The influence of fin height and wall conductivity on integral-fin tubes during steam condensation
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Authors
Meyer, David William
Subjects
Advisors
Marto, P.J.
Date of Issue
1994-03
Date
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
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
Type
Thesis
Description
Series/Report No
Department
Mechanical Engineering
Organization
Naval Postgraduate School
Identifiers
NPS Report Number
Sponsors
Funder
Format
151 p.;28 cm.
Citation
Distribution Statement
Approved for public release; distribution is unlimited.