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Spontaneous Condensation in Stationary Nozzle Flow of Carbon Dioxide in a Wide Range of Density

  • K. Bier
  • F. Ehrler
  • G. Theis
Conference paper
Part of the International Union of Theoretical and Applied Mechanics book series (IUTAM)

Summary

The onset and the progress of spontaneous condensation in a supersaturated, supersonic nozzle flow of carbon dioxide has been investigated by precise measurement of the static pressure along the nozzle axis. The supersaturation at the Wilson point, where condensation begins, has been determined for pressures from below the triple point up to about 90 per cent of the critical pressure. The Wilson lines of carbon dioxide, obtained from series of expansions performed with two nozzles of different divergence angle, are compared with results for two refrigerants, CF2 Cl2 and CHF2Cl, and for water vapour. For comparable flow geometry the Wilson lines of carbon dioxide and of the refrigerants are nearly identical in a normalized pressure-temperature diagram. For water vapour the supersaturation at the Wilson point is lower than for the non-associating substances.

Keywords

Wilson Line Expansion Rate Stagnation Pressure Stagnation Temperature Rankine Cycle 
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References

  1. 1.
    Bier, K.; Ehrler, F.; Kissau, G.; Lippig, V.; Schorsch, R.: Homogene Spontankondensation in expandierenden Dampfstrahlen des Kältemittels R22 bei hohen normierten Drücken. Forsch. Ing.-Wes. 43 (1977) 165–175.CrossRefGoogle Scholar
  2. 2.
    Theis, G.: Spontankondensation in übersättigten Dampfströ-mungen von Kohlendioxid und von Difluordichlormethan. Dissertation, Universität Karlsruhe (TH ), 1985.Google Scholar
  3. 3.
    Bender, E.: The Calculation of Phase Equilibria from a Thermal Equation of State Applied to the Pure Fluids Argon, Nitrogen, Oxygen and their Mixtures. C.F. Müller-Verlag, Karlsruhe, 1973.Google Scholar
  4. 4.
    Hechler, C.: Untersuchungen zur spontanen Kondensation in übersättigten Strömungen von Wasserdampf und Entwicklung eines Streulichtverfahrens zur Bestimmung der Tropfengröße und -konzentration. Dissertation, Universität Karlsruhe (TH ), 1988.Google Scholar
  5. 5.
    Pollak, R.: Die thermodynamischen Eigenschaften von Wasser. Dissertation, Ruhr-Universität Bochum, 1974.Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1990

Authors and Affiliations

  • K. Bier
    • 1
  • F. Ehrler
    • 1
  • G. Theis
    • 1
  1. 1.Institut für Technische Thermodynamik und KältetechnikUniversität Karlsruhe (TH)Germany

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