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Revised August 27, 2009
U
SEFUL
E
QUATIONS FOR
H
YDRAULIC
A
NALYSES
Pump Performance
F
60
H2O,
.
.
fluid
g
sp
where
sp.g.
is referenced to
water
= 62.37 lbm/ft
3
@ 60 °F
hr
m
4
.
4
s
ft
449
.
.
500
hr
lb
gpm
,
3
3
m
g
sp
m
Q
Flow
.
.
psi
31
.
2
ft
g
sp
P
Head
31
.
2
.
.
ft
psi
g
sp
Head
P
1715
psi
gpm
3960
.
.
ft
gpm
P
Q
g
sp
H
Q
hp
Hydraulic
pump
hp
Hydraulic
bhp
hp
Brake
where
pump
is the pump efficiency, 0 – 1.
motor
hp
Brake
hp
Purchased
where
motor
is the motor efficiency, 0 – 1.
1 hp = 550 (ft lbf)/s
=
33,000 (ft lbf)/min
=
745.70 W
=
0.7457 kW
=
2,544.5 Btu/hr
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Unformatted text preview: Bernoulli Equation 2 2 2 2 1 2 1 1 2 2 z g g g V p z g g g V p c c c c where g c = 32.174 2 m s lbf ft lb Mechanical Energy Balance friction to due work lost P g V z g g W c c s 2 2 where = 1 for fully developed turbulent flow, and = 2 for laminar flow. W s = hydraulic work, (ft lb f )/lb m...
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This note was uploaded on 10/11/2011 for the course CHE 3013 taught by Professor Staff during the Fall '11 term at Oklahoma State.
 Fall '11
 staff

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