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Advanced Heat Transfer, Second Edition PDF

537 Pages·2018·12.399 MB·English
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Advanced Heat Transfer Second Edition Advanced Heat Transfer Second Edition Greg F. Naterer CRCPress Taylor&FrancisGroup 6000BrokenSoundParkwayNW,Suite300 BocaRaton,FL33487-2742 ©2018byTaylor&FrancisGroup,LLC CRCPressisanimprintofTaylor&FrancisGroup,anInformabusiness NoclaimtooriginalU.S.Governmentworks Printedonacid-freepaper InternationalStandardBookNumber-13:978-1-138-57932-3(Hardback) Thisbookcontainsinformationobtainedfromauthenticandhighlyregardedsources.Reasonableeffortshavebeenmade topublishreliabledataandinformation,buttheauthorandpublishercannotassumeresponsibilityforthevalidityofall materialsortheconsequencesoftheiruse.Theauthorsandpublishershaveattemptedtotracethecopyrightholdersofall materialreproducedinthispublicationandapologizetocopyrightholdersifpermissiontopublishinthisformhasnot beenobtained.Ifanycopyrightmaterialhasnotbeenacknowledgedpleasewriteandletusknowsowemayrectifyinany futurereprint. ExceptaspermittedunderU.S.CopyrightLaw,nopartofthisbookmaybereprinted,reproduced,transmitted,orutilized inanyformbyanyelectronic,mechanical,orothermeans,nowknownorhereafterinvented,includingphotocopying, microfilming, and recording, or in any information storage or retrieval system, without written permission from the publishers. Forpermissiontophotocopyorusematerialelectronicallyfromthiswork,pleaseaccesswww.copyright.com(http:// www.copyright.com/) or contact the Copyright Clearance Center, Inc. (CCC), 222 Rosewood Drive, Danvers, MA 01923,978-750-8400.CCCisanot-for-profitorganizationthatprovideslicensesandregistrationforavarietyofusers.For organizationsthathavebeengrantedaphotocopylicensebytheCCC,aseparatesystemofpaymenthasbeenarranged. TrademarkNotice:Productorcorporatenamesmaybetrademarksorregisteredtrademarks,andareusedonlyfor identificationandexplanationwithoutintenttoinfringe. LibraryofCongressCataloging-in-PublicationData Names:Naterer,GregF.,author. Title:Advancedheattransfer/GregNaterer. Description:Secondedition.|BocaRaton:Taylor&Francis,CRCPress, 2018.|Includesbibliographicalreferencesandindex. Identifiers:LCCN2017058762|ISBN9781138579323(hardback)|ISBN 9781351262248(E-book) Subjects:LCSH:Heat--Transmission. Classification:LCCTJ260.N342852018|DDC621.402/2--dc23 LCrecordavailableathttps://lccn.loc.gov/2017058762 VisittheTaylor&FrancisWebsiteat http://www.taylorandfrancis.com andtheCRCPressWebsiteat http://www.crcpress.com VisittheeResources:https:////www.crcpress.com//9781138579323 Tomywife,Josie;ourchildren,Jordan,Julia,andVeronica; andmyparents,foralloftheirloveandsupport. Contents Preface................................................................................... xiii Author.................................................................................... xv ListofSymbols..........................................................................xvii 1. Introduction........................................................................... 1 1.1 FundamentalConceptsandDefinitions........................................ 2 1.2 ConservationofEnergy ........................................................ 4 1.3 ThermophysicalProperties..................................................... 5 1.3.1 ThermodynamicProperties............................................ 5 1.3.2 KinematicProperties................................................... 7 1.3.3 TransportProperties................................................... 8 1.4 HeatConduction.............................................................. 10 1.5 Convection .................................................................... 12 1.6 ThermalRadiation............................................................. 14 1.7 PhaseChangeHeatTransfer .................................................. 16 1.8 MassTransfer ................................................................. 17 Problems.............................................................................. 19 References ............................................................................ 21 2. HeatConduction..................................................................... 23 2.1 Introduction................................................................... 23 2.2 One-DimensionalHeatConduction........................................... 24 2.2.1 HeatConductionEquation............................................24 2.2.2 ThermalResistance ...................................................27 2.2.3 FinsandExtendedSurfaces...........................................33 2.3 MultidimensionalConduction ................................................ 37 2.3.1 CartesianCoordinates ................................................37 2.3.2 OrthogonalCurvilinearCoordinates..................................39 2.4 MethodofSeparationofVariables............................................ 43 2.5 ConformalMapping........................................................... 47 2.6 TransientHeatConduction.................................................... 54 2.6.1 LumpedCapacitanceMethod.........................................54 2.6.2 Semi-InfiniteSolid ....................................................56 2.6.3 UnidirectionalConduction............................................58 Problems.............................................................................. 60 References ............................................................................ 66 3. Convection........................................................................... 67 3.1 Introduction................................................................... 67 3.2 GoverningEquations.......................................................... 68 3.2.1 ConservationofMass(ContinuityEquation).........................69 vii viii Contents 3.2.2 ConservationofMomentum(Navier–StokesEquations) .............70 3.2.3 TotalEnergy(FirstLawofThermodynamics)........................73 3.2.4 MechanicalEnergyEquation..........................................75 3.2.5 InternalEnergyEquation .............................................76 3.2.6 TransformationtoDimensionlessVariables ..........................78 3.2.7 BuckinghamPiTheorem..............................................82 3.3 ConvectionBoundaryLayers ................................................. 83 3.3.1 BoundaryLayerEquations............................................83 3.3.2 HeatandMomentumAnalogies......................................87 3.3.3 EvaporativeCooling..................................................89 3.4 ExternalForcedConvection................................................... 90 3.4.1 ScaleAnalysis.........................................................90 3.4.2 IntegralAnalysis......................................................91 3.4.3 ExternalFlowoveraFlatPlate .......................................93 3.5 CylinderinCrossFlow........................................................ 99 3.6 OtherExternalFlowConfigurations .........................................101 3.6.1 Sphere............................................................... 101 3.6.2 TubeBundles ....................................................... 102 3.7 InternalFlow.................................................................103 3.7.1 PoiseuilleFlowinCircularTubes................................... 103 3.7.2 NoncircularDucts................................................... 111 3.8 FreeConvection..............................................................113 3.8.1 BoundaryLayerFlowonaVerticalFlatPlate...................... 113 3.8.2 BodyGravityFunctionMethod..................................... 118 3.8.3 SphericalGeometries................................................ 122 3.8.4 TiltedRectangularEnclosures ...................................... 124 3.9 IntroductiontoTurbulence...................................................124 3.9.1 TurbulenceSpectrum ............................................... 125 3.9.2 ReynoldsAveragedNavier–StokesEquations...................... 127 3.9.3 EddyViscosity...................................................... 129 3.9.4 MixingLength ...................................................... 129 3.9.5 Near-WallFlow..................................................... 130 3.9.6 OneandTwoEquationClosureModels............................ 131 3.10 EntropyandtheSecondLaw.................................................132 3.10.1 FormulationofEntropyProduction ................................ 132 3.10.2 ApparentEntropyProductionDifference........................... 136 3.10.3 DimensionlessEntropyProductionNumber ....................... 139 Problems.............................................................................141 References ...........................................................................148 4. ThermalRadiation.................................................................. 151 4.1 Introduction..................................................................151 4.2 ElectromagneticSpectrum....................................................152 4.3 RadiationIntensity...........................................................153 4.4 BlackbodyRadiation .........................................................156 4.5 RadiativeSurfaceProperties .................................................159 4.6 RadiationExchangebetweenSurfaces .......................................163 4.7 ThermalRadiationinEnclosures.............................................166 Contents ix 4.7.1 RadiationExchangeataSurface.................................... 167 4.7.2 RadiationExchangebetweenSurfaces.............................. 168 4.7.3 Two-SurfaceEnclosures............................................. 170 4.8 SolarRadiation...............................................................172 4.8.1 ComponentsofSolarRadiation..................................... 172 4.8.2 SolarAngles ........................................................ 176 4.8.3 IncidentSolarRadiation ............................................ 179 4.9 SolarCollectors...............................................................182 4.9.1 CollectorEfficiencyandHeatLosses ............................... 182 4.9.2 TemperatureDistribution........................................... 185 4.9.3 HeatRemovalFactor................................................ 187 Problems.............................................................................190 References ...........................................................................193 5. Gas–LiquidTwo-PhaseFlows...................................................... 195 5.1 Introduction..................................................................195 5.2 PoolBoiling ..................................................................196 5.2.1 PhysicalProcesses................................................... 196 5.2.2 NucleatePoolBoiling............................................... 198 5.2.3 FilmPoolBoiling.................................................... 200 5.3 BoilingonInclinedSurfaces..................................................201 5.4 ForcedConvectionBoilinginExternalFlow.................................203 5.4.1 OveraFlatPlate .................................................... 203 5.4.2 OutsideaHorizontalTube.......................................... 203 5.4.3 OtherSurfaceConfigurations....................................... 204 5.5 Two-PhaseFlowinVerticalTubes...........................................205 5.5.1 VerticalFlowRegimes.............................................. 205 5.5.2 DynamicsandHeatTransferofBubbleFlow....................... 206 5.5.3 AnnularFlowMomentumandHeatTransfer...................... 209 5.6 InternalHorizontalTwo-PhaseFlows........................................213 5.6.1 FlowRegimesinHorizontalTubes................................. 213 5.6.2 DispersedBubbleFlow ............................................. 215 5.6.3 One-DimensionalModelofStratifiedFlow......................... 217 5.6.4 PlugandAnnularFlowCorrelations ............................... 220 5.6.5 Multi-RegimeNusseltNumberCorrelations........................ 221 5.7 LaminarFilmCondensation..................................................222 5.7.1 AxisymmetricBodies ............................................... 223 5.7.2 OtherConfigurations ............................................... 226 5.8 TurbulentFilmCondensation................................................227 5.8.1 OveraVerticalPlate................................................ 227 5.8.2 OutsideaSphere.................................................... 228 5.9 ForcedConvectionCondensation............................................231 5.9.1 InternalFlowinTubes.............................................. 231 5.9.2 OutsideaSingleHorizontalTube................................... 234 5.9.3 FinnedTubes........................................................ 236 5.10 ThermosyphonsandHeatPipes .............................................236 5.10.1 TransportProcesses................................................. 236

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