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Appl. Sci. 2016, 6(7), 191; doi:10.3390/app6070191

Class B Fire-Extinguishing Performance Evaluation of a Compressed Air Foam System at Different Air-to-Aqueous Foam Solution Mixing Ratios

1
Fire Disaster Protection Research Center, Incheon National University, Incheon 22012, Korea
2
Department of Safety Engineering, Incheon National University, Incheon 22012, Korea
3
Department of Architecture and Plant Engineering, Youngsan University, 288 Junam-ro, Yangsan-si, Kyungsangnam-do 50510, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Lennart Y. Ljungberg
Received: 23 March 2016 / Revised: 22 June 2016 / Accepted: 25 June 2016 / Published: 28 June 2016
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Abstract

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. View Full-Text
Keywords: compressed air foam system; experiment; fire model; air-to-aqueous foam solution; mixing ratio; fire-extinguishing performance evaluation compressed air foam system; experiment; fire model; air-to-aqueous foam solution; mixing ratio; fire-extinguishing performance evaluation
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Rie, D.-H.; Lee, J.-W.; Kim, S. Class B Fire-Extinguishing Performance Evaluation of a Compressed Air Foam System at Different Air-to-Aqueous Foam Solution Mixing Ratios. Appl. Sci. 2016, 6, 191.

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