Table 2 Operating the two pumps at constant head 22 m
From: Selection process of photovoltaic standalone pumping systems
Operating hours | Low radiation day flow rate (Q) m3/hr | High radiation day flow rate (Q) m3/hr | ||||
|---|---|---|---|---|---|---|
Operating speed (rpm) | Pump 1 | Pump 2 | Operating speed (rpm) | Pump 1 | Pump 2 | |
1 | 2330 | Not operating | 10.3 | 2550 | Not operating | 11.3 |
2 | 2530 | Not operating | 11.3 | 2820 | 10.4 | 12.5 |
3 | 2650 | Not operating | 11.9 | 2900 | 11.9 | 12.6 |
4 | 2350 | Not operating | 10.4 | 2900 | 11.9 | 12.6 |
5 | 2830 | 10.4 | 12.5 | |||
6 | 2600 | Not operating | 11.8 | |||