The influence of Fin Height and Wall Conductivity on Integral-Fin Tubes During Steam Condensation

Abstract

Heat transfer performance of horizontal, integral-fm tubes made of copper, aluminum, copper-nickel, and stainless steel was evaluated using a boiler and steam condenser assembly. Testing was done at vacuum and atmospheric pressure conditions. The tubes tested had an inner diameter of 12.7mm, a root diameter of 13.88mm, and fin heights ranging from 0.5mm to 1.5mm, in 0.25mm increments. The outside heat transfer coefficient was determined first by finding the overall heat transfer coefficient, Uo, then by using the Modified Wilson Plot Technique. The results indicated that the performance of a finned tube is very dependent on fin height and tube material. Moreover, the results were compared with the predictive models of Beatty and Katz, Rose, Adamek and Webb, and Honda et al., with a modified version of the Rose model demonstrating the best predictive capabilities.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1994
Accession Number
ADA280597

Entities

People

  • David W. Meyer

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Counter IED
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aluminum
  • Barometric Pressure
  • Coefficients
  • Data Analysis
  • Diameters
  • Heat Transfer
  • Heat Transfer Coefficients
  • Materials
  • Measurement
  • Mechanical Engineering
  • Metals
  • Plastic Explosives
  • Predictive Modeling
  • Stainless Steel
  • Thermal Conductivity
  • Vapors
  • Water

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  • Combustion and Flow Dynamics.