The Benefits of High Pressure Water Mist Fire Suppression Systems

Jun 8, 2023 | news

Traditional fire sprinkler systems use large droplets of flowing water to suppress fires. However, high pressure water mist fire suppression systems use a very fine mist of small water droplets that are highly effective at controlling fires. These systems offer several advantages over conventional sprinklers.

How High Pressure Water Mist Systems Work

High pressure water mist systems work by spraying a fine mist of micro-droplets around 2500 times smaller than typical sprinkler droplets. This fine mist:

• Requires less water flow compared to sprinklers
• Penetrates deep into objects to cool burning fuel sources
• Evaporates quickly, absorbing high amounts of heat
• Adheres to surfaces, providing a cooling film

Benefits of High Pressure Water Mist Systems

• More effective heat absorption – The mist’s large surface area and quick evaporation allows it to absorb heat up to 5 times faster than sprinklers.
• Less water damage – The fine mist uses 40-90% less water, minimizing water damage to sensitive items and electrical equipment.
• Smoother temperature reduction – The cooling effect of the mist is more uniform and gradual, protecting delicate items.
• Greater range – The mist can travel further through openings and access remote areas, such as ducts and plenums.
• Suitable for high-heat fires – The evaporative cooling effect of the mist is effective on hydrocarbon fires with temperatures over 1500°F.
• Environmentally friendly – Minimal water usage and no harmful chemicals make this a “green” fire suppression option.
• Works on multiple fire types – The fine mist can suppress Class A, B, C and sometimes K fires involving solids, liquids, gases and energized electrical equipment.

How High Pressure Water Mist Systems Work

A high pressure water mist system consists of:

• A pressurized water supply capable of at least 300 psi to create the fine mist
• Activated via heat detectors, smoke detectors or other firedetection devices
• A network of small-bore piping and nozzles to distribute the mist
• Nozzles designed specifically to produce the extremely fine mist at the required pressure
• A mist particle size range between 30 to 150 micrometers for optimal fire suppression
• An optional inert gas component to further suppress combustion and extinguish flames