When water mist is used, it generates several other extinguishing effects that destroy the conditions necessary for fires to burn, and/or which can result in neutralizing the actual combustion.
1. Heat extraction
The large water surface formed by the small droplets creates the conditions for an optimal exchange of energy between the water mist and the surrounding area. When the water droplets come into contact with the fire, they extract the heat until they evaporate. Of all known extinguishing materials, water has the highest evaporation enthalpy (2442 J / g).
2. Inerting effect
The water mist is drawn into the fire by the air, where due to the high heat, it quickly evaporates. Due to the enormous increase in the volume of the water droplets as they evaporate, the oxygen is displaced at the source of the fire, and the fire is extinguished.
Additional positive side effects are the precipitation of gas, the leaching of smoke and gas, the increased safety for fire crews and personnel (because water mist lowers temperatures faster than any other medium, neutralizes the effect of smoke and cools down the objects.