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Experimental and Mechanistic Investigation of Opposed-Flow Propane/Air Flames by Phosphorus-Containing Compounds.


pdf icon Experimental and Mechanistic Investigation of Opposed-Flow Propane/Air Flames by Phosphorus-Containing Compounds. (1302 K)
Wainner, R. T.; McNesby, K. L.; Daniel, R. G.; Miziolek, A. W.; Babushok, V. I.

Halon Options Technical Working Conference. Proceedings. HOTWC 2000. Sponsored by: University of New Mexico, Fire Suppression Systems Assoc., Fire and Safety Group, Great Lakes Chemical Corp., Halon Alternative Research Corp., Hughes Associates, Inc., Kidde Fenwal, Inc., Kidde International, Modular Protection, Inc., Next Generation Fire Suppression Technology Program, Sandia National Laboratories, Summit Environmental Corp., Inc. and 3M Specialty Materials. May 2-4, 2000, Albuquerque, NM, 141-153 pp, 2000.

Available from:

For more information contact: Center for Global Environmental Technologies, New Mexico Engineering Research Institute, University of New Mexico, 901 University Blvd., SE, Albuquerque, NM 87106-4339 USA.
Telephone: 505-272-7250,
Fax: 505-272-7203. WEB: http://nmeri.unm.edu/cget/confinfo.htm

Keywords:

halon alternatives; flame inhibition; diffusion flames; additives; numerical models; extinction; chemical inhibition; kinetics; halons

Abstract:

In this work, we report the results of experimental und computational studies on inhibition and extinction of opposed-flow propane (C3H8)-air flames by DMMP (C3H9O3P), as well as N2 and FM-200 (C3F7H) as reference inhibitors. For the dilute flame conditions used in this work (high Zst) inhibitor effectiveness was significantly enhanced compared to previous results with undiluted fuel. However, unlike the previous work, OH fluorescence signals, and thus concentrtions, did not decrease as the inhibitant concentration was increased, even near extinction. The cause for this mains to be determined. Modcling results for a 1-D opposed flow flame of the same conditions agree with the present results of steady OH levels, while having also predicted the decreasing levels for the previous work with undiluted fuel.