UNIVERSALITY OF MECHANISMS OF FIRE SUPPRESSION BY VARIOUS EXTINGUISHING AGENTS

The dual universal mechanism of fire suppression by various fire extinguishing agents is shown. It is determined that optimum delivery rate of fire extinguishing agent is defined by analysis of experimental dependence of suppression time and specific consumption of substance per unit area on its delivery rate. It is revealed that dependence of specific consumption on delivery rate of extinguishing agent has an extreme character with clearly defined minimum. It is established that this effect is connected with occurrence of concomitant process, which accompanies the main, and depends on the quantity of fire extinguishing agent or on its delivery rate into a burning zone. It is shown that the concomitant effect prevents an extinguishing action of the main process as it is shown in ejection of oxygen into a burning zone.