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 Title: Halon Options Technical Working Conference
Pub Type: Conferences
counterflow diffusion flames, fire suppression, flame inhibition, halon replacement, NaH(CO)3, sodium bicarbonate, water mist