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The Vapor Pressure of Dry Air at Low Temperatures

  • G. Walker
  • W. J. Christian
  • R. A. Budenholzer
Conference paper
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 11)

Abstract

Dry air is a mixture of gases (chiefly oxygen and nitrogen) having different boiling points. There is no single vapor-pressure curve, as in the case of a pure substance. Instead, the liquid-vapor equilibrium is represented by a bubble-point curve and a dew-point curve. The bubble-point pressure of a liquid mixture is that pressure at which, for a given temperature, vapor just begins to appear. When this pressure is plotted against temperature for a liquid mixture of constant composition, the curve obtained is called the bubble-point curve. The dew-point pressure of a gaseous mixture is that pressure at which, for a given temperature, liquid just begins to appear. When this pressure is plotted against temperature for a gaseous mixture of constant composition, the curve obtained is called the dew-point curve.

Keywords

Liquid Mixture Cold Spot Mixture Supply Aerospace Research Laboratory Liquid Neon 
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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References

  1. 1.
    R. L. Powell, L. P. Caywood, and M. D. Bunchy Temperature—Its Measurement and Control in Science and Industry, Vol. 3, Part 2, Reinhold Publishing Corp., New York (1962).Google Scholar
  2. 2.
    J. C. Mullins, W. T. Ziegler, and B. S. Kirk, “The Thermodynamic Properties of Oxygen from 20°K to 100oK,” Technical Report No. 2, Project No. A593, Engineering Experiment Station, Georgia Institute of Technology (1962).Google Scholar
  3. 3.
    V. J. Johnson (ed.), A Compendium of the Properties of Materials at Low Temperatures (Phase 1), Part 1, “Properties of Fluids,” WADDTR 60–56 (1960).Google Scholar

Copyright information

© Springer Science+Business Media New York 1966

Authors and Affiliations

  • G. Walker
    • 1
  • W. J. Christian
    • 1
  • R. A. Budenholzer
    • 1
  1. 1.IIT Research InstituteChicagoUSA

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