Comparison of the Fire Suppression Effectiveness of Sodium Bicarbonate Particles and Fine-Water Droplets in Non-Premixed and Premixed Flames

Published

April 1, 2001

Author(s)

Harsha K. Chelliah, A K. Lazzarini, P N. Wanigarathne, Gregory T. Linteris

Abstract

Two laboratory-scale experimental configurations are used to investigate the fire suppression effectiveness of condensed phase agents, e.g., fine-water droplets (with and without chemical additives) and sodium bicarbonate dry powder. The two flame configurations considered are premixed and non-premixed flame, which encompass most real world fires (except for the turbulence effects). With appropriate scaling relationships that take into account the structural features of the two types of flames, the flame inhibition results with condensed-phase agents indicate a similar trend. The observed differences between the two types of flames can be attributed to flow field involved in the two flames. The major implication of these observed differences is that extension of laboratory-scale flame inhibition results with condensed-phase agents to real world applications must be pursued carefully.

Proceedings Title

Halon Options Technical Working Conference, 2001

Conference Dates

April 24-26, 2001

Conference Location

Undefined

Conference Title

Halon Options Technical Working Conference

Pub Type

Conferences

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Keywords

counterflow diffusion flames, fire suppression, flame inhibition, halon replacement, NaH(CO)3, sodium bicarbonate, water mist

Citation

Chelliah, H. , Lazzarini, A. , Wanigarathne, P. and Linteris, G. (2001), Comparison of the Fire Suppression Effectiveness of Sodium Bicarbonate Particles and Fine-Water Droplets in Non-Premixed and Premixed Flames, Halon Options Technical Working Conference, 2001, Undefined, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=861095 (Accessed October 9, 2025)