Strategic Study of CAE >> 2012, Volume 14, Issue 11
Research of the effect of the component proportion in the new water mist additive to extinguishing performance
1. State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, China;
2. College of Safety Seience and Engineering, Civil Aviation University of China, Tianjin 300300, China
Next Previous
Abstract
Water mist technology provides efficient firefighting performance while there is still room for improvement, so varieties of additives have been studied recent years both abroad and domestic. The self-made additives are used to compare the firefighting performance of diesel and heptane fire in open space. By adjusting the concentration of substance in the additives and conducting the experiment under the pressure of 0.3 MPa, 0.5 MPa and 0.7 MPa, extinguishing time, flame shape and temperature are measured in the experiment. Through the experiments using different fuels, it can be found when the fuel is heptane who has a lower ignition point and a higher evaporation, the water mist additives can still significantly improve the firefighting performance. According to the data based on different concentrations of fluorinated surfactants, we can see fluorinated surfactants are the main substance to prove the performances by changing physical property of water mist. Maximize fire performance proportion of the additives are find by experiments results.
Keywords
water mist additive ; fire fighting performance ; additive proportion ; fire extinguishing mechanism
References
[ 1 ] Daniel Madzykowski. Water additives for incre ased efficiency of fire protection and suppression[C]//Fire Eextinguishment and Fire Safety Engineering.Japan:Tokyo,1998
[ 2 ] Andrew K Kim.The Effect of Foam Additives on the Fire Suppres-sion Efficiency of Water Mist[M].Ottawa:Institute for Researeh in Constnuction.National Researeh Council,1994.
[ 3 ] 丛北华,毛 涛,廖光煊.含NaCI添加剂细水雾对不同燃料池火灭火性能的实验研究[J].热科学与技术,2004(3):65-70. link1
[ 4 ] Georges LeFort.Forafac WM:Additive for water mist syste ms on class B fires[R].Washington:University of Maryland,2005.
[ 5 ] 赵乘寿,宫 聪,汪 鹏,等,含磷酸二氢铵细水雾灭火有效性研究[J].消防科学与技术,2011,9(30):822-824. link1
[ 6 ] 廖光焰,丛北华,况凯赛,铁基添加剂增强细水雾灭火性能的实验研究[J].工程热物理报,2005(26):273-276. link1
[ 7 ] 况凯赛,丛北华,廖光焰,含FeCl2添加剂细水雾灭火有效性的实验研究[J].火科学,2005,14(1):21-28.
[ 8 ] 从北华,周晓猛,廖光焰,复合型添加剂增强细水雾灭火性能研究[J.中科技术大学学报,2006,1(36):20-25. link1
[ 9 ] 刘江虹,金 翔,廖光煊,新型细水雾添加剂的制备及其灭火性能评价[J].中国工程科学,2010,9(12);58-62,68. link1
[10] 郑 忠,胡纪化,表面活性剂的物理化学原理[M].广州:华南理工大学出版社,1995.