airpak培训教材

INTRODUCING...AirflowModelingSoftwareforHVACSystemDesignVersion2.0!Airpak2.0istheWaveoftheFutureinHVAC•GreaterconnectivityandmorerapidmodelbuildingthroughimprovedtranslationofCADsurfacesandcurves•Moreconvenience–Macrostobuildmodelseasily•Airinletdiffusers•Solarloadcalculator•Box-it•AtmosphericboundarylayerBC–Automaticreportwriting–Globalunitsswitch(SI/British)–MoreflexiblemoisturecontentBCs•Fastercomputing–Grid-to-gridsolutioninterpolation–Zoom-incapability–Networkparallelcapability•Greatermarketingpunchwithdirectexportofanimations(AVI,animatedGIF,MPEG,FLI)•Morephysics–Addedturbulencemodels•Indoorzero-equationmodel•RNGk-εmodel–DiscreteordinatesradiationmodelReinforcingAirpak’sease-of-use,accuracy/reliability,andfocusonthehvacindustryCADImport(IGESsurfaces+curves)•WorkwithIGESfiles(surfacesandcurves)fromanyCADpackage•ImportIGESfilesdirectlyintoAirpak,•Trim/blank/deleteunnecessarysurfaces•CreateAirpakobjectsoutofselectedsurfaces(eitherasindividualselectionsorgroupsoffamilies)CADsystemTranslatorReadintoAirpakConverttoAirpakobjectsCADimportoptions(IGESsurfaces+curves)MinimumFeaturesize-setsglobaltolerancethatcontrolsthelevelofdetailtransferred,objectsbelownotimported.CanalsoremoveCADgeometrythatissmallerthanaspecifiedsizeafterimport.UseautoscaletofittheroomtotheCADgeometry.CanscaleafterimportbyusingroomautoscaleOptionsavailableviaModel/CADImport/OptionsonimportingyourCADGeometryWhatisaMacro?•AMacroisaquickandeasywaytogenerateanassemblyofobjectsorcalculatedatafromwelldefinedformulae•Macrosspeedupmodelbuildinginseveralmainareas–Commonrepetitivetasks•Definingclosedenclosurefrom6blocks/plates–Specificapplicationstoincreaseproductivity•Airinletdiffusers–Correlationdataavailable•SolarheatfluxEnclosedBoxMacro•Generatessixpartitionorwallobjectsthatencloseahexahedralregion…savingtime!DiffuserMacros•Impracticaltomodeldetailsofairinletdiffusers•Usediffuserperformancedatafrommanufacturerandknowledgeofjetbehaviortomodeljet•Throw+terminalvelocityusedtocomputeeffectivearea•BasedonASHRAERP-1009researchthatevaluatedmomentumandboxmethodsforsimplifieddiffuserBCsDiffuserMacros•Impracticaltomodeldetailsofairinletdiffusers•Usediffuserperformancedatafrommanufacturerandknowledgeofjetbehaviortomodeljet•Throw+terminalvelocityusedtocomputeeffectivearea•BasedonASHRAERP-1009researchthatevaluatedmomentumandboxmethodsforsimplifieddiffuserBCs•Usesave/loadoptiontocreatemultiplediffusersofsimilartype/flow/performancesincesourcetermsarecomputedonlywhendiffusermacroacceptbuttonispressed•RecommendcreatinginternalpartDiffuserMacrosSlotNozzleVortexValveMomentumMethod•Vel.Decayconst.•EffectiveAreaRatioMomentumMethod•Vel.Decayconst.•EffectiveAreaRatioSupplyConditions•FlowRate•Temperature•Species•Turbulence•FreeAreaRatio/Dir.(perforatedonly)MomentumMethod•Vel.Decayconst.•Att.Jetcorrection•EffectiveAreaRatioMomentumMethod•Vel.Decayconst.•EffectiveAreaRatioSupplyConditions•FlowRate•Temperature•Species•Turbulence•SwirlAngleSupplyConditions•FlowRa•JetCon•Tempe•Species•TurbuleteeAngleraturenceMomentumMethod•Vel.Decayconst.•EffectiveAreaRatioPerformanceData•Throw•TerminalVelocitySupplyConditions•FlowRate•Direction•Temperature•Species•Turbulence•FreeAreaRatioRoomConditions•TemperatureRoomConditions•TemperatureRoomConditions•TemperatureRoomConditions•TemperatureRoomConditions•TemperaturePerformanceData•Throw•TerminalVelocityPerformanceData•Throw•TerminalVelocityPerformanceData•Throw•TerminalVelocityPerformanceData•Throw•TerminalVelocityDisplacement•Circular•Rectangular•Cylindrical•Full•Semi•QuarterCeiling•Round•Square•1-way•2-way•3-way•4-way•PerforatedGrille•Circular•RectangularSupplyConditions•FlowRate•Direction•Temperature•Species•TurbulenceSupplyConditions•FlowRate•Direction•Temperature•Species•TurbulenceSupplyConditions•FlowRate•Direction•Temperature•Species•Turbulence•FreeAreaRatioMomentumMethodOrBoxMethod?RoomConditions•TemperatureRoomConditions•TemperatureBoxMethod•BoxSize•RoomSpecies•EntrainmentFactor(velocityprofilesmaybesubstitutedifavailable)SolarHeatLoadCalculatorMacro•Airpak2.0cancalculatesolarfluxonexteriorsurfacesaccountingforday,time,geographicallocation,andsurfaceorientation•SolarfluxprintedintheAirpakmessagewindow•UsethatsolarfluxasaboundaryconditionwhereappropriateAtmosphericBoundaryLayerMacro•Generatesopeningobjectwithprofilesforvelocityandturbulenceboundaryconditions•Specifywinddirectionandspeedmeasuredatmeteorologicalmeasurementstation•Specifylocalterrainconditionsδδδδδ≥⎟⎟⎠⎞⎜⎜⎝⎛⎟⎠⎞⎜⎝⎛⎟⎟⎠⎞⎜⎜⎝⎛=yHUyyHUyUaaaifif)(metmetmetmetmetmetmetmet5.02*μcuk=yuκε3*=)/ln(*metmetsHUuκ≡TurbulenceprofilescanbeoverriddenbyuserPolygonalDuctMacro•Firstcreateatleastthreewires•Numberofsidesequalsnumberofwires•Macrousesthenon-uniformpolygonblockobjecttocreatesides•Selectwirestobeused•ChoosewhethertoclosestartingorfinishingendsUnitSystems•SIUnitsaredefault•Usermayselectotherunitsusingunitseditor•UsermaycreatenewcustomizedunitsSpeciesConcentrationInputUnitChoices•Severalwaystospecifyconcentrationlevelsatinlets/surfacesRelativeHumidityMassFractionMoistureContent(me