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A model predicting temperature take-off conditions of superconductors.

Author(s) : NISHIO S., NAGAI N.

Type of article: Article

Summary

The take-off time, at which the temperature of conductors starts to increase rapidly, is estimated as the sum of the following three periods: transient heat conduction period, bubble coalescence period and macrolayer dryout period. Unfortunately, in the model, the bubble coalescence period is neglected because there is limited information on the mechanism establishing the macrolayer. The transient heat conduction period is estimated by the activation theory of pre-existing nuclei, and the macrolayer dryout period by extending the macrolayer model for steady-state critical heat flux by Haramura and Katto to transient states. The predictions are compared with experimental data for liquid helium.

Details

  • Original title: A model predicting temperature take-off conditions of superconductors.
  • Record ID : 1994-0764
  • Languages: English
  • Source: Cryogenics - vol. 32 - n. 5
  • Publication date: 1992

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