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Stirred – Reactor Calculations to Understand Unwanted Combustion Enhancement by Potential Halon Replacements

Published

Author(s)

Gregory T. Linteris, Viswanath R. Katta, Fumiaki Takahashi, Harsha K. Chelliah, Oliver Meier

Abstract

Several fire suppressants are under consideration to replace CF3Br for use in suppressing fires in aircraft cargo bays. In an FAA performance test simulating the explosion of an aerosol can, however, the replacements, when added at sub-inerting concentrations, have all been found to create higher pressure rise than with no added agents, hence failing the test. Thermodynamic equilibrium calculations as well as perfectly-stirred reactor simulations, with detailed reaction kinetics, are performed to understand the reasons for the unexpected enhanced combustion rather than suppression. The effectiveness of the suppressant is found to be highly dependent upon the mixing conditions of the reactants (through the local stoichiometry) for CF3Br, but not for C2HF5.
Citation
Combustion and Flame
Volume
159

Keywords

Fire Suppression, Flame Inhibition, CF3Br, HFC-125, Halon Replacements, Cargo-Bay Fire Suppression

Citation

Linteris, G. , Katta, V. , Takahashi, F. , Chelliah, H. and Meier, O. (2011), Stirred – Reactor Calculations to Understand Unwanted Combustion Enhancement by Potential Halon Replacements, Combustion and Flame, [online], https://doi.org/10.1016/j.combustflame.2011.09.011 (Accessed April 15, 2024)
Created November 7, 2011, Updated November 10, 2018