The Effect of a Novel Coating Technique on Filmwise and Dropwise Condensation of Steam on Horizontal Tubes.

Abstract

Steam condensation heat transfer on smooth horizontal tubes and on a Korodense horizontal tube was experimentally studied at atmospheric pressure and at vacuum. The overall heat transfer coefficient was measured and the outside heat transfer coefficient was determined from the modified Wilson Plot Technique. A hydrophobic coating of a self-assembling monolayer (SAM) with a composition of HS(CH2)15 CH3 promoted excellent dropwise condensation (DWC) on tubes. Coexisting strips with varying widths of filmwise condensation (FWC) and DWC, but at a constant area ratio of 50%, were also investigated.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1996
Accession Number
ADA318765

Entities

People

  • Helen P. Kilty

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Adhesion
  • Barometric Pressure
  • Chemical Synthesis
  • Chemistry
  • Energy
  • Energy Transfer
  • Fluoropolymers
  • Heat Transfer
  • Heat Transfer Coefficients
  • Materials
  • Materials Science
  • Self Assembled Monolayers
  • Surface Chemistry
  • Surface Energy
  • Surface Properties
  • Surface Tension
  • Thermal Conductivity

Fields of Study

  • Chemistry

Readers

  • Combustion and Flow Dynamics.
  • Electrochemical Surface Science