Strategic Study of CAE >> 2006, Volume 8, Issue 7
Investigation of Fire Enhancement in Pool Fire by Water Mist
Science & Technology Division of Fire Department, MPS, Beijing 100021, China
Next Previous
Abstract
In the process of water mist fire suppression the phenomenon of fire expansion may be found initially. Experiments and theoretic study show that evaporation of mist on the surface of fuel plays a crucial role in the fire expansion. In experiments of varied conditions, it is found that volatility of fuel and characteristics of water mist determine the degree of fire intensification. It is found that water in the bottom of tray will make fuel surface temperature and fire heat release rate descend. And with increase of water quantity, fire intensification will be weakened, extinguishing time also be shortened. So further research on change of fire heat release rate owing to water pouring is necessary to ensure the reliability of experiment data.
Keywords
water mist ; pool fire ; azeotropic ; overpressure ; heat release rate
References
[ 1 ] Mawhinney J R.Characteristics of water mist for firesuppression in enclosures[A].Proceedings of the HalonAlternatives Technical Working Conference[C].Albuquerque NM:New Mexico Engineering ResearchInstitute, 1993.279~289
[ 2 ] Mawhinney J R, Dlugogorski B Z.Kim A.K.A closerlook at the extinguishing properties of water mist[A].FireSafety Science-Proceedings of the Fourth InternationalSymposium[C].Ottawa Canada, 1994.47~60
[ 3 ] Jackson C.Boilover[J].Industrial Fire World, 15 (3) :2000.26~35
[ 4 ] Bannister W W, Euaphanasate N, Jahngen E, Whitten J.Polar effects in initiation of ignition, proceedings[A].Halon Options Working Conference[C].AlbuquerqueNM, 2001.58~69
[ 5 ] NFPA325, Fire Hazard Properties, Flammable Liquids, Gases&Volatile Solids[M].Boston MA:National FireProtection Association, 1994
[ 6 ] Lefebvre A H.Atomization and Sprays[M].New York:Taylor&Francis, 1989
[ 7 ] Yuan L M, Charles P Lazzara.The effect of ventilationand preburn time on water mist extinguishing of diesel fuelpool Fires[J].Journal of Fire Sciences, 2004, 22 (5) , 379~404
[ 8 ] Pepi J S.Performance evaluaton of a low pressure watermist system in a marine machinery space with opendoorway[A].Halon Options Technical WorkingConference[C].Albuquerque, NM, 1995.58~69