Sprinklermatic fire protection systems 18 827 views 1 30 01.
Water mist system working principle.
This creates a mist fog of ultra fine water droplets with an average size of 25 microns or less.
Mist cooling works by forcing water through our specially designed misting nozzles.
Consideration of the costs of a water mist system for residential premises does not simply include the costs of installation and provision of water supplies but also includes the costs for annual inspection testing and ongoing system maintenance.
Misting systems work by forcing water via a high pressure pump and tubing through a brass and stainless steel mist nozzle that has an orifice of about 5 micrometres thereby producing a micro fine mist.
The main characteristics of the water mist nozzle are shown in the fig 1.
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Water mist systems work a little bit differently than other fire suppression systems.
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When extinguishing a fire water mist produces a high rate of heat extraction and at the same time uses less water.
Flash evaporation can reduce the surrounding air.
Fire is suppressed with less water.
Fire protection is all about making people s life safe and easy even straight after the fire.
With high pressure mist cooling you will get an even smaller droplet size as little as 5 microns this creates a surface area larger than a football field from just one gallon of water.
Depending on the spray pattern the water input can be varied.
With low medium and high pressure systems available water mist systems can do everything from creating a fire suppressing fog to replacing traditional sprinkler systems.
Water mist systems are becoming an increasingly popular alternative to total flood carbon dioxide systems which can be dangerous to workers.
The water droplets that create the mist are so small that they instantly flash evaporate.
Characteristics of water mist nozzle one of the main design objectives is to minimize the operating pressure and operating flow rate but still gives sufficient amount of fine droplets with.
Hi fog makes this possible.
The small droplet size creates a greater surface area to absorb the heat of the fire the mist blocks radiant heat transfer to unburned fuel and it causes local inerting all while using 50 to 90 percent less water than sprinkler systems.
Now the system is even more reliable with its brand new heart the hi fog electric pump unit which takes fire protection to the next level.
Water mist fire fighting systems how it works.
