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Burning Rate of Premixed Methane-Air Flames Inhibited by Fluorinated Hydrocarbons. [Abstract Only] (NISTIR 5499)



Gregory T. Linteris, L Truett


The agents which are currently being considered as replacements for fire suppressant agent CF3Br are mostly fluorinated hydrocarbons and perfluorinated alkanes. This abstract describes measurements of the reduction in burning rate of premixed methane-air flames with the addition of the single carbon inhibitors CF4, CF3H, CF2H2, and CF3I. Early studies of the inhibitory effects of halogenated hydrocarbons on flames were conducted in premixed systems. The premixed laminar burning rate is a fundamental parameter describing the overall reaction rate, heat release, and heat and mass transport in a flame. In addition, the reduction in the premixed flame burning rate is useful for understanding the mechanism of chemical inhibition of fires since diffusion flames often have a stabilization region which is premixed, and good correlation has been found between the reduction in burning rate and the concentration of inhibitors found to extinguish diffusion flames. Premixed flame burners have flow fields which are relatively easily characterized, making interpretation of the inhibitor's effect on the overall reaction rate straightforward.
NIST Interagency/Internal Report (NISTIR) - 5499
Report Number


fire research, hydrocarbons, burning rate, premixed flames, methane


Linteris, G. and Truett, L. (1994), Burning Rate of Premixed Methane-Air Flames Inhibited by Fluorinated Hydrocarbons. [Abstract Only] (NISTIR 5499), NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD, [online], (Accessed April 24, 2024)
Created September 1, 1994, Updated November 10, 2018