parallel flow?

[brianpeters]

I take it that for series connnected piping runs the pressure drops just sum.

But for parallel runs haveing a common inlet and outlet can you calculate total pressure drop similar to parallel resistance?

I.E. if p1 and p2 are known pressure drops calculated individually for two legs of parallel piping would this be true,

Ptotal = p1*p2/(p1+p2)

or how would you calculate it?

regards, and thanks again
brianpeters

Posts: 2
Joined: Tue Nov 08, 2011 8:59 am

[PipeFlowCalcs]

If you have same inlet collector and same outlet collector for all pipes, than as pressure can be only one in each collector, pressure drop is the same in every pipe of paralell system.
Actual flow rate through each pipe is different based on the each pipe resistance.