AN EXPERIMENTAL INVESTIGATION OF SURFACE EFFECTS ON NUCLEATE POOL BOILING OF LIQUID NITROGEN FORM A HORIZONTAL SURFACE

Abstract

The effect of various surface conditions on the characteristic boiling curve for liquid nitrogen was experimentally investigated. A circular horizontal flat plate five square centimeters in area was utilized as a boiler surface. The surfaces investigated included mirror finished surfaces, etched surfaces, and surfaces with .0043 inch diameter artificial cylindrical cavities. Each these surface conditions was used with Electrical Tough Pitch Copper and Nickel 200 boiling surfaces. The results indicate that surface conditions significantly affect the heat transfer coefficients during nucleate pool boiling of liquid nitrogen. Results from hysteresis data indicate that once boiling sites become active they tend to remain active and produce higher heat transfer rates.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1967
Accession Number
AD0819032

Entities

People

  • Harold W. George

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Boiling Point
  • Chemistry
  • Coefficients
  • Department Of Veterans Affairs
  • Diameters
  • Diffusion Pumps
  • Elements
  • Equations
  • Heat Flux
  • Heat Transfer
  • Heat Transfer Coefficients
  • Liquid Oxygen
  • Materials
  • Nitrogen
  • Physical Properties
  • Surface Properties
  • Thermal Conductivity

Readers

  • Combustion and Flow Dynamics.
  • Surface Coatings Technology.