Let’s discuss how to select a pump under these conditions for fluid transfer
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Transport medium: Water (clean)； Inlet pressure -80 Kpa (gauge) ； The output is fed into a tower unit at 50 kPa (gauge) ； Equipment import height: 40 m (relative to pump inlet) ； Normal usage flow rate: 1–3 m³/h ； How should the type and parameters of the pump be selected under these conditions?
Based on a loss of 5m per 100m, the outlet pipe diameter should be at least DN32; the pump’s net positive suction head must be around 1m or lower to function properly, with a head of 40 + 13 + pipeline losses. I don’t know the number of pipe lengths and valve elbows. It should be around 60 meters
Generally, pumps with high flow rates and high head are the better choice. For pumps with low flow rates but high head, are ordinary centrifugal pumps suitable? Should I still choose multiple levels?
A single-level flow selection is also acceptable, but it’s less efficient; multi-level selection is more efficient