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Class B Fire-Extinguishing Performance Evaluation of a Compressed Air Foam System at Different Air-to-Aqueous Foam Solution Mixing Ratios
被引:20
|作者:
Rie, Dong-Ho
[1
]
Lee, Jang-Won
[2
]
Kim, Seonwoong
[3
]
机构:
[1] Incheon Natl Univ, Fire Disaster Protect Res Ctr, Inchon 22012, South Korea
[2] Incheon Natl Univ, Dept Safety Engn, Inchon 22012, South Korea
[3] Youngsan Univ, Dept Architecture & Plant Engn, 288 Junam Ro, Yangsan Si 50510, Kyungsangnam Do, South Korea
来源:
APPLIED SCIENCES-BASEL
|
2016年
/
6卷
/
07期
关键词:
compressed air foam system;
experiment;
fire model;
air-to-aqueous foam solution;
mixing ratio;
fire-extinguishing performance evaluation;
D O I:
10.3390/app6070191
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
The purpose of this research is to evaluate the fire-extinguishing performance of a compressed air foam system at different mixing ratios of pressurized air. In this system, compressed air is injected into an aqueous solution of foam and then discharged. The experimental device uses an exclusive fire-extinguishing technology with compressed air foam that is produced based on the Canada National Laboratory and UL (Underwriters Laboratories) 162 standards, with a 20-unit oil fire model (Class B) applied as the fire extinguisher. Compressed air is injected through the air mixture, and results with different air-to-aqueous solution foam ratios of 1:4, 1:7, and 1:10 are studied. In addition, comparison experiments between synthetic surfactant foam and a foam type which forms an aqueous film are carried out at an air-to-aqueous solution foam ratio of 1:4. From the experimental results, at identical discharging flows, it was found that the fire-extinguishing effect of the aqueous film-forming foam is greatest at an air-to-aqueous solution foam ratio of 1:7 and weakest at 1:10. Moreover, the fire-extinguishing effect of the aqueous film-forming foam in the comparison experiments between the aqueous film-forming foam and the synthetic surfactant foam is greatest.
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页数:12
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