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Analysis of Hold Times for Gaseous Fire Suppression Agents in Total Flooding Applications

dc.contributor.advisorMowrer, Frederick Wen_US
dc.contributor.authorO'Rourke, Sean Thomasen_US
dc.date.accessioned2005-10-11T10:52:19Z
dc.date.available2005-10-11T10:52:19Z
dc.date.issued2005-08-12en_US
dc.identifier.urihttp://hdl.handle.net/1903/2996
dc.description.abstractMany of the clean agents currently used in total flooding fire suppression applications have vapor densities greater than ambient air. The denser agent-air mixture creates hydrostatic pressure differences causing flow of the mixture out of the enclosure as well as flow of ambient air in through leakage paths inherent in building construction. Hold time refers to the amount of time it takes for the concentration of the agent-air mixture to drop below a specified concentration at a designated height within the protected enclosure. In this study an experimental test enclosure was used to evaluate an analytical model of agent-air mixture leakage and to investigate the effects of different leakage areas on agent hold times. The analytical model, known as the descending interface model, demonstrated favorable agreement with experimental measurements for heights greater than one-half the height of the enclosure for the agent used in this investigation.en_US
dc.format.extent2572456 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoen_US
dc.titleAnalysis of Hold Times for Gaseous Fire Suppression Agents in Total Flooding Applicationsen_US
dc.typeThesisen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.contributor.departmentFire Protection Engineeringen_US
dc.subject.pqcontrolledEngineering, Generalen_US
dc.subject.pquncontrolledhold timeen_US
dc.subject.pquncontrolledclean agenten_US
dc.subject.pquncontrolledhalon alternativesen_US
dc.subject.pquncontrolledintegrity testen_US
dc.subject.pquncontrolledclean agenten_US
dc.subject.pquncontrolledsharp interface modelen_US


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