DepartmentofTHEHONGKONGBuildingEnvironmentandEnergy EngineeringPOLYTECHNICUNIVERSITY建築環境及能源工程學系香港理工大Lecture 7: Compartment FireXinyan Huang,PhD,CEngAssistantProfessorDept.ofBuildingEnvironmentandEnergyEngineeringResearchCentreforFireSafetyEngineering,Polyuxy.huang@polyu.edu.hkFireScience1DrXinyanHuang
Fire Science 1 Dr Xinyan Huang Lecture 7: Compartment Fire Xinyan Huang, PhD, CEng Assistant Professor Dept. of Building Environment and Energy Engineering Research Centre for Fire Safety Engineering, PolyU xy.huang@polyu.edu.hk
Compartment(Enclosure)FirePhenomenaCompartment fire: fire is confined within a room or similar enclosure within a building(themostcommontypeofresidencefire)Shepherds BushCourtFire(2016)FacadefireCompartmentfireGrenfell TowerFire (2017)2FireScienceDrXinyan Huang
Fire Science 2 Dr Xinyan Huang Compartment (Enclosure) Fire Phenomena Shepherds Bush Court Fire (2016) Compartment fire: fire is confined within a room or similar enclosure within a building (the most common type of residence fire) Grenfell Tower Fire (2017) Compartment fire Facade fire
Compartment(Enclosure)Fire PhenomenaIsbusfirelikecompartmentDaegusubwayfire(2003)fire orpool fire?Roma bus fire(2018)HKbusfireunderbridge(2019)3FireScienceDrXinyan Huang
Fire Science 3 Dr Xinyan Huang Compartment (Enclosure) Fire Phenomena Daegu subway fire (2003) Roma bus fire (2018) HK bus fire under bridge (2019) Is bus fire like compartment fire or pool fire?
FlashoverandBackdraftFlashoverin1minSlowmotionofbackdraftFireScience4DrXinyanHuang
Fire Science 4 Dr Xinyan Huang Flashover and Backdraft Flashover in 1 min Slow motion of backdraft
CompartmentFirevs.CompartmentationCompartmentfiresinaircraft,ships,ground,andbuildingsaremostFireinopenspacesevereduetoenhancedheattransferandaccumulatetoxicsmoketemperatureCompartmentationisalsothebestwaytocontrolthefireutdoorstime (minutes)Fire inenclosedspacecmperatuPrincipleofbuildingfiresafetydesignSmallroom/floor:compartmentationtoinsolatefireandsmoketime (minutes)indoorLargeopenspace:ventthesmokeout5FireScienceDrXinyanHuang
Fire Science 5 Dr Xinyan Huang Compartment Fire vs. Compartmentation ❖ Compartment fires in aircraft, ships, ground, and buildings are most severe due to enhanced heat transfer and accumulate toxic smoke ❖ Compartmentation is also the best way to control the fire Fire in open space Fire in enclosed space Principle of building fire safety design • Small room/floor: compartmentation to insolate fire and smoke • Large open space: vent the smoke out