What is water mist technology?
The term water mist refers to the spray of a water-based extinguishing system with particularly small water droplets.
The small water droplets are generated by means of special sprinklers operating at higher pressure than in a traditional sprinkler system.
This considerably increases the surface area of the water droplets, and by exploiting the physical properties of the water a higher cooling effect and localised evaporation of the water both work to control the fire.
This cooling and smothering effect enables a particularly effective fire fighting with minimum consumption of water.
Conventional water distribution
- diameter of water droplets > 1 mm
- cumulative surface of 1 litre of water: ~3 m²
Water mist
- diameter of water droplets < 1 mm
- cumulative surface of 1 litre of water: ~60 m²
The adjustment of the system is achieved via the system operating pressure. The following system types are distinguished:
- low pressure systems < 16 bar (low pressure)
- high pressure systems > 16 bar (high pressure)
Both have a similar extinguishing and fire fighting effect.
On an international level different classifications - in relation to the system pressure - may be used.