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| Formula For: |
Word Formula: |
Letter Formula: |
PUMP OUTLET FLOW
in Gallons/Minute |
| FLOW = |
RPM x PUMP DISPLACEMENT(Cu. In./Rev.) |
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| 231 |
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PUMP INPUT POWER
in Horsepower Required |
| HORSEPOWER INPUT = |
FLOW RATE OUTPUT(GPM) x PRESSURE(PSIG) |
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| 1714 x EFFICIENCY(Overall) |
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PUMP EFFICIENCY
OVERALL IN PERCENT |
| OVERALL EFFICIENCY
(%) = |
OUTPUT HORSEPOWER |
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x 100 |
| INPUT HORSEPOWER |
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| EffOV. = |
HPOUT |
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x 100 |
| HPIN |
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| OVERALL EFFICIENCY (%) = |
VOLUMETRIC Eff. x MECHANICAL Eff. |
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| EffOV. = |
EffVOL x EffMECH |
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PUMP EFFICIENCY
VOLUMETRIC IN PERCENT |
| VOLUMETRIC EFFICIENCY
(%) = |
ACTUAL FLOW RATE OUTPUT(GPM) |
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x 100 |
| THEORETICAL FLOW RATE OUTPUT(GPM) |
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| EffVOL = |
QACT. |
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x 100 |
| QTHEO. |
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PUMP EFFICIENCY
MECHANICAL IN PERCENT |
| MECHANICAL EFFICIENCY
(%) = |
THEORETICAL TORQUE TO DRIVE |
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x 100 |
| ACTUAL TORQUE TO DRIVE |
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| EffMECH = |
TTHEO. |
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x 100 |
| TACT. |
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PUMP DISPLACEMENT
IN CUBIC INCHES/REVOLUTION |
| DISPLACEMENT = |
FLOW RATE(GPM) x 231 |
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| PUMP RPM |
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PUMP TORQUE
IN INCH POUNDS |
| TORQUE = |
HORSEPOWER x 63025 |
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| RPM |
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PUMP TORQUE
IN INCH POUNDS |
| TORQUE = |
PRESSURE(PSIG) x PUMP DISPLACEMENT(CIPR) |
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| 2 x 3.14 |
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PUMP LIFE
B10 BEARING LIFE |
| B10 HOURS OF
BEARING LIFE |
=
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RATED LIFE HOURS |
x |
RATED SPEED(RPM) |
x |
(RATED PRESSURE(PSIG))3 |
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| NEW SPEED(RPM) |
(NEW PRESSURE(PSIG))3 |
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| B10 |
= |
RATED HRS. |
x |
RPMr |
x |
(P r)3 |
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| RPMn |
(P n)3 |
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