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dc.contributor.advisorMarto, P.J.
dc.contributor.advisorWanniarachchi, A.S.
dc.contributor.authorGeorgiadis, Ioannis V.
dc.dateSeptember 1984
dc.date.accessioned2012-11-19T23:50:03Z
dc.date.available2012-11-19T23:50:03Z
dc.date.issued1984-09
dc.identifier.urihttp://hdl.handle.net/10945/19343
dc.description.abstractFilmwise condensation heat-transfer measurements if steam were made on horizontal tubes under vacuum and near-atmospheric pressures. Data were taken for a smooth tube and for 21 tubes which contained rectangularly-shaped, low integral fins. The fin geometry was systematically varied in order to investigate the dependence of the steam-side heat-transfer coefficient on fin spacing, thickness and height. The condensation process was found to be most sensitive to fin spacing and to be weakly dependent on fin thickness. When the fin height was increased from1.0 to 2.0 mm, the increase in the heat-transfer coefficient was about 20 percent, while the increase in condensing area was 51 percent. The best performing finned tube had a fin spacing of 1.5 mm, a fin thickness of 1.0 mm and a fin height of 2.0 mm. It showed an enhancement over the smooth tube of between 4 to 5 under vacuum conditions and around 6 at atmospheric conditions. Thus, the use of finned tubes may result in a significant reduction in the size and weight of present-day steam condensers.en_US
dc.description.sponsorshipNational Science Foundation, Division of Engineeringen_US
dc.description.urihttp://archive.org/details/filmwisecondensa1094519343
dc.language.isoen_US
dc.rightsCopyright is reserved by the copyright owneren_US
dc.subject.lcshMechanical engineeringen_US
dc.titleFilmwise condensation of steam on low integral-finned tubesen_US
dc.typeThesisen_US
dc.contributor.corporateNaval Postgraduate School (U.S.)
dc.contributor.departmentMechanical Engineering
dc.subject.authorSteamen_US
dc.subject.authorCondensationen_US
dc.subject.authorFilmwiseen_US
dc.subject.authorTubeen_US
dc.subject.authorLow-integral finen_US
dc.subject.authorHeat-transfer coefficienten_US
dc.subject.authorEnhancementen_US
dc.description.funderMEA82-03567en_US
dc.description.serviceLieutenant, Hellenic Navyen_US
dc.identifier.npsreportNPS-69-84-008
etd.thesisdegree.nameM.S. in Mechanical Engineeringen_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.disciplineMechanical Engineeringen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US
dc.description.distributionstatementApproved for public release; distribution is unlimited.


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