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《Effect of damper and heat source on wind catcher natural ventilation performance》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫。
1、EnergyandBuildings38(2006)939–948www.elsevier.com/locate/enbuildEffectofdamperandheatsourceonwindcatchernaturalventilationperformanceAbbasAliElmualimInnovativeConstructionResearchCentre,SchoolofConstructionManagement&Engineering,TheUniversityofReading,ReadingRG66AW,UnitedKingdomReceived19Ma
2、y2005;receivedinrevisedform14October2005;accepted5November2005AbstractExperimentalwindtunnelandsmokevisualisationtestingandCFDmodellingwereconductedtoinvestigatetheeffectofair?owcontrolmechanismandheatsourceinsideroomsonwindcatchers/towersperformance.Forthispurpose,afull-scalewindcatcherwas
3、connectedtoatestroomandpositionedcentrallyinanopenboundarywindtunnel.Pressurecoef?cients(Cp’s)aroundthewindcatcherandair?owintothetestroomwereestablished.Theperformanceofthewindcatcherdependsgreatlyonthewindspeedanddirection.Theincorporationofdampersandeggcrategrilleatceilinglevelreducesand
4、regulatestheair?owratewithanaveragepressurelosscoef?cientof0.01.Theoperationofthewindcatcherinthepresenceofheatsourceswillpotentiallylowertheinternaltemperaturesinlinewiththeexternaltemperatures.#2005ElsevierB.V.Allrightsreserved.Keywords:Windcatcher;Ventilation;Visualisationtesting1.Introd
5、uctionoftakingairsuppliedatrooflevel,whichisoftencleanerthanairsuppliedatgroundlevel,particularlywherethebuildingisWindcatchers/towerssystemswereemployedinbuildingsadjacenttoaroadinurbanareas.ThewindcatchersystemsintheMiddleEastformanycenturiesandtheyareknownbycomeinvariouscon?gurationstosu
6、itvariousbuildingtypeanddifferentnamesindifferentpartsoftheregion[1–3].Theywererequirementssuchastheincorporationofsolarpanel(solarconstructed,traditionally,fromwood-reinforcedmasonrywithchimney)andlightpipestobooststackeffect[12,13].Recently,openingsatheightabovethebuildingroofrangingfrom2
7、tothewindcatchersystemsareincreasinglybeinginstalledin20m.WithtallertowerscapturingwindsathigherspeedsandbuildingsaroundtheUK.Inmostofthesemoderninstallations,withlessdust[1,4,5].Theirapplicationinthehotaridregionofthewindcatchersterminateattheceilinglev
