https://www.nist.gov/system/files/documents/el/fire_research/R0501578.pdf
THE MECHANISM OF FIRE SUPPRESSION
BY CONDENSED AEROSOLS
Vladimir V. Agafonov, Sergey N. Kopylov,
Andrey V. Sychev, Vassily A. Uglov, Dmitry B. Zhyganov
All-Russian Scientific Research Institute for Fire Protection
VNIIPO 12, Balashikha District, Moscow Region, 143903 Russia
Tel: +7-095-5219747; Fax: +7-095-5214394
e-mail: firetest@mail.ru
INTRODUCTION
Condensed fire extinguishing aerosol represents a mixture of fine dispersed solid particles
and inert gases. The aerosol can be produced by combustion of some solid fuels (aerosol-
forming compounds) in special generator. Despite differences in these fuels, they contain as a
rule inorganic oxidisers and salts (KNO3, KClO4, KCl) and organic or inorganic combustibles
(Mg, epoxycombinations) [1]. A gaseous phase of the aerosol consists mainly from N2 and
CO2, and a solid phase contains K2CO3, KHCO3, KCl [2].
In the scientific literature there are many experimental data concerning fire extinguishing
density for aerosols of various chemical nature [1-4]. Usually this value varies in the range
from 30 to 60 g/m3. It is obvious that fire suppression efficiency of condensed aerosols is
substantially higher than for fire extinguishing powders and brominated halon...