurus Topics

  • Adsorbents
  • Adsorption
  • Barometric Pressure
  • Diffusion
  • Diffusion Pumps
  • Dynamic Pressure
  • Equations
  • Flow Rate
  • Government Procurement
  • Governments
  • Isotherms
  • Pumping
  • Pumps
  • Sorption
  • Steady State
  • United States
  • Vacuum Chambers

Readers

  • Aerodynamics.
  • Aquatic Ecology
  • Thermal Physics or Thermal Science.