What are water mist systems in NFPA 13?

Water mist systems are designed to control or extinguish fires through the use of fine water droplets. These systems generate a mist comprised of tiny water particles, which have a high surface area-to-volume ratio, allowing for efficient heat absorption and cooling of the fire. The mist can displace oxygen and provide a barrier to heat, effectively suppressing the flames.

Unlike traditional sprinkler systems, which discharge larger droplets of water, water mist systems can reduce water damage and are particularly effective in protecting sensitive equipment or areas where conventional sprinkler systems may not be as suitable. Their ability to operate effectively in various settings, including enclosed spaces or areas with higher fire risks, enhances their adaptability for modern fire protection needs.

In contrast, other options mentioned depict different types of fire suppression methods that do not accurately represent the functionality or design of water mist systems. Understanding the unique properties and advantages of water mist technology provides crucial insight into contemporary fire protection strategies outlined in NFPA 13.