Spray Characteristics Determination of Water Mist for Suppressing Pool Fire

2007 ◽  
Author(s):  
Li G. Zheng ◽  
Ming G. Yu ◽  
Shui J. Yu ◽  
Zhi C. Liu
Keyword(s):  
Water Mist ◽  
Pool Fire ◽  
Spray Characteristics

EXPERIMENTAL STUDY ON EXTINGUISHING POOL FIRE SHELTERED BY BARRIER WITH WATER MIST

2004 ◽  
Vol 12 (3) ◽  
pp. 209-222
Author(s):  
LIU JIANGHONG ◽  
FANG YUDONG ◽  
LIAO GUANGXUAN ◽  
LIN LIN
Keyword(s):  
Experimental Study ◽  
Water Mist ◽  
Pool Fire

scholarly journals Effects of Discharge Area and Atomizing Gas Type in Full Cone Twin-Fluid Atomizer on Extinguishing Performance of Heptane Pool Fire under Two Heat Release Rate Conditions in an Enclosed Chamber

2021 ◽  
Vol 11 (7) ◽  
pp. 3247
Author(s):  
Dong Hwan Kim ◽  
Chi Young Lee ◽  
Chang Bo Oh
Keyword(s):  
Heat Release ◽  
Flow Rate ◽  
Heat Release Rate ◽  
Release Rate ◽  
Water Mist ◽  
Pool Fire ◽  
Sauter Mean Diameter ◽  
Discharge Area ◽  
Fire Extinguishing ◽  
Enclosed Chamber

In this study, the effects of discharge area and atomizing gas type in a twin-fluid atomizer on heptane pool fire-extinguishing performance were investigated under the heat release rate conditions of 1.17 and 5.23 kW in an enclosed chamber. Large and small full cone twin-fluid atomizers were prepared. Nitrogen and air were used as atomizing gases. With respect to the droplet size of water mist, as the water and air flow rates decreased and increased, respectively, the Sauter mean diameter (SMD) of the water mist decreased. The SMD of large and small atomizers were in the range of approximately 12–60 and 12–49 μm, respectively. With respect to the discharge area effect, the small atomizer exhibited a shorter extinguishing time, lower peak surface temperature, and higher minimum oxygen concentration than the large atomizer. Furthermore, it was observed that the effect of the discharge area on fire-extinguishing performance is dominant under certain flow rate conditions. With respect to the atomizing gas type effect, nitrogen and air appeared to exhibit nearly similar extinguishing times, peak surface temperatures, and minimum oxygen concentrations under most flow rate conditions. Based on the present and previous studies, it was revealed that the effect of atomizing gas type on fire-extinguishing performance is dependent on the relative positions of the discharged flow and fire source.

scholarly journals Study on Flame Expansion Phenomenon in Pool Fire Extinguished by Water Mist

2011 ◽  
Vol 11 ◽  
pp. 550-559 ◽  
Author(s):  
Xiao Xk ◽  
Kuang Kq ◽  
Liang Ts ◽  
Tang Hd ◽  
Liao Gx ◽  
...  
Keyword(s):  
Water Mist ◽  
Pool Fire

Heat release rate determination of pool fire at different pressure conditions

2018 ◽  
Vol 42 (6) ◽  
pp. 620-626 ◽  
Author(s):  
Qiuju Ma ◽  
Jiachen Chen ◽  
Hui Zhang
Keyword(s):  
Heat Release ◽  
Heat Release Rate ◽  
Release Rate ◽  
Pool Fire

scholarly journals Comprehensive Assimilation of Fire Suppression Modeling and Simulation of Radiant Fire by Water and Its Synergistic Effects with Carbon Dioxide

Energies ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 5850
Author(s):  
Hassan Raza Shah ◽  
Kun Wang ◽  
Xu Qing Lang ◽  
Jing Wu Wang ◽  
Jing Jun Wang ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Synergistic Effects ◽  
Fire Suppression ◽  
Water Mist ◽  
Pool Fire ◽  
Water Suppression ◽  
Water Droplets ◽  
Film Forming ◽  
The Difference ◽  
Suppression Effects

Recently, water has been employed as a supportive agent for the preparation of multiple suppressing agents including aqueous film forming foams (AFFF), which is combined with different kinds of gases for its various applications. In this study, the water mist is chosen for the gas-suppressing agent such as carbon dioxide. Our work investigated the suppression effects of water droplets on the n-heptane pool fire, and its mixture with carbon dioxide, respectively. The size and frequency of droplets with their effect on temperature and suppression was compared to observe the difference in the suppression. Initially, it was found that the droplets having a larger droplet size were found to be more efficient as compared to the smaller droplets with respect to the heat release rate, temperature, and radiation. Afterwards, a mixture of water droplets and carbon dioxide was simultaneously discharged to compare the difference between these two suppressing agents. It was found that the synergistic effect of the mixture has higher advantages over the use of only water suppression. It helps reduce the hot gases that surround the pool fire and allows the water mist to travel efficiently towards the fuel. Both suppression mechanisms were set to similar initial parameters that lead to different outcomes.

Thermal Environments Induced by a Pool Fire with and without Discharging Water Mist

2009 ◽  
Vol 52 (3) ◽  
pp. 176-182
Author(s):  
Y. Gao ◽  
P. Liu ◽  
S. S. Li ◽  
W. K. Chow
Keyword(s):  
Water Mist ◽  
Pool Fire ◽  
Thermal Environments
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