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Water Mist Fire Suppression Systems

“A step towards saving our precious water resources”

Water Mist Systems are characterized by relatively fine water droplets, which assist cooling by evaporative process. Some droplets get entertained to the seat of the fire by air convection, while others reach the fire from above due to high momentum imparted to them.

A water spray for which the Dv0.99* for the flow-weighted cumulative volumetric distribution of water droplets, is less than 1000 microns at the minimum design operating pressure of the water mist nozzle.

How does Water Mist System Work?

As a consequence of the extinguishing water being split up into droplets, a reaction surface is created via which the heat from the fire is absorbed. It takes 335 kj of energy to heat 1 liter of water from 20 to 100 0C, and an additional 2257 kj to transform the water to steam.

The larger the reaction surface is, the higher the potential cooling effect is. The smaller the mean droplet size, the more efficient the cooling effect. The smaller droplets, which will tend to fall slower than larger droplets, will have a more efficient cooling effect. The cooling effect refers to the cooling of the air and gases around a fire and not to the cooling of the fire load itself. Thus, water mist is the medium with the highest known heat absorption capacity.

The pressure used in the water mist fire prevention system is an important factor in water mist quality. The features of water mist have a direct impact on its effectiveness in firefighting. With our EUROSAFE® high-pressure water mist fire prevention systems, we have been the pioneers of effective and safe water mist-based fire protection. Our high-pressure water mist systems set the highest standards via inventive product development, persistent testing, and decades of expertise.

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