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Localized Heat Transfer to Vertical Forced Flow Two-Phase Helium

  • J. Panek
  • X. Huang
  • S. W. Van Sciver
Part of the A Cryogenic Engineering Conference Publication book series (ACRE, volume 41)

Abstract

Localized heat transfer measurements in vertical two-phase helium are reported. The test loop contains two short heat transfer sections made of 5 mm thick oxygen-free high conductivity (OFHC) copper discs. These test sections were installed in a U-shaped vertical flow loop driven by a single-stroke bellows pump. The surface temperature of each test section is measured with two germanium thermometers placed on different radial positions in each test section. With one test section placed on the downflow side and one on the upflow side of the loop, the effect of flow orientation on heat transfer characteristics in vertical two-phase helium flow is investigated. The study includes the effects of system pressure, mass flow rate, and geometry on the heat transfer coefficient, critical heat flux, and recovery heat flux.

Keywords

Heat Flux Heat Transfer Coefficient Test Section Mass Flow Rate Critical Heat Flux 
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Copyright information

© Plenum Press, New York 1996

Authors and Affiliations

  • J. Panek
    • 1
  • X. Huang
    • 1
  • S. W. Van Sciver
    • 1
  1. 1.National High Magnetic Field LaboratoryTallahasseeUSA

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