CTRL TIME DELAY MONITOR

[Sal Marsico]

To whom it may concern,

I am trying to simulate the delay associated with fill time of a dry sprinkler system. If the activation temperature is reached for a heat sensor tied to a sprinkler with a CTRL delay time incorporated. The time before water particles are injected will not happen before the delay time condition is met. If a second sprinkler is activated after the system begins to fill, the delay associated with the fill time for that second sprinkler would be less. Is there a way to incorporate this behavior of reduced delay for successively activated sprinkler heads automatically?

Best Regards,

Sal

[dr_jfloyd]

I think your easy options are:

1) Use the worst case time for all heads. The fire code limits flooding time so this number won't be that large for a properly designed system

2) A primary factor is the volume of pipe to be flooded between the water source and the open head. You could have a CTRL for each head with a different delay time.

3) Run FDS. See the sequence of head operations. Rerun FDS with explicit times for water delivery based on the sequence.