Title of article
Walltemperaturemeasurementandheattransfercorrelationofturbulentsupercriticalcarbondioxideflowinverticalcircular/non-circulartubesOriginalResearchArticle
Author/Authors
JongKyuKim، نويسنده , , HongKyuJeon، نويسنده , , JoonSikLee، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2007
Pages
8
From page
1795
To page
1802
Abstract
Experimentaldataarepresentedwhichdescribeheattransfercharacteristicsofturbulentsupercriticalcarbondioxideflowinverticaltubeswithcircular,triangular,andsquarecross-sections.Experimentsareconductedataconstantpressureof8MPaundervariousconditionssuchasinletbulktemperaturesrangingfrom15to32°C,imposedheatfluxesfrom3to180kW/m2,andmassvelocitiesfrom209to1230kg/m2s.ThecorrespondingReynoldsandGrashofnumbersareintherangeof3×104to1.4×105,and5×109to4×1011,respectively.Thetestsectioniscomposedofanentranceregionof0.6mlongandaheatingregionof1.2mlong.Walltemperaturesaremeasuredbythermocouplesinstalledattheoutersurfaceoftheheatingregion.Inordertoidentifytheeffectofthecross-sectionalshapeonthesupercriticalheattransfer,walltemperaturedistributionsinthestreamwisedirectionarecomparedatthesameheatfluxandmassvelocityconditions.Basedonthewalltemperaturedata,animprovedheattransfercorrelation,whichcanbeapplicabletobothforcedconvectionandmixedconvectionregimes,isproposed,andcomparedwithpreviousones.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2007
Journal title
Nuclear Engineering and Design Eslah
Record number
941361
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