Step 1:
Process Data Inputs |
1.1 |
Fluid (eg butane) |
1.2 |
Pumping Temperature (F) |
1.3 |
Barometric Pressure, in psia |
1.4 |
Pressure on the surface of the liquid in a closed suction tank, in psig (Use zero (0) psig for sumps and ATMS. tanks ) |
1.5 |
Vapor Pressure at the maximum pumping temperature, in psia |
1.6 |
Fluid's Specific Gravity |
1.7 |
Elevation head in feet (Use positive value for flooded suction, use negative value for lifting suction) |
1.8 |
Friction loss in feet in the suction pipe at the required capacity |
1.9 |
Required NPSH margin in feet |
Step 2:
Solve |
2.1 |
Proof steps |
2.2 |
Solve for the NPSHa centrifugal pump |