Natural-Convection Film-Boiling Heat Transfer : Film-Boiling from Horizontal Cylinders in Middle- and Small-Diameter Regions

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In this report, to discuss natural-convection film-boiling heat transfer around horizontal cylinders in the small-diameter region, analytical solutions are derived for subcooled film boiling with a smooth liquid-vapor interface. Next, film boiling experiments around thin horizontal wires are conducted for water and R113 at atmospheric pressure. Results of the experiments indicate that, compared with analyses assuming a smooth interface, saturated film-boiling heat transfer in the small-diameter region is enhanced by both rosary-vapor-film and thick-vapor-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.

収録刊行物

  • JSME international journal. Ser. 2, Fluids engineering, heat transfer, power, combustion, thermophysical properties

    JSME international journal. Ser. 2, Fluids engineering, heat transfer, power, combustion, thermophysical properties 35-II(4), 580-588, 1992-11-15

    一般社団法人日本機械学会

各種コード

  • NII論文ID(NAID)
    110002492699
  • NII書誌ID(NCID)
    AA10680596
  • 本文言語コード
    ENG
  • ISSN
    09148817
  • データ提供元
    NII-ELS 
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