calc_example

Total head, N.P.S.H. and other calculations…12
Pressure head loss due to pipe friction
SECTION FLOW DIA VELOCITY ∆H FP /L
L ∆H FP
(Usgal/min) (in) (ft/s) (ft/100 ft pipe) (ft) (ft fluid)
L 1 500 6 5.67 1.64 4 0.06
L 2 500 6 5.67 1.64 2 0.03
Total
- - - - - 0.09
∆H FP1-S
Table 8
Pressure head loss due to fittings friction
SECTION TYPE
QTY FLOW
(USgal/min)
DIA
(in)
VELOCITY
(ft/s)
v 2 /2g
(ft fluid)
K
∆H FF
(ft
fluid)
L 1 Inward proj. 1 500 6 5.67 0.5 1 0.5
entrance
L 1 Butterfly 1 500 6 5.67 0.5 1 0.5
L 2 Butterfly 1 500 6 5.67 0.5 1 0.5
Total
- - - - - - - 1.5
∆H FF1-S
Table 9
Pressure head loss due to equipment
SECTION TYPE QTY FLOW
(USgal/min)
∆p
(psi)
SG ∆p
(ft fluid)
∆H EQ1-S
(ft fluid)
L 2 Filter 1 500 3 0.98 7.07 7.07
Table 10
Suction static head
z 1 z S z 1 -z S (ft fluid)
2803 2802 1
Tank pressure head at the inlet of the system
H 1 (ft fluid)
0
Velocity head at the inlet of the system
v 1
v 2 1/2g (ft fluid)
0 0