Using high pressure water mist, FOGMAKER's fire suppression system has been developed specifically for engine compartments and semi-enclosed spaces - which is where the vast majority of fires in mobile equipment and vehicles start.
The FOGMAKER system is particularly suitable for machines where space to mount a storage cylinder is limited, as is the case with most industrial machines.
A fire requires three elements to sustain combustion - oxygen, heat and fuel. Removing one of these elements from the environment will extinguish the fire. The majority of fire suppression system’s approach is to remove oxygen from the fire zone and thus suffocate the fire. However, this is often a temporary situation: as air and oxygen return to the fire zone, with the presence of the all three elements, the fire often re-ignites.
Micro droplets of water based extinguishant are generated by patented nozzles under high pressure. These droplets flood the area being protected and evaporate immediately when they come into contact with heat. During the evaporation process,1 litre of water will expand into 1700 litres of water vapour. This rapid expansion process displaces air and prevents oxygen supply to the fire.
During the vaporization process the water mist cools the hot gases and hot surfaces in the engine compartment. It takes 1 calorie to heat up one gram of water by 1°C, but 540 times more energy to evaporate the same amount of water. Through this vaporization process effective cooling is achieved reducing the risk of re ignition.
FOGMAKER suppressant also includes, in low concentrations, an Aqueous Film Forming Foam (AFFF). This forms a protective barrier on the surface of any flammable material or fuel, thus preventing the fuel from being available for combustion.
Typical configuration of the FOGMAKER System
1 litre of extinguishing fluid produces 1700 litres of water vapour and at the same time absorbs 540 000 kilocalories of heat.
With reference to Figure 1