Table 3 Operating the two pumps at constant head 15 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 | 13 | 2550 | 16.5 | 13.5 |
2 | 2530 | 16.5 | 13.5 | 2820 | 19.2 | 13.8 |
3 | 2650 | 17.6 | 13.8 | 2900 | 20 | 14.1 |
4 | 2350 | Not operating | 13 | 2900 | 20 | 14.1 |
5 | 2830 | 19.2 | 13.8 | |||
6 | 2600 | 17.5 | 13.7 | |||