FOGTEC systems fight fires with pure water which is atomised at pressures ranging from 60 to 200 bar. Tiny droplets are produced, that comply with NFPA 750 Class I, increasing the surface area of the water used a hundredfold when compared with a conventional sprinkler system. Two unique effects, with a unique impact, then occur:
- the intensive cooling effect in the entire area surrounding the fire,
- the localised oxygen displacement effect right at the source of the fire.
These two effects combined mean that the energy of the fire is depleted much faster than it is the case with other fire fighting systems. At the same time, people and assets are protected from the effects of heat and water damage.
FOGTEC misting systems are optimised for the relevant application in terms of droplet sizes used. As a result, the water mist systems are particularly effective and require only very small quantities of water, meaning the system components, including pipes and pumps, have a very small overall construction size.
Water mist nozzles
The heart of every FOGTEC system are special water mist nozzles. Water is atomised via nozzle outlets, permitting variation of the spray pattern (spray angle), fl ow rate and droplet distribution according to the specifi c application. Depending on the system, open nozzles or glass bulb nozzles, similar to those of a sprinkler system, can be used.
Where activation is triggered via a fire detection system, a system with open nozzles is used, with an empty and therefore dry pipe system. In wet systems, glass bulb nozzles are used with wet piping. Pre-action systems are also possible in combination with a fi redetection system. A range of different nozzle types is available, for example concealed nozzles.