Table 4: Design results for an allocated production rate of 3 t/d using an RDD-ESPP lifting system.

Pump Depth
/m
Pumping Speed
/rpm
Pump Diameter
/m
Production Rate
/(t/d)
Pump Efficiency
/%
System Efficiency
/%
Power Consumption by Lifting One Ton of Liquid
/(kWh/t)
1950 2 38 3 86.58 5.44 81.22
2000 2 38 2.98 86.01 5.4 81.76
2050 2 38 2.98 85.87 5.39 81.89
2100 2 38 2.97 85.75 5.39 82
2150 2 38 2.97 85.65 5.39 82.11
2200 2 38 2.97 85.54 5.38 82.2
2250 2 38 2.96 85.45 5.39 82.3
2300 2 38 2.96 85.35 5.39 82.39
2350 2 38 2.96 85.26 5.39 82.47
2400 2 38 2.95 85.17 5.39 82.56
2450 2 38 2.95 85.08 5.39 82.65
2500 2 38 2.95 85 5.39 82.73
3200 3 32 3.08 83.44 3.82 118.62
3250 3 32 3.08 83.36 3.82 118.74
3300 3 32 3.08 83.27 3.82 118.86
3350 3 32 3.08 83.19 3.82 118.98
3400 3 32 3.07 83.11 3.81 119.1
3450 3 32 3.07 83.03 3.81 119.22
3500 3 32 3.07 82.95 3.81 119.33