Closed Piping
Closed Piping
(OP)
Hi, I have a simple problem but I don’t know if I'm using the correct formula or procedure.
I have a fire pump rated at 14 bar with a churn pressure of 16 bar, the consultant wants to give the pressure at each tapping point for each building (16 buildings in site), the piping runs straight from the pump discharge line to the last building, so the question is, if the pressure in the discharge outlet of the pump is 16 bar, is the pressure at the inlet of the furthest building is also 16 bar during non-fire condition or should I consider hazen william formula to calculate the friction loss in piping from the discharge header up to the inlet point of that building.
Thanks!
I have a fire pump rated at 14 bar with a churn pressure of 16 bar, the consultant wants to give the pressure at each tapping point for each building (16 buildings in site), the piping runs straight from the pump discharge line to the last building, so the question is, if the pressure in the discharge outlet of the pump is 16 bar, is the pressure at the inlet of the furthest building is also 16 bar during non-fire condition or should I consider hazen william formula to calculate the friction loss in piping from the discharge header up to the inlet point of that building.
Thanks!





RE: Closed Piping
Only when you have flow will it be different or a change of elevation.
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way
RE: Closed Piping
RE: Closed Piping
I'm worried that your consultant actually wants to know (or should want to know) is the pressure at the furthest building when that building is using fire water on a continuous basis. Static pressure is one aspect, but operating pressure is what really matters....
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way