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Experimental analysis of boiling enhancement from surfactant addition with electric fields

Author(s)
Mizerak, Jordan (Jordan P.)
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Massachusetts Institute of Technology. Department of Mechanical Engineering.
Advisor
Evelyn N. Wang.
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M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582
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Abstract
This thesis consists of an experimental investigation of the effect of surfactants on the boiling curve of water. Via adsorbtion to the boiling surface, surfactants alter the surface energy interaction during bubble formation at nucleation sites. The surfactants initially enhance the heat transfer coefficient at the onset of nucleate boiling due to higher nucleation density and higher bubble departure frequency. The critical heat flux, on the other hand, generally dropped by nearly 50% in the presence of surfactants. As these surfactants are charged molecules, the application of an electric field was used to increase or decrease adsorption of surfactants on the boiling surface, thereby tuning the level of boiling enhancement during the onset of nucleate boiling and further illustrating the role of surfactants in the boiling process.
Description
Thesis: S.B., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2014.
 
Cataloged from PDF version of thesis.
 
Includes bibliographical references (pages 36-37).
 
Date issued
2014
URI
http://hdl.handle.net/1721.1/92201
Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Publisher
Massachusetts Institute of Technology
Keywords
Mechanical Engineering.

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