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dc.contributor.authorHu, Xiaoqin
dc.contributor.authorKraaijeveld, Arjen
dc.contributor.authorLog, Torgrim
dc.date.accessioned2020-07-01T11:53:23Z
dc.date.available2020-07-01T11:53:23Z
dc.date.issued2020-05-16
dc.description.abstractInert gas agents have the potential to be widely used in fire suppression systems due to health and safety concerns associated with active chemicals. To suppress fire while minimizing hypoxic effects in an occupied area, the discharge quantity of inert gas agents should be carefully designed to dilute the oxygen concentration to a specific threshold level. In this study, the general expressions between oxygen concentration, the discharge rate of inert gas agents, and the ventilation rate of the air-agent mixture are derived first. Then, explicit formulas to calculate the discharge/ventilation rate and the required quantity of inert gas agents are given if the discharge rate and ventilation rate both are constants. To investigate the dilution and fire extinguishing efficiencies of inert gas agents, two scenarios with a discharge of inert gas agents into an enclosure are modeled using the Fire Dynamic Simulator (FDS). The simulation results show that the average oxygen mass fraction approximately reaches the design level at the end of the discharge period. Variation in oxygen concentration along the enclosure height is analyzed. For the scenario with a fire source, oxygen mass fraction decreases fast as oxygen is consumed by the combustion process. Thus, the fire is extinguished a little earlier than the end of the discharge period.en_US
dc.identifier.citationHu X, Kraaijeveld A, Log T. Numerical Investigation of the Required Quantity of Inert Gas Agents in Fire Suppression Systems. Energies. 2020;13en_US
dc.identifier.cristinIDFRIDAID 1817394
dc.identifier.doi10.3390/en13102536
dc.identifier.issn1996-1073
dc.identifier.urihttps://hdl.handle.net/10037/18739
dc.language.isoengen_US
dc.publisherMDPIen_US
dc.relation.journalEnergies
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2020 The Author(s)en_US
dc.titleNumerical Investigation of the Required Quantity of Inert Gas Agents in Fire Suppression Systemsen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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