Experimental Study on Wood Crib Fire Suppression of Water Mist with Additives

2013 ◽  
Author(s):  
Cui Yongyi ◽  
Qu Fang ◽  
Fanlin Cui ◽  
Zhang Jun
Keyword(s):  
Experimental Study ◽  
Fire Suppression ◽  
Water Mist ◽  
Wood Crib

The Experimental Study on the Fire Suppression Effectiveness of Water Mist with the FeCl2 Additives

2013 ◽  
Vol 790 ◽  
pp. 53-56
Author(s):  
Chen Jian ◽  
Xu Yan Ying ◽  
Wang Na
Keyword(s):  
Experimental Study ◽  
Fire Suppression ◽  
Water Mist ◽  
Experimental Results ◽  
Additive Concentration ◽  
Experimental Conditions ◽  
Fire Source ◽  
Fire Extinguishing ◽  
Nozzle Position

This paper presents an experimental study of fire suppression effectiveness with water mist containing FeCl2 additives.The investigation focuses on suppression effectiveness under various FeCl2 additives concentrations,working pressures and nozzle different height above the fire source . The experimental results show that: there is a significant impact on fire suppression effectiveness when adding FeCl2 to water mist. There is an optimum additive concentration of extinguishing fire, corresponding to the shortest extinguishing time, the least amount of water, the highest efficiency of extinguishing fire. The nozzle working pressures and nozzle position have effect on the performance of the water mist extinguishing: the greater the pressure is, the shorter water mist fire extinguishing time is. Under the same experimental conditions, the closer the water mist nozzles are to the oil pan, the shorter extinguishing time is.

Full-scale experimental study on fire suppression performance of a designed water mist system for rescue station of long railway tunnel

2012 ◽  
Vol 30 (2) ◽  
pp. 138-157 ◽  
Author(s):  
Na Meng ◽  
Longhua Hu ◽  
Shuai Liu ◽  
Long Wu ◽  
Longfei Chen ◽  
...  
Keyword(s):  
Experimental Study ◽  
Fire Suppression ◽  
Water Mist ◽  
Full Scale ◽  
Railway Tunnel

The Experimental Study on Extinguishing Cooking Oil Fires by Water Mist

2012 ◽  
Vol 166-169 ◽  
pp. 2804-2809 ◽  
Author(s):  
Jian Chen
Keyword(s):  
Experimental Study ◽  
Fire Suppression ◽  
Engineering Application ◽  
Water Mist ◽  
Flow Coefficient ◽  
Spray Distance ◽  
Working Pressure ◽  
Fire Extinguishment ◽  
Cooking Oil ◽  
Practical Engineering

Abstract. The effects of flow coefficients, working pressures and different spray distances on extinguishing cooking oil fires by water mist were studied by experiment. The results show that the fire suppression effectiveness is increased with the increase of flow coefficient and working pressure, spray distance also affects the fire extinguishment efficiency of water mist. Reasonable conditions and designing parameters for practical engineering application of water mist are suggested.

scholarly journals Experimental and Numerical Study of Water Mist Fire Suppression System Effectiveness on Shielded Fire

2018 ◽  
Vol 67 ◽  
pp. 04039
Author(s):  
Kuswantoro ◽  
Y.S. Nugroho
Keyword(s):  
Numerical Study ◽  
Fire Suppression ◽  
Water Flow Rate ◽  
Water Mist ◽  
Spray Nozzle ◽  
Wood Crib ◽  
Fine Spray ◽  
System Effectiveness ◽  
Suppression System ◽  
Fuel Source

This study aims to investigate the effectiveness of water mist on suppressing a shielded fire. Full-scale experiments are carried out in a partition room of (lxwxh) 2x2x2.5 m size. Five water mist nozzle which consist of two type nozzle was used, high flow (fogjet) nozzle installed at top center of the room and fine spray nozzle installed at each side of room at high 1.5 m from ground. The pressure of water mist system was maintained at 20 bar which correspond to 2.6 lpm of water flow rate. Wood crib of 6.5 x 6.5 x 6 cm size was used as the fuel source. The obstruction used as a fuel shield has table like form with 40 x 40 cm cover area and 0.5 m height. The location of fuel source and fuel shield was varied (1) fuel source and shield at centre of room, (2) fuel source at one side of shield and the shield at centre of room, (3) fuel source and shield at corner of room, and (4)) fuel source at one side of shield and the shield at corner of room. Numerical simulation using FDS 6.5.3 was also performed to validate the use of FDS and get better understanding of the phenomena. The results showed that water mist was able to extinguish the fire around 20 s, 16 s, 30 s, and 24 s for scenario 1, 2, 3 and 4 respectively. It is also observe that the mist distribution around the shield and cover area of the shield play a role on the capacity and time needed of water mist to extinguish the fire.

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