flow calcs
flow calcs
(OP)
can any body please tell me what the formula is for determining what the max flow of water (gals/min) is through a pipe at a given pressure (psi) per foot?
thanks
das123
thanks
das123
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RE: flow calcs
max dP, max velocity is just two obvious criteria
When you have choosen than then you must select a design value (eg. 0.5 bar/100 m or max. velocity 1 m/sec)
Best Regards
Morten
RE: flow calcs
Q = 236*d^2*sqrt[dP/(K*p)] and K = (f*L)/d
or
Q = 236*sqrt[(dP/L)*{d^5/(f*p)}]
where
Q gpm
dP delta Pressure psi
L length ft
d diameter inch
f friction factor, dimentionless, per Moody chart or from Crane TP-410 chart for turbulent flow.
p specific weight lbs/ft^3