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Newbie. How to determine the pump head and pipe diameter?

2018-07-05View Original

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First, determine the flow rate, then look up the flow velocity in a table to determine the pipe diameter. Then, the drag loss is calculated using Bernoulli’s equation to determine the head; should the flow rate be increased by 1.1 times and the head by 1.15 times? I. But since there are no pipes, how can I calculate the pressure loss in my pipeline? I don’t know about the assistant’s loss; how can I determine the head? II. If this pipeline is a drainage pipe that leads into a trench at a great height (in an inverted U shape), should the height difference be taken as the highest point of the pipeline? Are both the 1-2 dynamic head values 0?
Reply #22018-07-06
Your idea is correct; just follow this approach

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