Title of article
Analysisoflarge-scaletestsforAP-600passivecontainmentcoolingsystemOriginalResearchArticle
Author/Authors
W.T.Sha، نويسنده , , T.H.Chien، نويسنده , , J.G.Sun، نويسنده , , B.T.Chao، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2004
Pages
20
From page
197
To page
216
Abstract
Allnext-generationlightwaterreactorsutilizepassivesystemstoremoveheatvianaturalcirculationandaresignificantlydifferentfrompastandcurrentnuclearplantdesigns.OneuniquefeatureoftheAP-600isitspassivecontainmentcoolingsystem(PCCS),whichisdesignedtomaintaincontainmentpressurebelowthedesignlimitfor72hwithoutactionbythereactoroperator.Duringadesign-basisaccident(DBA),i.e.,eitheraloss-of-coolantoramain-steam-linebreakaccident,steamescapesandcomesincontactwiththemuchcoolercontainmentvesselwall.Heatistransferredtotheinsidesurfaceofthesteelcontainmentwallbyconvectionandcondensationofsteamandthroughthecontainmentsteelwallbyconduction.Heatisthentransferredfromtheoutsideofthecontainmentsurfacebyheatingandevaporationofathinliquidfilmthatisformedbyapplyingwateratthetopofthecontainmentvesseldome.Airintheannularspaceisheatedbybothconvectionandinjectionofsteamfromtheevaporatingliquidfilm.Theheatedairandvaporriseasaresultofnaturalcirculationandexittheshieldbuildingthroughtheoutletsabovethecontainmentshell.AlloftheanalyticalmodelsthataredevelopedforandusedintheCOMMIX-1DcodeforpredictingperformanceofthePCCSwillbedescribed.Thesemodelscovergoverningconservationequationsformulticomponentssingle-phaseflow,transportequationsforthek−ɛtwo-equationturbulencemodel,auxiliaryequations,liquid-filmtrackingmodelforbothinside(condensate)andoutside(evaporatingliquidfilm)surfacesofthecontainmentvesselwall,thermalcouplingbetweenflowdomainsinsideandoutsidethecontainmentvessel,andheatandmasstransfermodels.VariouskeyparametersoftheCOMMIX-1DresultsandcorrespondingAP-600PCCSexperimentaldataarecomparedandtheagreementisgood.Significantfindingsfromthisstudyaresummarized.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2004
Journal title
Nuclear Engineering and Design Eslah
Record number
894790
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