ALTITUDE WIND TUNNEL AIR DRYER SYSTEM - Dryer Document for OSHPO.pdf  ALTITUDE WIND TUNNEL AIR DRYER

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    NASAGlennResearchCenter

    ALTITUDEWINDTUNNEL

    AIRDRYERSYSTEMDESCRIPTION

    CurrentBuildings181and182

    April2012

    BobArrighiNASAGlennHistoryProgramWyleInformationServices

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    Building182:TheNaturalGasCompressorBuildingBuilding182 (theNaturalGasCompressorBuilding)wasoriginallyconstructedaspartof theAltitudeWindTunnel (AWT)complex.ThestructurewasoriginallynamedtheAirDryerBuilding.TheAirDryerBuildingwasacomponentoftheAWTsmakeupairsystem.Themakeupairsystemwasdesigned toreplenishtheair insidetheAWTthatwasremovedbytheexhaustscoop.Thetunnelsairstreamwasconditionedtosimulatetheatmosphereathighaltitudes.TheAirDryerBuildingremovedcondensationandcooledtheairtopreventshockstotheairflowasthenewairenteredthetunnel.Thefacility,locatedexternallyoutsidethetunnelssouthwestcorner,consistedoftheairdryertankandtwosetsofcoolingcoils.Theapproximately28ft8in.diametertankwasenclosedinatwostorybrickbuildingwithcoolingcoilslocatedbeforeandafter.ItwasconnectedinfrontandbehindbylargeductstothePrimaryCoilsBuildingandtheSecondaryCoilsBuilding.ThePrimaryCoilsBuildingwas21ft3.5in.wideand25.25in.long.TheSecondaryCoilsBuildingwas24ft8in.wideand33ft8in.long.1

    Figure1Originalairdryersetupwiththesecondarycoils(left),dryertank(center),andprimarycoils(right)(viewedfromthewest),1945(C194512004,NASAGlenn).

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    AmbientairenteredthePrimaryCoilsBuildingfromthesouthandpassedthroughadamper,abankoffilters, the two cooling coils, an eliminator, and another damper,which reduced its temperature toabout40F.2Theairthenenteredtheairdryertankwherefourflatbedsofactivatedaluminalayeredontopofoneanotherabsorbedmoisturetoadewpointof70F.3TheairthenenteredtheSecondaryCoilsBuildingnorthofthedryer;thiscooledtheairtothedesiredtunneltemperatureofapproximately47F.Thedryerscoolingcoilswerecooledby12reciprocatingYorkcompressorslocatedinthenearbyRefrigerationBuilding.Alargeductpermittedairflowbetweentheairdryerandtheprimarycoilsduringcoolingandactivation.4Thealuminahadtobereactivatedbetweenrunsbyrunningsteamheatedairthroughthedryerinthereversedirection. Itrequiredapproximately5hourstoremoveallthemoisturefromthealumina.Thebedswerethencooledbyrunningchilledairthroughthedryer.5The resulting cool, dry airwas pumped to both the AWT and the adjacent Small SupersonicWindTunnels Building through a 48in.diameter pipe. The conditioned airwas introduced into the AWTthroughpressuresensitivevalves intwoportals inthewesterntunnelwall.Thesouthern48in.portalallowedsomeoftheairin,butaportionwasredirectedthroughapipethatnarrowedfrom60to36in.indiameterandwas tied into theRefrigerationBuilding.6Thisuncontaminatedairwas thenpumpedfromtherefrigerationsystemintothetunnelupstreamfromthetestsection.7

    Figure2AirDryerBuildingafteranewdryertankandprimarycoilswereaddedontop(viewedfromthenorthwest),1955(C195539057,NASAGlenn).

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    Duringa1948upgrade,anewairtankwasbuiltontopoftheexistingtankandnewcoolingcoilswereinstalledontopoftheexistingPrimaryCoilsBuilding,replacingthefunctionoftheoriginalequipment.TheoriginalductwasredirectedtothisupperchamberandaUshapedreactivationductconnectedthenorthsideofthisnewchambertothePrimaryCoilsBuilding.8Basedonaerialphotographs, itappearsthat themakeupair linedirected to theRefrigerationBuildingwas removed inAugust1985.9Theairdryertankwasdemolishedsometimepriorto1990.ThePrimaryCoilsBuilding(Bldg.181)becametheFirePumpBuilding.TheSecondaryCoilsBuilding(Bldg.182)becametheGasCompressorBuilding.

    Figure3PlanandelevationdrawingfortheAirDryerBuildingaddition,1948(CD1679,NASAGlenn).

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    Figure4ElevationdrawingsoftheAirDryerBuilding,1948(CD168001,NASAGlenn).

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    Figure5AirDryerBuildingshowingairpipesfeedingtheAWT(left)andtheSmallSupersonicTunnels(right)(viewedfromthesouthwest),1945(C194513046,NASAGlenn).

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    Building182inNovember2011PriortoDemolition

    Figure6FormerNaturalGasCompressorBuilding(NASAC201104754)

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    Figure7Buildings181and182withtheIcingResearchTunnelCoolingTowerinthebackground(NASAC201104756)

    Figure8FormerNaturalGasCompressorBuilding(NASAC201104757)

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    Figure9WaterPipestoBuilding182(NASAC201104758)

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    Figure10NaturalGasAccumulatorsinsideBuilding182(NASAC201104759)

    Figure11NaturalGasAccumulatorsinsideBuilding182(NASAC201104763)

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    Figure12NaturalGasCompressorDriveMotorinsideBuilding182(NASAC201104760)

    Figure13NaturalGasCompressorMotorandGearboxinsideBuilding182(NASAC201104767)

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    Figure14NaturalGasCompressorinsideBuilding182(NASAC201104761)

    Figure15AccumulatorsinsideBuilding182(NASAC201104765)

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    Figure16NaturalGasCompressorControlsinsideBuilding182(NASAC201104762)

    Figure17NaturalGasCompressorControlPanelinsideBuilding182(NASAC201104764)

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    1AirDryer,PrimaryandSecondaryCoilsBuildingPlans.EE510,NACAAERLdrawing,Jan.1943.2AirDryerNo.1,TankReactivationDuctandPrimarySystem.CD104827,NACALewisFlightPropulsionLaboratorydrawing,Oct.1948.3Whitney,ErnestG.:Lecture22AltitudeWindTunnelatAERL.June23,1943,p.2(NASAGlennHistoryCollection,AltitudeWindTunnelCollection).4AWTFacilitiesAdditionAirDryerBuildingPlanandElevation.CD1679,NACAAERLdrawing,May1948.5AWTFacilitiesAdditionAirDryerBuildingPlanandElevation.CD1679,NACAAERLdrawing,May1948.6Whitney,ErnestG.:Lecture22AltitudeWindTunnelatAERL.June23,1943,p.2(NASAGlennHistoryCollection,AltitudeWindTunnelCollection).7Victory,John:NewNACAWindTunnels.AeroDigest,Aug.1,1944.8AWTFacilitiesAdditionAirDryerBuildingPlanandElevation.CD1679,NACAAERLdrawing,May1948.9150PSIGCombustionAirLinesExtensiontoAWTandIRT,DemolitionPlanandReaction.CF1590,NASALewisResearchCenterdrawing,Aug.28,1985.

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