Fire suppression performance of water mist under ventilation and cycling discharge conditions

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Conference2nd International Water Mist Conference 2002: 10 April 2002, Amsterdam, Netherlands
Pages6176; # of pages: 16
SubjectWater mist
AbstractWhen gaseous agents are used to extinguish fires, ventilation systems in the compartment must be shut down, otherwise the fire protection system can be expected to fail. Recent research [1] showed that water mist fire suppression systems were able to extinguish fires effectively with a definable degree of ventilation, such as with open doors or vents in a compartment, while gaseous agents could not work effectively under such ventilation conditions. In order to systematically investigate the fire suppression performance of water mist systems under ventilation conditions, a series of full-scale fire tests were carried out by the National Research Council of Canada [2]. The fire scenarios used in the tests included small and large pool fires, spray fires and wood crib fires. These fires were placed in different locations within the compartment and some fires were shielded from the direct hit of water mist. The ventilation conditions in the compartment included non-ventilation (door closed), natural ventilation (door opened) and forced ventilation (door opened and an exhaust fan running). Two types of water mist systems (single-fluid and twin-fluid) were used in the tests. Also, the use of cycling discharge mode for the improvement of extinguishing performance of water mist system for ventilated fires was studied [3]. This paper presents the extinguishing performance of two water mist systems under natural and forced ventilation, and the improvement of fire suppression performance by using cycling discharge mode.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number45383
NPARC number20379004
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Record identifier1bfaf9ee-7cd8-46be-9971-a65546d6ee0b
Record created2012-07-24
Record modified2016-05-09
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