- Pump motors
- Lift/elevator/crane motors
- Fan/compressor motors
The calculations are based on the following relationships:
1. Pump motors
P: Pump motor power
γ: Fluid specific weight
Q: Pump flow capacity
H: Discharge height
η: Motor – pump system total efficiency factor
2. Lift/elevator/crane motors
P: Lift/elevator/crane motor power
G: Maximum load to be lifted
v: Elevation velocity
η: Motor – pulley system total efficiency factor
3. Fan/compressor motors
where:
P: Fan/compressor motor power
Q: Air flow
ΔP: Pressure raise
η: Motor – fan (or compressor) system total efficiency factor
If you have different units than those used in the relationships above you can download the units converter that I developed some months ago.
This file can be opened with Office 2007 or newer. Please, remember to enable macros before using the workbook.