七氟丙烷机房气体灭火系统设计.doc

七氟丙烷机房气体灭火系统设计.DOC七***丙烷机房气体灭火系统设计fireextinguishingagentThechemicalmolecularformulaCF3CHFCF3HFC227eaheptafluoropropane,itsqualityshouldmeetthecorrespondingsafetytechnicalindicators・hedelineationofprotectedareasshallmeetthefollowingrequirements・theprotectionareashouldbedividedintofixedsingleenclosedspace;whentheceilingandfloorofthesamesectionneedtobeprotectedatthesametime,,areaisaprotectedareamorethan800squaremeters;thevolumeshouldnotbegreaterthan3600m3・whenusingprefabricatedfireextinguishingdevice,areaisaprotectionareamorethan500squaremeters;-10degreescentigrade・thefireresistanceoftheenclosure,;・・fireprotectionzoneshouldbemaintainedintheclosedcondition,inadditiontoopeningpressurereliefopeningoutside,aswellasforfireprotectionzoneofthevalveoftheventilatorandventilationpipe,,shouldbelocatedintheprotectedareaheightabove2/3・Thepressurereleaseareaiscalculatedbypressing:*Q/()Fx orificearea(MZ);Q117Theaveragedischargerateinfluorinepropaneprotectionzone(kg/s);Pftheallowablepressure(Pa)oftheretainingstructuretowithstandinternalpressure・Whentheprotectiveareaofanelasticdoorcloseroraspringdoorisprovidedwithanouterdoor,theopeningareaoftheutilitymodelisnotlessthanthecalculationareaofthepressurereleaseport,(two)・DesignConcentrationThefiredesignshouldadopt8%-227ea,,fireprotectionareashouldbetheresidualamount