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©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(,201804):,;,;;:;;;:TK01.9::1009-3230(2007)10-0032-05TheHeatTransferEnhancementTechniquesofNanofluidsLIUHui,LIMao-de(ThecollegeofmechanicalengineeringinTongjiUniversity)Abstract:Thispapersumeduptheachievementsofdomesticandabroadinvestigation&developmentaboutheattransferenhancementofnanofluids,generalizeditsinvestigation&development.Theheattransferen2hancementmechanismofnanofluidswasanalyzedfromthephysicalpropertiesandflowingconditions.Themaininfluencingfactorsofitscoefficientofconductivityandviscositywereparticularlydescribed.Theap2plicationinallkindsoffieldswerealsodiscussed,andthetechniquesofnanofluidswouldhaveagoodpros2pectinthefuture.Keywords:nanofluid;heattransferenhancement;physicalproperties;convectionalheattransfer1,,,,,(),Maxwell,,,(:2007-09-10:2007-09-20:,,,,),,1995,ArgonneChoi[1]:,[2]:(1),,,,,(2),;23200710(118)©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(3),,[3],HuDong[4],TiO2,,1.11.1.1Choi,ArgonneEastman[5]CuO-,Cu-Al2O3,Eastman,:,Argonne[6],2001Eastman[7]Cu-,CuO-,PakChoi[8]-A12O3(l3nm)TiO2(27nm),:,;,,XuChoi[9],CuO-A12O3(CuO:23nm,-Al2O3:28nm),2002,KeblinskiChoi[10]Choi[11]Maxwell,Cu-,,,1.1.2:Cuo-Cu-;,,;Cu-,;Lattice-Boatman,,;,[12][13],,2,,,,,:2.1,,,,33200710(118)©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[14]:(1),,(2),11Al2O3(WPmK)4294012373000400.610.2530.145(3),,,,,,,,(),,,,,,,,,(4),,,,(),,,,,(DLA),Witten-Sander,,DL2CA,,,,,,,,,[3][15],,,:keffkf=kp+2kf-2(kf-kp)kp+2kf+(kf-kp)+cp2kfkB3rc(1),keff;kf;kp;rc;cp;;,,(2)43200710(118)©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(nm)(%)Cu-1816vol1545%Eastman[5]Cu-100251030%Xuan[16]Cu-10017.52478%Xuan[1617]Cu-100.3vol40%Eastman[7]-A12O3-134.3vol30%Masuda[18]A12O3-334.3vol-A12O3-Lee[6]SiO2-701.324%[19]-501vol19.6%Xie[20]-501vol12.7%Xie[20]-254.215.9%[21]-0.6422.7%[21]2.1.2,,,,,,,,,,DLVO,,,2.2,,:(1);(2),,,,,,:,;,,,Kuwahara[22]:D=0.022Pe1.7S0.25PeD10D=0.0520.5PeDPeD10(2),D,PeD=Pe0.5DPeclet,,,;,Peclet,D[23]Cu-(Cu100nm),:Nunf=c1(1.0+c2m1Pem2d)Rem3nfPr0.4nf(3),;Renf;Prnf;Ped(3),NunfPedPed53200710(118)©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[6]30MWPm2,X:,,,,[2425]:(1),,(2),(3),(4),,[1]ChoiSUS.EnhancingThermalConductivityofFluidswithNanoparticles,in:SiginerDA,WangHP,eds,DevelopmentsandApplicationsofNon-NewtonianFlows,NewYork:ASME,FED-Vol.231PMD-Vol.66,1995,99-103.[2],.[J]..:993073.[3],.Boltzmann[J].2002.:023150.[4]HuZS,DongJX.StudyonAntiwearandReducingFric2tionAdditiveofNanometerTitaniumOxide.Wear,1998,216:92-96.[5]EastmanJA,ChoiSUS,LiS,ThompsonLJ,LeeS.EnhancedThermalConductivityThroughtheDevelopmentofNanofluids.in:KomarneniS,ParkerJC,WollenbergerH3,eds.,NanophaseandNanocompositeMaterials11,Pittsburgh:MRS,1997,3-11.[6]LeeS,ChoiSUS,LiS.EastmanJA.MeasuringTher2malConductivityofFluidsContainingOxideNanoparti2cles.J.ofHeatTransfer,1999,121:280-289.[7]EastmanJA,ChofSUS,LiS,YuW,ThompsonLJ.AnomalouslyIncreasedEffectiveThermalConductivitiesofEthyleneGlycol-BasedNanofluidsContainingCopperNano2particles.AppliedPhysicsLetters,2001,78(6):718-720.[8]PakBC,ChoY1.HydrodynamicandHeatTransferStudyofDispersedFluidswithSubmicronMetallicOxideParticles.ExperimentalHeatTransfer,1998,11(2):151-170.[9]WangXW,XuXF,ChoiSUS.ThermalConductivityofNanoparticle-FluidMixture.JournalofThermophysicsandHeatTransfer,1999,13(4):474-480.[10]KeblinskiP,PhillpotSR,ChoiSUS,EastmanJA.MechanismsofHeatFlowinSuspensionsofNano-SizedParticles(Nanofuids)IntJHeatMassTransfer,2002.45(4):855-863.[11]YuW,ChoiSUS.TheRoleofInterfacialLayersintheEnhancedThermalConductivityofNanofluids:AReno2vatedMaxwellModel.JournalofNanoparticleResearch,2003,5:167-171.[12],.[J].,2003,24(6):1037-1039.[13],.[J].,2004,252.[14].[J].,7,200.11.[15],.[S]..:013225.[16]XuanY.,LiQ.HeatTransferEnhancementofNanofluids[J].Int.JHeatFluidFlow2000,2158-64.[17],.[J].,2003,54(I)41-46.[18]MasudaH,EbataA,TeramaeK,HishinumaN.Alterna2tionofhermalconductivityandviscosityofliquiddispers2ingultra-fineparticles(dispersionof-A12O3,SiO2andTiO2ultra-fineparticles),NetsuBussei(Japan)1993,4(4),227-233.[19],,.[J].().2007Vol.41No.3P.514-518.[20]XieH,LeeH,YounW,ChoiM.NanofluidscontainingmultiwalledcarbonnanotubesandtheirenhancedthermalconductivitiesAppl.Phys.Leu.2003,95(8)4967-71.[21],,,.SiC[J].,294,20018.[22]F.Kuwahara,A.Nakayama,andH.Koyama,J.HeatTransfer,118,1996:756.[23],.[J].,236,2003.11.[24],,.[J].,2004(6):1004-7948.[25].,,,2004.1.63200710(118)