Transient Heat Transfer from a Horizontal Wire in Subcooled He II at Atmospheric Pressure for a Wide Range of Wire Diameter

  • M. Shiotsu
  • K. Hata
  • A. Sakurai
Part of the A Cryogenic Engineering Conference Publication book series (ACRE, volume 41)

Abstract

Transient heat transfer caused by large stepwise heat inputs to a horizontal wire in subcooled He II at atmospheric pressure was measured for the wire diameters of 0.08, 0.2, 0.5 and 0.7 mm. Liquid temperatures tested were 1.8, 1.9, 2.0 and 2.1 K. The steady-state critical heat flux which is dependent on liquid temperature and wire diameter was well expressed by the authors’ correlation based on Gorter-Mellink equations. The lifetime of quasi-steady Kapitza conductance state, which corresponds to that of a certain point on the extrapolation of stead-state Kapitza conductance curve, was systematically measured on the wires: the quasi-steady state rapidly changes to film boiling regime at the end of the lifetime. The lifetime at an excess heat flux beyond steady-state critical heat flux, is longer for a larger diameter wire, though the steady-state critical heat flux is lower. Excessive heat flux beyond steady-state critical heat flux, when integrated from the time that the heat flux reaches the steady-state critical heat flux to the end of the quasi-steady state lifetime is almost constant and it is independent of the step heights and of the initial waveform during the rise time to the step height. A correlation for the average integrated value was given as a function of the wire radius and bulk liquid temperature. The lifetimes for the ideal step heat inputs (rise time = 0) are given from the correlation.

Keywords

Platinum Helium Boiling Kelly 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Bon Mardion, G., Claudet, G., Seyfert, P., Steady State Heat Transport in Superfluid Helium at 1bar, in:”Proceedings of 7th International Cryogenic Engineering Conference”, IPC Science and Technology Press, London (1978), p.441.Google Scholar
  2. 2.
    Van Sciver, S.W., Kapitza Conductance of Aluminum and Heat Transport through Subcooled He II, Cryogenics, 18:521 (1978).CrossRefGoogle Scholar
  3. 3.
    Lottin, J.C., He II Experimental Facilities at Saclay,”Advances in Cryogenic Engineering”, Vol.27, Plenum Press, New York, (1982), p.431.Google Scholar
  4. 4.
    Van Sciver, S.W., Transient Heat transport in He II, Cryogenics, 19:385 (1979).CrossRefGoogle Scholar
  5. 5.
    Sayfert, P., Lafferanderrie, J., and Claudet, G., Time Dependent Heat Transport in Subcooled Superfluid Helium, Cryogenics, 22:401 (1982).CrossRefGoogle Scholar
  6. 6.
    Frederking, T.H.K., Wärmeübergang bei der Verdampfung der verflüssigten Gase Helium und Stickstoff, Forschung, 27:17 (1961).Google Scholar
  7. 7.
    Goodling, J.S. and Irey, R.K., Non-Boiling and Film Boiling Heat Transfer to a Saturated Bath of Liquid Helium,”Advances in Cryogenic Engineering”, Vol.14, Plenum Press, New York (1969), p.159.Google Scholar
  8. 8.
    Haben, R.L., Madsen, R.A., Leonard, A.C., and Frederking, T.H.K., Breakdown of Superfluidity for Cylinders in Saturated Liquid Helium II,”A dvances in Cryogenic Engineering”, Plenum Press, New York, (1972), p.323.Google Scholar
  9. 9.
    Van Sciver, S.W., and Lee, R.L., Heat Transfer from Circular Cylinders in He II, in:”Cryogenic Process and Equipment in Energy Systems”, ASME Publication No. H00164 (1981), p.147.Google Scholar
  10. 10.
    Lemieux, G.P., and Leonard, A.C., Maximum and Minimum Heat Flux in Helium II for a 76.2-μ Diameter Horizontal Wire at Depths of Immersion up to 70 centimeters,”Advances in Cryogenic Engineering”, Vol.13, Plenum Press, New York (1981), p.624.Google Scholar
  11. 11.
    Gradt, T., Wang, R., Ruppert, U., and Luders, K., Transient Heat Transfer to Superfluid Liquid,”Advances in Cryogenic Engineering”, Vol. 35A, Plenum Press, New York (1989), p.117.Google Scholar
  12. 12.
    Shiotsu, M., Hata, K., and Sakurai, A., Transient Heat Transfer from a Horizontal wire in Superfluid Helium Caused by Exponential and Step Heat Inputs, in:”Superfluid Helium Heat Transfer”, J.P. Kelly and W.J. Schneider ed., ASME Publication No. HTD-Vol.134.(1990), p.9.Google Scholar
  13. 13.
    Sakurai, A., Shiotsu, M., and Hata, K., Transient Heat Transfer for Large stepwise Heat Inputs to a Horizontal Wire in Saturated He II,”Advances in Cryogenic Engineering”, Vol.37A, Plenum Press, New York (1992), p.25.Google Scholar
  14. 14.
    Shiotsu, M., Hata, K., and Sakurai, A., Transient Heat Transfer for Large Stepwise Heat Inputs to a Horizontal Wire in Subcooled He II,”Advances in Cryogenic Engineering”, Vol.37A, Plenum Press, New York, (1992), p.37.Google Scholar
  15. 15.
    Shiotsu, M., Hata, K., and Sakurai, A., Steady and Unsteady Heat Transfer from a Horizontal Wire in a Pool of Subcooled He II, in”Heat Transfer and Superconducting Magnetic Energy Storage”,J.P. Kelly and M. J. Supercznski ed., ASME Publication No. HTD-Vol.211 (1992), p.19.Google Scholar
  16. 16.
    Shiotsu, M., Hata, K., and Sakurai, A., Effect of Test Heater Diameter on Critical Heat Flux in He II,”Advances in Cryogenic Engineering”, Vol.39, Plenum Press, New York (1994), p.1797.Google Scholar
  17. 17.
    Shiotsu, M., Hata, K., Takeuchi, Y., Hama, K., and Sakurai, A., Critical Heat Flux on Single Horizontal Wires in Superfluid Helium at Pressures, in:”Heat Transfer 1994 (Proc. of the 10th Internat. Heat Transf. Conf.)”, G.F. Hewitt ed. Vol.5, Taylor and Francis, USA (1994), p.141.Google Scholar

Copyright information

© Plenum Press, New York 1996

Authors and Affiliations

  • M. Shiotsu
    • 1
  • K. Hata
    • 1
  • A. Sakurai
    • 1
  1. 1.Institute of Atomic EnergyKyoto UniversityUji, Kyoto 611Japan

Personalised recommendations