Pump Equations and Formulas Calculator
Fluid Mechanics and Hydraulics
Solving For Brake Horsepower
Note: Equation for water at 68 Fahrenheit. Usually, temperature correction for water is negligible.
Inputs:
Conversions:
| Q | = | 0 | | = | 0 | gallon/minute |
| H | = | 0 | | = | 0 | foot |
| n | = | 0 | | = | 0 | |
Solution:
| brake horsepower (WHP) | = | HAS NOT BEEN CALCULATED | |
Other Units:
| WHP |
= |
water horsepower |
| Q |
= |
flow rate or discharge |
| H |
= |
total head |
| n |
= |
pump efficiency |
| BHP |
= |
brake horsepower |
| NPSH |
= |
net positive suction head |
| V |
= |
velocity of fluid or liquid |
| p |
= |
impeller inlet pressure |
| pv |
= |
vapor pressure of fluid or liquid |
| SW |
= |
specific weight of fluid or liquid |
| g |
= |
acceleration of gravity |
References - Books:
1) P. Aarne Vesilind, J. Jeffrey Peirce and Ruth F. Weiner. 1994. Environmental Engineering. Butterworth Heinemann. 3rd ed.
