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Comparison of transient heat transfer characteristics for large stepwise heat input in helium I and helium II.

Author(s) : SHIOTSU M., HATA K., SAKURAI A.

Type of article: Article

Summary

Characteristics such as the quasi-steady nucleate boiling with a lifetime for helium I, and the quasi-steady Kapitza conductance with a lifetime for helium II for ideal step inputs, are compared. Steady-state critical heat flux for helium II increases with increased subcooling and becomes much higher than that for helium I. In steady-state heat transfer for highly subcooled helium II, the surface temperature jump at the critical heat flux is negligibly small. Helium II has good stability characteristics for large local thermal disturbances, and these become significantly better with increased subcooling.

Details

  • Original title: Comparison of transient heat transfer characteristics for large stepwise heat input in helium I and helium II.
  • Record ID : 1994-0727
  • Languages: English
  • Source: Cryogenics - vol. 32 - n. 5
  • Publication date: 1992

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