Nucleate pool boiling of nitrogen from artificial cavities

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Authors
Moulson, John Alfred
Subjects
Nucleate boiling
Natural convection
Liquid nitrogen
Cavities
Hysteresis
Advisors
Marto, Paul J.
Date of Issue
1967-09
Date
September 1967
Publisher
Monterey, California. U.S. Naval Postgraduate School
Language
en_US
Abstract
Pool boiling heat transfer of nitrogen from artifical cavities was investigated. Boiling was from circular, one inch diameter horizontal mirror finished copper plates. The single artifical cavity surfaces investigate were: a drilled 0.0043 inch diameter hole, a drilled 0.015 inch diameter hole, and 0.022 nich diameter spark cut cone, and an 0.006 inch diameter spark cut cylindrical hole. The multiple cavity surfaces investigated were: seven 0.015 inch diameter drilled holes, thirteen 0.015 diameter drilled holes, and ninety-seven 0.003 to 0.0045 inch diameter spark cut holes. The depth to diameter ration was about 2.5 for all drilled cavities. The data from a mirror finished surface was compared to that of previous investigations. Exponents for Yamagata's Equation for boiling in the isolated bubble region were determined. The artificial cavities were found to affect the natural convection heat transfer. The size of the cavity appeared to have little effect after incipience of boiling, and larget cavities than previously expected were found to remain active
Type
Thesis
Description
Series/Report No
Department
Mechanical Engineering
Organization
Naval Postgraduate School
Identifiers
NPS Report Number
Sponsors
Funder
Format
84 p.: ill.
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
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