High Pressure Water Mist Fire Protection System

1. Activation & Detection
* Fire Detection: Sensors (smoke, heat, or flame detectors) identify a fire and trigger the system.
* Control Panel Activation: The control unit activates the high-pressure pump and opens valves to direct water flow to the affected zone.

2. High-Pressure Water Generation
* Pump Pressurization: A dedicated high-pressure pump (typically 70-200 bar or 1,000-3,000 psi) pressurizes water from a storage tank or mains supply.
* Stable Pressure Maintenance: The pump ensures consistent pressure even as water is discharged, critical for effective mist generation.

3. Atomization at Nozzles
* Nozzle Design: Specialized nozzles use high-pressure water flow to shear the water into micron-sized droplets (10-200 microns in diameter).
* Mist Formation: The tiny droplets create a dense fog-like mist, vastly increasing the water's surface area compared to traditional sprinklers.

4. Fire Suppression Mechanisms
The fine mist achieves fire suppression through three key physical mechanisms:
a) Rapid Cooling (Heat Absorption)
* Evaporation: The large surface area of the droplets allows instant evaporation, absorbing heat energy from the fire.
* This cools the flames and surrounding gases below the fire's ignition temperature.

b) Oxygen Displacement
* Steam Expansion: Evaporated water turns to steam, expanding up to 1,700 times in volume.
* This dilutes oxygen levels in the fire zone.

c) Radiant Heat Blocking
* Mist Curtain: The dense mist scatters and absorbs radiant heat, shielding unburned fuel and adjacent areas from ignition.

5. Post-Suppression Benefits
* Minimal Water Damage: Limited water volume (often < 1 liter/min per nozzle) reduces collateral damage to assets.
* Re-ignition Prevention: The cooling effect and residual mist inhibit re-flash of flammable materials.

Closed high pressure water mist nozzle:

The closed water mist nozzle is made of austenitic stainless steel and consists of a shell, a nozzle, a temperature-sensitive glass ball, etc. Its core component is a plurality of centrifugal nozzles installed on the conical surface of the shell. The atomization mechanism is to utilize the rotating liquid produced by the swirling parts in the nozzle to accelerate and eject the hollow diffusion cone-shaped liquid film through the outlet channel, and use the speed difference between the liquid and the outside air to break up and atomize

Open high pressure water mist nozzle:

The open water mist nozzle is made of austenitic stainless steel and consists of a shell, a nozzle, etc. Its core component is a plurality of centrifugal nozzles installed on the conical surface of the shell. The atomization mechanism is to utilize the rotating liquid produced by the swirling parts in the nozzle to accelerate and eject the hollow diffusion cone-shaped liquid film through the outlet channel, and use the speed difference between the liquid and the outside air to break up and atomize.