For a fog stream, there is a maximum reach; any further increase in nozzle pressure will primarily increase which of the following?

For a fog stream, there is a maximum reach; any further increase in nozzle pressure will primarily increase which of the following?

• A. Temperature
• B. Volume
• C. Speed
• D. Mist density

Answer: (B)

When a fog stream has its maximum reach, the spray pattern and distance are fixed by the nozzle design and expansion of the fog. Pushing the nozzle pressure higher cannot push the plume any farther, but it does force more water through the same pattern. The extra pressure increases the flow rate, so the volume (how much water per second) goes up. Temperature and the basic speed of the droplets don’t change in the same primary way, and while pressure can affect droplet distribution a bit, the dominant effect once reach is maxed is more water being delivered.

When a fog stream has its maximum reach, the spray pattern and distance are fixed by the nozzle design and expansion of the fog. Pushing the nozzle pressure higher cannot push the plume any farther, but it does force more water through the same pattern. The extra pressure increases the flow rate, so the volume (how much water per second) goes up. Temperature and the basic speed of the droplets don’t change in the same primary way, and while pressure can affect droplet distribution a bit, the dominant effect once reach is maxed is more water being delivered.