Modified water for fire extinguishing
Water modification technologies for fire extinguishing provide not only increased saturation of protected surfaces, but also allow to obtain air-mechanical foam of various multiplicities and significant stability. Such a result can be achieved by inforcing on water both with the help of various reagents and non-reagently, for example, with the help of alternating electric fields. In this case, the supramolecular structure of water changes, which causes a decrease in surface tension at the interface. A similar result can be obtained both immediately before using modified water for fire extinguishing, and during its storage. Not only inorganic substances, but also carbon nano particles can be used as reagents.
Electro physical water treatment does not require significant energy costs (no more than a few watts per cubic meter). Such techniques increase the extinguishing capacity of water by more than 50-100%, which is extremely important for extinguishing, for example, large volume forest fires. Additives can also be added directly to the tank of a / m AC before its departure or after water is taken by a BE-200 type airplane. All modifiers exhibit an inhibitory effect, by slowing down the development of radical chain reactions of burning.
The latest development of solid foam
A specialized two-component composition for fire extinguishing, consisting of component A and component B. The new method allows controlled foam hardening in the period from 2 to 30 seconds. The formed foam consists of structured silica gel nanoparticles, while repeating the morphology of air bubbles dispersed in a solution of surfactants.
The chemical structure and hierarchical morphology make it possible to develop the thermal insulation ability of foams to a huge value of specific heat capacity of more than 2.5 kJ / (kg • °С). The unique features of this foam make it possible to achieve a specific consumption of fire extinguishing agent when extinguishing fires at the level of 1L/m2 compared to 5L/m2 of fire extinguishing agent based on a standard mass-produced surfactant. The technology can be used in extinguishing fires in ammunition depots and bases, in forests and agricultural lands, explosives and chemicals, rubber products and fuels and lubricants, etc.
Fire extinguishing automatic throwing device (automatic) and its fire extinguishing charges
Each charge consists of a polymer shell filled with a fire extinguishing agent.
«Dry water» is used as a fire extinguishing filler. This substance is safe for people, absolutely harmless to the environment and does not cause damage to property. In addition, the extinguishing agent does not conduct an electric current (dielectric), has a low saturation effect and is not a solvent.
Therefore, this system can be used to extinguish objects under a voltage of up to 35 kW. Charges are fired from an automatic machine from a distance of up to 100 meters, which solves the main problem in firefighting — by completely excluding the possibility of harm to the health of the service personnel engaged in extinguishing the fire.
Technical characteristics of the standard propellant charge:
Filler: Novec 1230 for either a substance of this category included in the standard rules and regulations for use in automatic fire extinguishing installations;
Charge diameter- 0.68 inches or 17.27 mm;
Charge radius — 8,636 mm;
Wall size — 0.7 mm;
Inner diameter — 7,936 mm; Volume of 1 charge – 2.0 ml;
