How is the flow rate in process pipelines determined?
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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?
Are there any engineers in the process field? Please help!
It mainly depends on the gas consumption at the end of each pipeline, rather than the flow rate of the main pipe.
I don’t think it has anything to do with the diameter of the pipe; the size of the diameter only affects the level of pressure drop, and it’s related solely to the gas usage downstream
Principles of Chemical Engineering, Chapter 1: Pipeline pressure drop and flow rate, flow distribution in branch pipelines – just apply Bernoulli’s principle