Which advantage does a fog-stream nozzle have over a smooth-bore nozzle?

A fog-stream nozzle offers the advantage of absorbing a greater amount of heat due to the fine spray pattern it produces. When the water is dispersed into smaller droplets, it increases the surface area of the water. This larger surface area allows the water to interact more effectively with the heat in the environment, leading to enhanced cooling and heat absorption. This characteristic makes fog streams particularly effective for both extinguishing fires and providing protection to firefighters by cooling the surrounding environment.

Fog streams can also create a barrier against heat and smoke, which adds to their firefighting effectiveness in certain situations. This capability of a fog stream enhances firefighter safety and effectiveness during fire suppression activities.

While factors like wind impact and reach may still be relevant considerations, they do not exhibit the same clear advantages over smooth-bore nozzles as the ability of fog streams to absorb heat.