New extinguishing system:
Minifog ProCon protects cable ducts
A fire in a cable duct can damage material assets and cause business interruptions, leading to losses in the millions – in the worst cases even to personal injuries. Minifog ProCon offers effective protection with a minimal need for water. Extinguishing water use can be reduced even further compared to known extinguishing systems.
The new extinguishing concept has the advantage of efficient water mist technology, while its saves time and labour in constructing the extinguishing system, hence reducing costs. This is because in the event of retrofitting, Minifog ProCon – just like all Minifog systems – can be connected to existing extinguishing systems.
The set-up and functioning of the Minifog ProCon low-pressure water mist extinguishing system corresponds to the classic water spray extinguishing systems – with the difference that special Minifog impulse nozzles are installed in the cable ducts and cable rooms to be protected. In the event of fire a defined extinguishing area is triggered by the fire detection system and the fire is promptly fought with an extremely low volume of water mist. Water pressurisation is a mere 2.5 mm/min with a minimum pressure at the nozzle of only 5.0 bar.
This is made possible by taking efficient advantage of water’s physical properties. The extinguishing water is sprayed very finely via the Minifog impulse nozzles and the entire surface of the extinguishing water is multiplied by the smaller drop size spectrum. As a result, the heat of the fire is particularly well absorbed; whilst the fire source and surrounding area are immediately cooled. Vaporisation of the extinguishing water in the fire is also associated with a large amount of heat production, and the resulting water vapour simultaneously hinders the oxygen supply to the fire source: the reduction of the oxygen concentration in the immediate vicinity of the flame zone leads to an additional smothering effect. The arrangement of nozzles and the optimal droplet formation ensure that the source of the fire is reached, even if inhibiting factors exist, such as thermal currents or air movement.
