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Why is there such a large difference in efficiency among centrifugal pumps ordered from the same manufacturer and in the same batch?

2019-03-10View Original

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Why is there such a large difference in efficiency among centrifugal pumps ordered from the same manufacturer and in the same batch?
Reply #22019-03-10
Although the head is quite similar, the flow rate differs significantly, as does the specific speed; therefore, the efficiency is different
Reply #32019-03-10
It’s not the case that the lower the traffic volume, the lower the efficiency. Why are the efficiencies different when the traffic volume is 6? And why is the efficiency lower when the traffic volume is 7.2?
Reply #42019-03-10
CPL3200cpl refining unit – what is your scale?
Reply #52019-03-10
For the specific speed, refer to GB/T13007-2011 – Centrifugal Pumps – Efficiency; you can check this standard
Reply #62019-03-10
There’s no reason; that’s just the way the impeller is designed. An impeller can produce different head and flow rates through cutting. Both the design and manufacturing factors of two- and three-blade impellers affect efficiency
Reply #72019-03-11
It is meaningless to compare the efficiency of pumps from Golden Eagle Fluids of different models and with different parameters; it’s like trying to determine which part of your body – your thigh, calf, waist, or neck – is thicker.
Reply #82019-03-11
This post was last edited by foam_ZPTK on 2019-3-11 08:36. Is the cavitation margin 9.58? !
Reply #92019-03-11
Please use polite language, okay? lol

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