calc_example

Total head, N.P.S.H. and other calculations…21
Pressure head loss due to fittings friction
SECTION FLOW TYPE QTY DIA VELOCITY v 2 /2g K ∆H FF7-2
(USgal/min)
(in) (ft/s) (ft fluid) (ft fluid)
L 7 400 Pipe exit 1 4 10.21 1.62 1 1.62
Total
∆H FF7-2
Table 18
Pressure head loss due to equipment
p(
psi)
H ( ft fluid)
= 2.31
SG
SECTION FLOW TYPE
(USgal/min)
L 7 400 Control
valve
Total
∆H EQ7-2
Table 19
QTY ∆p SG ∆p ∆H EQ7-2
(psi)
(ft fluid) (ft fluid)
1 4.24 0.98 10 10
Total static head
z 7 z 2 z 2 -z 7 (ft fluid)
2846 2841 - 5
Velocity head difference between points 7 and 2
v 7 v 2 v 2 7 /2g v 2 2/2g v 2 2/2g – v 2 7 /2g (ft fluid)
10.21 0 1.62 0 - 1.62
Tank pressure head at the outlet of the system
H 2 (ft fluid)
0