Darcy-Weisbach Pressure Drop Calculator vs Pump Power and Efficiency Calculator
Two calculators for the same neighbourhood of questions. Here is what each measures, what you feed in, and where you'd reach for one over the other.
Darcy-Weisbach Pressure Drop Calculator
Calculates pressure drop along a pipe section using the Darcy-Weisbach equation. Used by engineers designing water supply, HVAC, and industrial piping systems to size pipes and pumps correctly.
- Answers
- Pressure Drop (Pa)
- Inputs
- Friction Factor, Pipe Length, Pipe Diameter, Flow Velocity, Fluid Density
Pump Power and Efficiency Calculator
Calculates the shaft power a pump must deliver to move fluid against a given head, accounting for pump efficiency. Used when selecting pumps for water supply, irrigation, HVAC, and industrial process systems.
- Answers
- Required Power (kW)
- Inputs
- Flow Rate, Total Head, Fluid Density, Pump Efficiency
At a glance
| Darcy-Weisbach Pressure Drop Calculator | Pump Power and Efficiency Calculator | |
|---|---|---|
| Category | Fluid Mechanics | Fluid Mechanics |
| Answers | Pressure Drop | Required Power |
| Inputs | 5 | 4 |
| Result unit | Pa | kW |
When to use each
Calculates pressure drop along a pipe section using the Darcy-Weisbach equation. Used by engineers designing water supply, HVAC, and industrial piping systems to size pipes and pumps correctly.
Calculates the shaft power a pump must deliver to move fluid against a given head, accounting for pump efficiency. Used when selecting pumps for water supply, irrigation, HVAC, and industrial process systems.