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Conference Paper: Fluid flow and heat transfer characteristics of slug bubbly flow in micro condensers

TitleFluid flow and heat transfer characteristics of slug bubbly flow in micro condensers
Authors
KeywordsMicro condenser
Heat transfer coefficient
Condensation flow pattern
Pressure drop
Slug-bubbly flow
Issue Date2007
Citation
Proceedings of the International Conference on Integration and Commercialization of Micro and Nanosystems 2007, 2007, v. A, p. 769-776 How to Cite?
AbstractExperiments were carried out to study the condensation flow pattern in silicon micro condenser using water as medium. Five flow patterns were identified under our experimental conditions. Slug-bubbly flow and droplet/liquid slug flow were found to be the two dominant flows in the micro condenser. These two flow patterns subsequently determined the heat transfer and pressure drop properties of the fluid. It was observed that only slug-bubbly flow existed in low steam mass flow and high heat flux conditions. When the steam mass flow rate increased or the heat flux dropped, mixed flow pattern occurred. An empirical correlation was obtained to predict when the transition of the flow pattern from slug-bubbly flow to mixed flow could appear. In the slug-bubbly flow regime, heat transfer coefficient and pressure drop in the micro condensers were studied. It was found that micro condensers with smaller channels could exhibit higher heat transfer coefficient and pressure drop. At constant heat flux, increasing the steam mass flow rate resulted in a higher heat transfer coefficient and also the pressure drop. Copyright © 2007 by ASME.
Persistent Identifierhttp://hdl.handle.net/10722/255952

 

DC FieldValueLanguage
dc.contributor.authorHu, J. S.-
dc.contributor.authorChao, Christopher Y.H.-
dc.date.accessioned2018-07-16T06:14:09Z-
dc.date.available2018-07-16T06:14:09Z-
dc.date.issued2007-
dc.identifier.citationProceedings of the International Conference on Integration and Commercialization of Micro and Nanosystems 2007, 2007, v. A, p. 769-776-
dc.identifier.urihttp://hdl.handle.net/10722/255952-
dc.description.abstractExperiments were carried out to study the condensation flow pattern in silicon micro condenser using water as medium. Five flow patterns were identified under our experimental conditions. Slug-bubbly flow and droplet/liquid slug flow were found to be the two dominant flows in the micro condenser. These two flow patterns subsequently determined the heat transfer and pressure drop properties of the fluid. It was observed that only slug-bubbly flow existed in low steam mass flow and high heat flux conditions. When the steam mass flow rate increased or the heat flux dropped, mixed flow pattern occurred. An empirical correlation was obtained to predict when the transition of the flow pattern from slug-bubbly flow to mixed flow could appear. In the slug-bubbly flow regime, heat transfer coefficient and pressure drop in the micro condensers were studied. It was found that micro condensers with smaller channels could exhibit higher heat transfer coefficient and pressure drop. At constant heat flux, increasing the steam mass flow rate resulted in a higher heat transfer coefficient and also the pressure drop. Copyright © 2007 by ASME.-
dc.languageeng-
dc.relation.ispartofProceedings of the International Conference on Integration and Commercialization of Micro and Nanosystems 2007-
dc.subjectMicro condenser-
dc.subjectHeat transfer coefficient-
dc.subjectCondensation flow pattern-
dc.subjectPressure drop-
dc.subjectSlug-bubbly flow-
dc.titleFluid flow and heat transfer characteristics of slug bubbly flow in micro condensers-
dc.typeConference_Paper-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1115/MNC2007-21102-
dc.identifier.scopuseid_2-s2.0-34547980063-
dc.identifier.volumeA-
dc.identifier.spage769-
dc.identifier.epage776-

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