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EFFECTS OF SIZE AND END CONDITIONS OF A HEATED SURFACE UPON MINIMUM FILM BOILING.

Author(s) : SHOJI M.

Type of article: Article

Summary

AN EXPERIMENT OF BOILING FOR SATURATED WATER AND SATURATED R113 WAS MADE AT ATMOSPHERIC PRESSURE ON A HORIZONTAL CYLINDER AND A HORIZONTAL CIRCULAR PLATE. THE DIAMETER OF THE CYLINDER OR THE PLATE WAS VARIED WIDELY TO STUDY SIZE EFFECTS. SEVERAL END CONDITIONS WERE TESTED. THE INFLUENCE OF END CONDITIONS WAS FOUND TO BE VERY STRONG ON THE MINIMUM HEAT FLUX OF THE CYLINDER. BY SETTING THE TEMPERATURE OF THE END OF CYLINDER SUFFICIENTLY HIGH, THE END EFFECT WAS REMOVED AND MINIMUM HEAT FLUX WAS OBTAINED. THE VALUE OF MINIMUM HEAT FLUX AGREES WELL WITH THE PREDICTION OF LIENHARD AND WONG WHEN THE DIAMETER OF CYLINDER IS SMALL, BUT IT TENDS TOWARD BERENSON'S PREDICTION AS THE DIAMETER INCREASES. IN THE EXPERIMENT ON A FLAT PLATE, 2 TRANSITION POINTS WERE OBSERVED.

Details

  • Original title: EFFECTS OF SIZE AND END CONDITIONS OF A HEATED SURFACE UPON MINIMUM FILM BOILING.
  • Record ID : 1988-1357
  • Languages: English
  • Source: JSME int. J. - vol. 30 - n. 268
  • Publication date: 1987/10
  • Document available for consultation in the library of the IIR headquarters only.

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