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On the role of Marangoni effects on the critical heat flux (CHF) for pool boiling of binary mixtures.

Author(s) : MCGILLIS W. R., CAREY V. P.

Type of article: Article

Summary

The Marangoni effect on the CHF condition in pool boiling of binary mixtures has been identified and its effect has been quantitatively estimated with a modified model derived from hydrodynamics. The physical process of CHF in binary mixtures, and models used to describe it, are examined in the light of recent experimental evidence. The CHF condition was determined experimentally for saturated methanol/water, 2-propanol/water, and ethylene glycol/water mixtures, over the full range of concentrations, and compared to the model. The evidence in this study demonstrates that in a mixture with large differences in surface tension, there is an additional hydrodynamic restoring force affecting the CHF condition.

Details

  • Original title: On the role of Marangoni effects on the critical heat flux (CHF) for pool boiling of binary mixtures.
  • Record ID : 1997-1394
  • Languages: English
  • Source: J. Heat Transf. - vol. 118 - n. 1
  • Publication date: 1996/02
  • Document available for consultation in the library of the IIR headquarters only.

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