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《ASHRAE.Application-1999.43 BUILDING AIR INTAKE AND EXHAUST DESIGN》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。
1、CHAPTER43BUILDINGAIRINTAKEANDEXHAUSTDESIGNExhaustStackandAirIntakeDesignStrategies..........................................................................43.1StackHeighttoAvoidReentrainment.........................................................................
2、.................43.3ExhaustDilutionCalculations.....................................................................................................43.6ABUILDINGoutsideairintakebringsfreshairintoabuilding.exhaustplumerise.ThisaddedairvolumedoesnotneedheatingorLik
3、ewise,buildingexhaustsremoveaircontaminantsfromacooling,savingonenergycosts.buildingtotheoutdoorssothatthewindcandilutetheemissions.IfInsomecases,separateexhaustsystemsaremandatory.Thetheintakeorexhaustsystemisnotwelldesigned,contaminantsnatureofthecontaminantstob
4、ecombined,recommendedindustrialfromnearbyoutdoorsources,suchasvehicleexhaust,orcontami-hygienepractice,andapplicablesafetycodesneedtobeconsidered.nantsemittedfromthebuildingitself,suchaslaboratoryfumehoodSeparateexhauststacksshouldbegroupedinatightclustertotakeexh
5、aust,canenterthebuildingwithinsufficientdilution,causingadvantageofthelargerplumeriseoftheresultingcombinedjet.Inodors,healthimpacts,andreducedindoorairquality.Thischapteraddition,asinglestacklocationforacentralexhaustsystemoradiscussestheproperdesignofexhauststac
6、ksandplacementofairtightclusterofstacksallowsbuildingairintakestobepositionedasintakestoavoidairqualityimpacts.Acompanionchapter,Chapterfaraspossiblefromtheexhaustlocation.Foratightclustertobe15ofthe1997ASHRAEHandbook—Fundamentals,morefullyconsideredasasinglestack
7、indilutioncalculations,thestacksmustdescribeswindandairflowpatternsaroundbuildings.Relatedinfor-beuncapped,haveapproximatelythesameexhaustvelocities,andmationcanalsobefoundinChapters7,13,28,29,and30ofthisallliewithinatwo-stackdiameterradiusofthemiddleofthegroup.vo
8、lume,Chapters12and13ofthe1997ASHRAEHandbook—Stackslinedupinarowdonotactasasinglestack,asshownbyFundamentals,andChapters24,25,and30ofthe2000ASHRAEGregori
