pump and ventilator efficieny |
Calculation of the efficieny:
The efficiency of the gearbox and the coupling will be set to 1 (η2=1).
With factor S (1 <= S <= 2) you determine how much reserve output a IEC norm motor should at least have. The rated power Pn will be chosen from the following rating chart.
- Enter volume flow V at best efficiency point.
- Enter the pump head H at best efficiency point.
- Enter power reserve S.
The efficiency of the gearbox and the coupling will be set to 1 (η2=1).
With factor S (1 <= S <= 2) you determine how much reserve output a IEC norm motor should at least have. The rated power Pn will be chosen from the following rating chart.
| Pn [kW] | 0.75 | 1.1 | 1.5 | 2.2 | 3.0 | 4.0 | 5.5 | 7.5 | 11 | 15 |
| Pn [kW] | 18.5 | 22 | 30 | 37 | 45 | 55 | 75 | 90 | 110 | 132 |
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