Test Results of a Large Size Thermomechanical Pump

  • A. Hofmann
  • W. Herz
  • E. Suesser
  • B. Vogeley
  • T. Voelkel
  • G. Zahn
Chapter
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 39)

Abstract

A thermomechanical pump designed for operating the EURATOM-LCT coil with forced flow of helium II has been tested. When operated in self-driven mode, the flow rate proves to saturate for a heat load of 70 W, but even higher loads of up to 150 W can be removed from the loop without problems. Peak flow rates of up to 30 g/s and pressure heads of up to 0.450 bar have been achieved. The performance of the pump is compared with the predictions. This comprises the various heat exchangers, the internal pressure drop and the critical flow rate given by the porous plug.

Keywords

Entropy Vortex Porosity Helium Flange 

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References

  1. 1.
    G. Zahn, A. Hofmann, H. Bayer, H. Berndt, R. Doll, W. Hcrz, M. Suesser, E. Turnwald, B. Vogeley, W. Wiedemann, Test of three different pumps for circulating He I and He II, Cryogenics 1992 Vol 32 ICEC Suppl., p. 100CrossRefGoogle Scholar
  2. 2.
    A. Hofmann, Design of a Fountain Effect Pump for Operating the EURA-TOM-LCT Coil with Forced Flow of Helium II, Adv. in Cryogenic Engineering, Vol. 37, Part A, Plenum Press NY 1992, p. 139–146Google Scholar
  3. 3.
    A. Hofmann, A. Khalil, and H.P. Kraemer, Cryogenics 27 (1987)682CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1994

Authors and Affiliations

  • A. Hofmann
    • 1
  • W. Herz
    • 1
  • E. Suesser
    • 1
  • B. Vogeley
    • 1
  • T. Voelkel
    • 1
  • G. Zahn
    • 1
  1. 1.Institut für Technische PhysikKernforschungszentrum KarlsruheKarlsruheGermany

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