Pipe pressure
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For example, if there is an overflow at a height of 20 meters, flowing down to a level of -6.5 meters, the resistance in the pipeline is approximately 100 kPa. So what is the maximum operating pressure (gauge pressure) for the pipeline? 2. How is the normal operating pressure calculated (gauge pressure)? 3. Is a design pressure of 1.0 MPa sufficient? mainly, I need the experts to help answer the first two questions
This question should be simple, but I just can’t figure it out. I hope someone experienced can help me understand it
Does it overflow through the opening? Then there’s no pressure.
It is an open-flow. Why is there no pressure?
Considering the extreme case, if we treat this pipe as a container with an open top, do you think it is a pressure vessel? Are you under pressure? Of course not, it’s not considered a pressure vessel.
Twenty meters in height – isn’t the pressure quite high at that depth?
Considering the limit case, if the low point is closed, there is a height difference of 26.5 m between the low point and the high point, resulting in a static pressure of approximately 0.265 MPa (with the density of the medium taken as that of water).
Thank you. So this is gauge pressure, right?
The design pressure doesn’t need to be that high; it can be set at ≥ the maximum operating pressure