Calculation of operating flow rate for centrifugal pumps
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When a centrifugal pump is in operation, the inlet and outlet are both open, and the pump does not have a flow meter. How can one estimate the flow rate of this pump? The pipe diameter appears to be DN250 at the inlet and DN200 at the outlet; the outlet pressure is 0.1 MPa. The rated flow rate seems to be 240 M, with a head of 10 meters.
What is the inlet pressure? Calculate the head based on the pressure difference, and then refer to the curve to find the flow rate
No curve, inlet pressure difference of 0.1 MPa
No curves? There must be models available, right? They can be used to estimate based on known curves~~~~
No, there are only the parameters mentioned above
Given the pump’s rated flow rate and head, if the pump outlet is kept fully open during normal operation but only half or one-third of the head is utilized, by how much can the flow rate increase?