地下汽車庫機械排煙及細(xì)水霧滅火的研究.pdf

1、沈陽建筑大學(xué)碩士學(xué)位論文地下汽車庫機械排煙及細(xì)水霧滅火的研究姓名：宮宇奇申請學(xué)位級別：碩士專業(yè)：供熱、供燃?xì)?、通風(fēng)及空調(diào)工程指導(dǎo)教師：張培紅201103碩士研究生學(xué)位論文AbstractIIIAbstractFireintheUndergroundgarageisnotedfheavysmokinghightemperaturefirepocapacityofexplosionreleasepersonnelevacuationextr

2、emelydifficult.Incaseoffireitcanbringaboutmeseriousconsequencesthantheabovegroundstructures.ThestudyofthemechanicalsmokeextractionfireextinguishersystemvaliditycanprovidethetechnicalsupptfestablishingthePFPD’scriterionsi

3、mplementingthekeytechnologyofthefiresafetyintheundergroundgarage.FDSisusedtosimulateanalysetheConstantAirVolume(CAV)exhaustsystemonanundergroundgarage.Basedonthecontrastofthefollowingparametersinfirescenariosuchasthechan

4、gesoftheheatreleaseratetheaveragetemperatureconcentrationsofcarbondioxideontheZ=1.8mplaneofcentralcridintheconditionofthedifferentmechanicalexhaustanalysedthesystemexhaustsmokelevelthatcouldreachtoanoptimumcontrolresult.

5、TheresultsshowthatCAVexhaustsystemcannotcontrolthedevelopmentoffiresuccessfullythesmokepervasionatthesametime.TheauthanalysedthemechanicalsmokeextractionsystemoptimizingbyUsheredinthethoughtofVariableAirVolume(VAV).Thisa

6、rticlesetupaVAVexhaustsystemmodel.Thensimulatedanalysedthechangesoftheheatreleaseratetheaveragetemperaturethechangesofthesmokelayerintheconditionofchangingthesystemexhaustsmokelevelatdifferenttime.BasedonthecontrastofVAV

7、exhaustsystemCAVexhaustsystemanalysedtheprogramofVAVexhaustsystemthatcouldreachtoanoptimumresult.TheresultsshowthatVAVexhaustsystemcanbothimprovecontroleffectsofthesmokecontrolthedevelopmentoffiresuccessfully.Thisarticle

8、setupawatermistfiresuppressingsystemmodelbythe“tetraqonum”layouttypesthe“rhombus”layouttypesofsprayerindependently.Contrasttheeffectonfireofthedifferentlayouttypesflowintheeventwhetherfirewaskeptout.Analysedtheprogramofw

9、atermistfiresuppressingsystemthatcouldreachtoanoptimumresult.Theresultsshowthatthe“rhombus”layouttypesofsprayercanreachtheoptimaleffectonfire.Setupthecouplingmodelofthemechanicalsmokeextractionsystemthewatermistfiresuppr

10、essingsystem.Theresultsshowthatthedynamicsmokeextractioncangreatlymitigatetheadverseimpactofthesmokelayerwiththewatermistfiresuppressingsystem.Whenfireclosetothesmokeventthenegativeeffectonfirewasenlargementedbythedynami