Pump Calcs
Simplified Pump Calculations for Sophisticated Results
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Basic
Centrifugal Pumps
Brake horsepower
Pump Efficiency
Specific speed (US)
Suction specific speed (US)
Electrical Motors & Systems
HP - AC Single Phase
HP - AC Three Phase
HP - AC Two Phase
HP - Direct Current
KW - AC Single Phase
KW - AC Three Phase
KW - AC Two Phase
KW - Direct Current
Mechanical Seals and Gaskets
Throat Bushing Sizing
Miscellaneous
Belt-Drive Pulleys
MTBR
PD Pumps
Power pump hp
Single acting displacement
Piping Design
Piping Fitting and Valve Losses
Pressure, Head, and Flow
Converting fluid velocity to velocity head
Converting pressure to head
Converting velocity to flow
Pump Design
Peripheral velocity of an impeller
Shaft shear stress
Torque with hp and speed
Vibration
Acceleration, displacement
Velocity (in/sec) pk to g's
Velocity (in/sec) pk to mils pk
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PD Pumps
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Power pump hp
Power pump horsepower
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Equation
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Input 4 of 5 variables to solve for the unknown.
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Symbol
Variable
Input
Units
BHP
Brake Horsepower
horsepower
watts
kilowatts
foot-pounds/minute
foot-pounds/second
btu/second
btu/minute
btu/hour
Q
Flow Rate
gallons/minute
P
d
Discharge Pressure
pounds/in^2
P
s
Suction Pressure
pounds/in^2
ME
Mech Eff.
mech eff.
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See also
Calculations
Pump Efficiency with Electric Motor Driver
Time for a Motor and Pump to Reach Operating Speed
Be the Pump Designer
Tables
Correcting existing power-factor to desired power-factor
ANSI Pump Dimensional Data
Definitions
Pump Motor Application
Active Power
Off Peak Power
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