What is the principle and scope of application of a clean water fire extinguisher?

Update:25 Mar 2021

fire fighting equipment manufacturers

The fire extinguishing agent in the clean water fire extinguisher is clean water. Water has lower viscosity, higher thermal stability, higher density and higher surface tension at room temperature. It is an ancient and widely used natural fire extinguishing agent, easy to obtain and store.

It mainly relies on cooling and suffocation to extinguish fires. Because every kilogram of water is heated from room temperature to boiling point and completely evaporates, it can absorb 2593.4KJ of heat. Therefore, it uses its own ability to absorb sensible and latent heat to play a cooling and extinguishing effect, which is unmatched by other fire extinguishing agents. In addition, the water vapor formed after the water is vaporized is an inert gas, and the volume will expand by about 1700 times.

When extinguishing a fire, the water vapor generated by water vaporization will occupy the space of the combustion area, dilute the oxygen content around the combustion material, prevent fresh air from entering the combustion area, and greatly reduce the oxygen concentration in the combustion area, so as to achieve the purpose of suffocating and extinguishing. When the water is in the form of spray mist, the specific surface area of ​​the formed water droplets and mist droplets will greatly increase, enhancing the heat exchange between water and fire, thereby enhancing its cooling and asphyxiating effects.

In addition, it can also dilute some combustible and flammable liquids that are soluble in water; the water mist generated by strong jets can emulsify the combustible and flammable liquids, so that the surface of the liquid can be rapidly cooled, and the rate of flammable vapor generation To achieve the purpose of extinguishing fire.