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Experimental investigation the nanofluids heat transfer characteristics in horizontal spirally coiled tubes

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dc.contributor.authorNaphon P.
dc.date.accessioned2021-04-05T03:24:14Z
dc.date.available2021-04-05T03:24:14Z
dc.date.issued2016
dc.date.issuedBE2559
dc.description.abstractThe heat transfer and flow characteristics of the nanofluids in the horizontal spirally coiled tubes are investigated. The spirally coiled tubes are fabricated by bending a 8.50 mm inner diameter straight copper tube into a spiral-coil of five turns. The test section with three different curvature ratios of 0.035, 0.043, 0.06 are tested. Effects of curvature, nanofluids concentration and hot water temperature on the nanofluids heat transfer characteristics and pressure drop are considered. The results showed that the Nusselt number is about 21.29%, 29.02%, 34.07% for (0.01%, 0.025%, 0.05% by volume concentration, respectively) higher than the Nusselt number obtained for water as working fluid. However, the friction factor of nanofluids as working fluid increase slightly compared that of water as working fluid. Two correlations for predicted the Nusselt number and friction factor in the spirally coiled tube under constant wall temperature are proposed. © 2015 Elsevier Ltd.All rights reserved.
dc.format.mimetypeapplication/pdf
dc.identifier.citationInternational Journal of Heat and Mass Transfer. Vol 93, (2016), p.293-300
dc.identifier.doi10.1016/j.ijheatmasstransfer.2015.09.089
dc.identifier.issn179310
dc.identifier.other2-s2.0-84944909805
dc.identifier.urihttps://hdl.handle.net/20.500.14740/5666
dc.rights.holderScopus
dc.subject.otherBending (forming)
dc.subject.otherFluids
dc.subject.otherFriction
dc.subject.otherHeat transfer
dc.subject.otherNusselt number
dc.subject.otherTubes (components)
dc.subject.otherConstant wall temperature
dc.subject.otherExperimental investigations
dc.subject.otherFriction factors
dc.subject.otherHeat transfer and flows
dc.subject.otherHeat transfer characteristics
dc.subject.otherInner diameters
dc.subject.otherNanofluids
dc.subject.otherVolume concentration
dc.subject.otherNanofluidics
dc.titleExperimental investigation the nanofluids heat transfer characteristics in horizontal spirally coiled tubes
dc.typeArticle
dspace.entity.typePublication
swu.datasource.scopushttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84944909805&doi=10.1016%2fj.ijheatmasstransfer.2015.09.089&partnerID=40&md5=4906179adb5c882574c41a94e424cbc8

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