Binary CF{sub 3}Br- and CHF{sub 3}-inert flame suppressants: Effect of temperature on the flame inhibition effectiveness of CF{sub 3}Br and CHF{sub 3}
- National Research Inst. of Fire and Disaster, Tokyo (Japan)
- Univ. of Delaware, Newark, DE (United States). Dept. of Mechanical Engineering
A numerical investigation with detailed chemistry and transport was conducted on the inhibition effectiveness of binary halogenated suppressant and inert gas mixtures. Computational results demonstrate that while positive synergism persists between CF{sub 3}Br and inert gases, little or negative synergism exists between CHF{sub 3} and inert gases. These synergistic effects are attributed to the sensitivity of flame inhibition effectiveness of the chemical suppressant, in that while the inhibition effectiveness of CF{sub 3}Br is enhanced at lower flame temperatures, it remains relatively unchanged with CHF{sub 3} over the examined temperature range. The temperature sensitivity of CF{sub 3}Br inhibition effectiveness is a result of enhanced catalytic inhibition cycles as the flame temperature decreases. It is also demonstrated that water vapor tends to diminish the flame inhibition effectiveness of CHF{sub 3}.
- OSTI ID:
- 355738
- Journal Information:
- Combustion and Flame, Journal Name: Combustion and Flame Journal Issue: 3 Vol. 118; ISSN 0010-2180; ISSN CBFMAO
- Country of Publication:
- United States
- Language:
- English
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