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Natural convection film-boiling heat transfer: film-boiling from horizontal cylinders in middle-and small-diameter regions.

Author(s) : NISHIO S., OHTAKE H.

Type of article: Article

Summary

Analytical solutions are derived for subcooled film boiling with a smooth liquid-vapour interface. Film boiling experiments around thin horizontal wires are conducted for water and R113 at atmospheric pressure. Results of the experiments indicate that saturated film-boiling heat transfer in the small-diameter region is enhanced by both rosary-vapour-film and thick-vapour-film effects. As for the effect of liquid subcooling on film-boiling heat transfer in the small-diameter region, it is found that the small-diameter region can be subdivided into normal and singular regions. In the singular region, heat-transfer coefficients decrease to a minimum with increasing liquid subcooling.

Details

  • Original title: Natural convection film-boiling heat transfer: film-boiling from horizontal cylinders in middle-and small-diameter regions.
  • Record ID : 1993-3265
  • Languages: English
  • Source: JSME int. J., Ser. I - vol. 35 - n. 4
  • Publication date: 1992/11
  • Document available for consultation in the library of the IIR headquarters only.

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