Keywords
Condensation; Film coefficients (Physics); Transmission of Heat
Abstract
This theoretical study has been undertaken in order to provide insights into the steady two-dimensional laminar film condensation heat transfer on an isothermal vertical flat wall and a cylindrical surface. Condensation is given to both the pure water vapor and water vapor-air mixture. Only the saturated state of the bulk vapor is considered.
The effects of liquid-vapor resistance, gas-solubility in the condensate, thermal diffusion and diffusion thermo are neglected. The presence of air as non-condensing gas has been fully accounted for in this study. The physical properties of the condensate liquid are taken to be those of saturated water at the appropriate temperature. The properties of the vapor region are considered to be constant except for the density of the mixture.
The method of solution is based on the numerical techniques of laminar boundary layer theory. By using liquid-vapor interface matching, an approximate integral solution is obtained.
In this study, it was found that the presence of a small amount of air as a non-condensing gas in the water vapor-air mixture plays a decisive role in decreasing the condensation heat transfer. The decrease is more pronounced at lower bulk temperature, TV, and higher values of (TV-TW). As the mass fraction of air in the bulk, W∞, increases, the heat transfer decreases monotonically.
Notes
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Graduation Date
1983
Advisor
Bishop, Patricia J.
Degree
Master of Science (M.S.)
College
College of Engineering
Degree Program
Engineering
Format
Pages
86 p.
Language
English
Rights
Public Domain
Length of Campus-only Access
None
Access Status
Masters Thesis (Open Access)
Identifier
DP0014086
STARS Citation
Ng, Chick-Hong, "Laminar Film Condensation Heat Transfer of Water Vapor-Air Mixture on a Vertical Flat Plate and Cylindrical Surface" (1983). Retrospective Theses and Dissertations. 704.
https://stars.library.ucf.edu/rtd/704
Contributor (Linked data)
Bishop, Patricia J. [VIAF]
Bishop, Patricia J. [LC]
University of Central Florida. College of Engineering [VIAF]
Accessibility Status
Searchable text