How to improve the operating efficiency of pumps?
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Our unit has a hydrochloric acid pump with a flow rate of 30 m3/h, a head of 44 m, and an efficiency of 55%. However, the actual process requirements are a flow rate of 2 m3/h and a head of 40 m; under these conditions, the pump operates outside its performance curve, resulting in an efficiency of less than 28%. I would like to ask fellow sailors: what methods can be used to improve the efficiency of a pump?
Replace it with a low-flow pump. The actual flow rate is much lower than the designed flow rate, and operating in this condition can easily cause damage to the pump.
The flow rate is too low; it’s better to use a metering pump, as that will improve efficiency significantly. Centrifugal pumps have very low efficiency at such low flow rates.
Cut the impeller flow channel; generally, companies won’t replace the pump for you, so this is the best solution.
If operations often change under different conditions, use an inverter for the previous one.