微型燃气轮机回热器燃气腔结构优化

:2005-06-23;:2005-10-19:863(2002AA503020);(91056):(1972-),,,.:1001-2060(2006)01-0010-04,,,(,710049):100kW,L,,=5L=370mm,:;;;:TK479:A1,21[1],[2],P,,,,,[35],30%[6],,CC(CrossCorrugated)CW(CrossWavy)CU(CorrugatedUndulated),,,[79],,122.1121120061JOURNALOFENGINEERINGFORTHERMALENERGYANDPOWERVol.21,No.1Jan.,2006,,,:,,,2,,L,,2100kW100kW,,1:1FLUENT,L,=35L=200400mm,,,2.2k-,k-,SIM2PLE:9(u)9x+9(v)9y+9(w)9z=99x(99x)+99y(99y)+99z(99z)+S(1),S:(1):=1,=0,S=0(2)(2):x:=u,=eff=+1,S=-9p9x+99x(eff9u9x)+99y(eff9v9x)+99z(eff9w9x)y:=v,=eff=+1,S=-9p9y+99x(eff9u9y)+99y(eff9v9y)+99z(eff9w9y)z:=w,=eff=+1,S=-9p9z+99x(eff9u9z)+99y(eff9v9z)+99z(eff9w9z)(3)(3):=k,=+tPk,S=Gk-(4)(4):=,=PPr+tPS=(c1Gk-c2)Pk(5):;t=ck2P;=cDK3P2Pl;Gk=t29u9x2+9v9y2+9w9z2+9u9y+9v9x2+9u9z+9w9x29v9z+9w9y2(6)Prandtlci[10]FLUENT,(Wall),(Symmetry),(VelocityInletBoundaryCondi2tion),(Outflow)[11]32.3,,,111,:(hex),(TetPHybird)120,33,,,;,,,Su,:Su=Ni=1(u-um)2P(N-1)Pum(7):u-,mPs;um-,mPs;N-45,220mm,,35,L200400mmL200mm,300mm,340mm,370mm400mm,=345,4,54,L=370mm,=45,,,40%L=400mm,=5L=200mm,=3,,,28%26.8%67L=400mm,=3L=370mm,=5,,6(L=400mm,=3)7(L=370mm,=5)8(L=370mm,=5)212006,3%4%[12],,,L=370mm,=5,,89L=370mm,=59(L=370mm,=5)4100kW,:(1),L=370mm,=5(2),,,,Su7.5%(3):[1].[J].,2000,28(5):27-28.[2],.[J].,2001,25(12):53-56.[3]MCDONALDCF.Theincreaseroleofheatexchangersingasturbineplants[A].ProceedingsofASMECogenturboCongress-IGTI[C].NewYork:ASME,1989.89-103.[4]MCDONALDCF.Heatexchangerubiguityinadvancedgasturbinecy2cles[A].ProceedingsofASMECogenturboCongress-IGTI[C].NewYork:ASME,1994.681-703.[5]MCDONALDCF,WILSONDG.Theutilizationofrecuperatedandre2generatedenginecyclesforhighefficiencygasturbinesinthe21stcen2tury[J].JournalofAppliedThermalEnergy,1996,16(8P9):635-653.[6]MCDONALDCF.Heatrecoveryexchangertechnologyforverysmallgasturbines[J].IntJournalofTurboandJetEngines,1996,13(4):239-261.[7]UTRIAINENE,SUNDENB.Numericalanalysisofaprimarysurfacetrapezoidalcrosswavyduct[J].InternationalJournalofNumericalMethodsforHeat&FluidFlow,2000,10:634-648.[8]UTRIAINENE,SUNDENB.Anumericalinvestigationofprimarysur2faceroundedcrosswavyducts[J].HeatandMassTransfer,2002,38(7P8):537-542.[9]MIRUNITIKENICHI,SUZUKIYUJI,KASSGINOBUHIDE.Heattransferandfluidflowcharacteristicsofrecuperatorswithobliquewavywalls[J].BHenPTransactionsoftheJapanSocietyofMechanicalEngineers(PartB),2004,70:2604-2611.[10].[M].:,2002.[11].-CFD[M].:,2004.[12]WANGQW,LUOLQ,LIANGHX,etal.Experimentalinvestigationonheattransferandpressuredropinamicrotubinerecuperatorwithcross2wavyprimarysurfacechannels[R].ASMETurboExpo2005,GT2005-68255.()90MWGasTurbineWorld200578,,,20068MHI()30MWM251SMHI,30MW,,,()311,:NO=AnOverviewoftheResearchonReductionReactionsInvolvingSootandNO[,]PXUBin,XIEGuang2lu,FANWei2dong,etal(InstituteofMechanical&PowerEngineeringundertheShanghaiJiaotongUniversity,Shanghai,China,PostCode:200240)PPJournalofEngineeringforThermalEnergy&Power.-2006,21(1).-14,9OverthelastthreedecadesreductionreactionsinvolvingsootandNOhaveattractedtheattentionofenvironmentalre2searchworkersworldwide.Theauthorshavegivenanoverviewoftherecentresearchprogressontheabove2mentionedre2ductionreactionswithanemphasisonthereductionreactionmechanismofpureNOandsoot.Theexperimentalinstru2mentsnowadaysbeingoftenusedarediscussed.Variouskindsofreactioninstrumentationcanbeemployedfordifferentrangesofreaction2temperatureandthevariousproductsthusobtainedasaresultoftheNO2sootreactionarealsoquitedifferent.Atlowtemperatures(lessthan300)anadsorptionreactionwillmainlytakeplace,whileathightempera2turesareductionreactionoccurs.Finally,abriefdescriptionisgivenoftheimpactofthedifferentatmospheresandthepresenceofcatalystsonreactionresults.DifferentreactionatmosphereswillhavedifferentimpactsonNO2sootreactions.Allsubstances,whichpromotethegenerationofanactivatedpotentialonasootsurface,caninvariablybeconducivetotheprogressofreactions.Keywords:naturalgas,soot,nitricoxide,desorption,surfacebasegroups=High2temperatureMaterialsforHeliumGasTurbines[,]PJIGui2ming,WANGChong(HarbinNo.703ResearchInstitute,Harbin,China,PostCode:150036)PPJournalofEngineeringforThermalEnergy&Power.-2006,21(1).-59Duetoitsoperatingfeaturesaheliumgasturbineisconstrainedinitsuseofconstructionmaterials,whichmustcopewithspecificoperatingconditions,environmentalandmaintenanceservicefactors.Thekeyproblemstobeconsideredduringmaterialselectioninclude:longcreeplife,high2temperaturecorrosionandradiationeffects.Brieflydescribedarethema2jorcandidatematerialsusedforthepartsandcomponents,suchasblades,discs,statorsandshafting,ofHTGR2GT(high2temperaturegascooledreactor2heliumgasturbine)basedpowergenerationplants.Itisnotedthatorientedcrys2tallizationandsinglecrystalnickel2basedalloyswithprotectivecoatingsarethebestcandidatematerialsforturbinebladesofcurrentlyprevalentoperatingparameters.Asforthedesignschemeofacooleddisc,nickel2basedsuperheat2resistantalloysareconsideredeligiblematerials.Foruseattemperaturesbelow600alloyIN718canbeselectedwithU720LIandMA6000beingdestinedforstillhighertemperatures.Keywords:heliumgasturbineunit,high2temperatu