Specification :

The key to FOGTEC’ s fire fighting effectiveness is the generation of very fine water droplets. The size of the droplets is classified as NFPA 750 Class 1. This extremely small droplet size makes the FOGTEC system highly effective and uses only small amounts of water. The key factors are the systems ability to cool and the localised oxygen displacement effect.

Cooling effect
As a result of the water being atomised at high pressure, the surface area available for cooling is considerably greater than that of conventional low pressure systems. This means FOGTEC systems extract the energy ( heat) far more rapidly and effectively from the fire. The strong cooling effect serves not only to fight the fire but also to protect persons and property against the effects of radiated heat. Water mist shields also effectively protect construction elements such as walls, doorways, facades etc.

Oxygen displacement
The small water droplets rapidly evaporate and sequentially withdraw the energy and oxygen of the fire. Evaporation occurs only where there is a high temperature. Where there is a low temperature there is no steam generated so these areas may be used to escape. The vaporization of the water increases the water volume by 1640 times and the oxygen is displaced locally at the fire source. As a result, a localised inerting effect is generated at the fire source. This is comparable to the effect of an inert extinguishing gas, although when using such a gas, the air oxygen content has to be reduced in the whole area to be effective. The larger water droplets generated by low pressure water mist systems or other conventional water fire fighting systems, convert to vapour at a much slower rate, and here there is a substantial part of the droplet that does not convert at all. Therefore the localised oxygen displacement effect of the FOGTEC systems, operating with high pressure, is a considerable advantage.

In order to achieve optimum results in fire fighting, FOGTEC adapts the amount of water used, the droplet size distribution and the number and positioning of nozzles to each specific application.
FOGTEC systems are 100% environmentally friendly and harmless to personnel. Unlike many chemical-extinguishing gases, FOGTEC water mist systems neither destroy the ozone layer nor do they contribute to the greenhouse effect. A pre-warning time prior to activation to protect persons normally is not necessary. There are no corrosive by-products generated to impair electrical or electronic components.