Please use this identifier to cite or link to this item: https://hdl.handle.net/11499/6130
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dc.contributor.authorYakar, Gülay-
dc.contributor.authorKarabacak, Rasim-
dc.date.accessioned2019-08-16T12:04:25Z
dc.date.available2019-08-16T12:04:25Z
dc.date.issued2011-
dc.identifier.issn0145-7632-
dc.identifier.urihttps://hdl.handle.net/11499/6130-
dc.identifier.urihttps://doi.org/10.1080/01457632.2010.483875-
dc.description.abstractIn this study, the effect of holes placed on perforated finned heat exchangers on convective heat transfer was experimentally investigated. Six-millimeter-diameter holes were opened on each circular fin on a heating tube in order to increase convective heat transfer. These holes were placed on the circular fins in such a way as to follow each other at the same chosen angle. The holes created turbulence in a region near the heating tube surface on the bottom of the fin. Experiments were then performed to analyze the effect of this turbulence on heat transfer and pressure drop. These experiments were carried out at five different fin spacings at the angular locations of 30 and 60 in order to determine the optimum fin spacing. Moreover, further experiments were carried out for counterflow and parallel-flow arrangements to determine the effects of the flow directions of the heating fluid and heated fluid. Results show an increase in Nusselt number with increasing modified Reynolds number. In addition, when different fin spacing to heating tube external diameter ratios were examined, at a ratio of 0.414 and angular locations of 30 and 60, 11% and 8.6% increase in heat transfer were obtained, respectively, for parallel-flow arrangement compared to counterflow. For parallel flow, pressure drop values were 3.5% and 3.8% lower at 30 and 60, respectively. © 2011 Taylor and Francis Group, LLC.en_US
dc.language.isoenen_US
dc.relation.ispartofHeat Transfer Engineeringen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectAngular locationsen_US
dc.subjectConvective heat transferen_US
dc.subjectCounterflowen_US
dc.subjectDiameter ratioen_US
dc.subjectFin spacingen_US
dc.subjectFlow arrangementsen_US
dc.subjectFlow directionen_US
dc.subjectHeat transfer and pressure dropen_US
dc.subjectHeated fluidsen_US
dc.subjectHeating tubesen_US
dc.subjectOptimum fin spacingen_US
dc.subjectExperimentsen_US
dc.subjectFins (heat exchange)en_US
dc.subjectHeat exchangersen_US
dc.subjectHeatingen_US
dc.subjectNusselt numberen_US
dc.subjectParallel flowen_US
dc.subjectPressure dropen_US
dc.subjectPressure effectsen_US
dc.subjectReynolds numberen_US
dc.subjectTurbulenceen_US
dc.subjectHeat convectionen_US
dc.titleEffects of different fin spacings on the nusselt number and reynolds number in perforated finned heat exchangersen_US
dc.typeArticleen_US
dc.identifier.volume32en_US
dc.identifier.issue5en_US
dc.identifier.startpage399
dc.identifier.startpage399en_US
dc.identifier.endpage407en_US
dc.authorid0000-0002-1865-7815-
dc.authorid0000-0002-4485-1945-
dc.identifier.doi10.1080/01457632.2010.483875-
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.identifier.scopus2-s2.0-78650766083en_US
dc.identifier.wosWOS:000286635400005en_US
dc.identifier.scopusqualityQ1-
dc.ownerPamukkale University-
item.languageiso639-1en-
item.fulltextNo Fulltext-
item.openairetypeArticle-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.cerifentitytypePublications-
item.grantfulltextnone-
crisitem.author.dept10.07. Mechanical Engineering-
crisitem.author.dept10.07. Mechanical Engineering-
Appears in Collections:Mühendislik Fakültesi Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection
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