Study of flow condensation enhancement with hydrophobic and hydrophilic patterns
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Authors
Derby, Melanie Maureen
Issue Date
2013-05
Type
Electronic thesis
Thesis
Thesis
Language
ENG
Keywords
Mechanical engineering
Alternative Title
Abstract
The geometry of the hydrophobic and hydrophilic patterned surfaces was determined with a simple analytical model. The surfaces were studied with one, two, three, and seven hydrophilic areas aligned in the flow direction, and were created by dip-coating surfaces with Teflon AFTM and then plasma etching. Condensation behavior on the patterned surfaces was comparable to that of the Teflon surface, within the uncertainties. The concept was that liquid film would develop on the hydrophilic areas of the patterned surfaces, but the data suggested that instead shear forces played a role sweeping the droplets. Overall, the data suggested that dropwise condensation was promoted on all Teflon coated surfaces, thus enhancing flow condensation heat transfer.
Description
May 2013
School of Engineering
School of Engineering
Full Citation
Publisher
Rensselaer Polytechnic Institute, Troy, NY