Page 197 - Centrifugal Pumps Design and Application

172 Centrifugal Pumps: Design and Application

Notations

BHP Brake horsepower
F R Flow rate (SCFD)
f Blade passing frequency = N x vane no.760
f i Acoustic frequency == velocity of pulsation (ft/sec)/wave length 1
(ft)
GHP Gas horsepower
H Total pump head (ft)
HI Inlet enthalpy (Btu/lb)
H 2 Outlet enthalpy (Btu/lb)
H c Outlet enthalpy corrected (Btu/lb)
AH Differential enthalpy (Btu/lb)
1
AH Differential enthalpy corrected (Btu/lb)
M Mass flow rate (Ibs/hr)
N Speed (RPM)
PI Inlet pressure (psi)
P 2 Outlet pressure (psi)
Qi Pump capacity at inlet (GPM)
Q 2 Pump capacity at outlet (GPM)
S, Specific entropy at inlet (Btu/lb °R)
S 2 Specific entropy at outlet (Btu/lb °R)
S c Specific entropy at outlet corrected (Btu/lb °R)
SGi Specific gravity inlet
T, Temperature at inlet (°F)
T 2 Temperature at outlet (°F)
T c Temperature at outlet corrected (°F)
3
Vj Specific volume at inlet (ft /lb)
V 2 Specific volume at outlet (fWlb)
3
V c Specific volume at outlet corrected (ft /lb)
3
ji Density inlet (lb/ft )
3
7c Density corrected (lb/ft )
References

Doner, O.» "Pump Selections For Pipeline Applications," personal file.
Ross, R. R., "Centrifugal Pumps For Pipeline Applications," ASME
Pipeline Engineering Symposium, presented at 6th annual Energy
Sources Technology Conference and Exhibition, Houston, Texas, Jan-
uary 30, 1983 to February 3, 1983. Reproduced with the permission of
the publisher, The American Society of Mechanical Engineers.
Starling, Kenneth E., Fluid Thermodynamic Properties For Light Betro-
leum Systems, Gulf Publishing Company, Houston, Texas, 1973.