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Before selecting a flow meter, how to determine the maximum flow rate, normal flow rate, and minimum flow rate of the pipeline

2017-04-20View Original

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Before selecting a flow meter, how to determine the maximum flow rate, normal flow rate, and minimum flow rate of the pipeline
Reply #22017-04-20
This needs to be provided through manufacturing processes or production.
Reply #32017-04-20
Is there any engineer in the process field? Please help!
Reply #42017-04-20
It should be based on the load of the process unit; if not, use amounts of 120%, 100%, and 60%, which is my usual practice
Reply #52017-04-20
It depends on the process requirements; doubling the maximum flow rate should be sufficient
Reply #62017-04-20
This is determined by the process; the usual flow rate is the one under normal operating conditions, that is, the flow rate at the design load. The maximum flow rate is the flow rate required at the maximum production load. For the minimum flow rate, my experience suggests taking 1/10 of the maximum flow rate, or setting it to none.
Reply #72017-04-20
For example, the nitrogen generator has an output of 1500 cubic meters per hour at a pressure of 0.6 MPa. The outlet pipe has a diameter of 108 mm (at point A); it then narrows to a diameter of 300 mm. From this 300-mm pipe, a branch with a diameter of 100 mm is formed (at point B). At the end of the 300-mm pipe (at point C), the diameter narrows again to 100 mm (at point D), resulting in two branches: one with a diameter of 80 mm (at point E) and another with a diameter of 50 mm (at point H). How can we determine the maximum and normal flow rates at points A, B, C, D, E, and H?
Reply #82017-04-20
Which master can help calculate it?
Reply #92017-04-20
The standard practice is for the process piping team to request the necessary funds; they have the design flow rates, and they can also calculate these values based on the capacity of the pumps upstream
Reply #102017-04-21
@Foenix: How do I calculate it? Can you teach me? Is there a formula?

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