Cylinder flow rate
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May I ask how many cubic meters of water can the hose convey in one hour when it is fully filled?
It is related to the pressure difference between the upstream and downstream sides; a larger pressure difference results in greater driving force, faster flow velocity, and thus a higher flow rate.
There’s almost no pressure; it flows at atmospheric pressure. I just need an approximate value
Flow rate: 0.5–1 m/s, estimated based on pipe diameter
It can possibly be estimated through calculation. Water can also be poured into an empty bucket, weighed, the time measured, and then the flow rate calculated. With different valve openings, the pressure and flow rate also change.
This post was last edited by arpcd on 2018-3-7 at 14:09. If you just want a rough estimate, the diagram below is perfect for you; you can choose an appropriate value for the roughness coefficient of the hose to make an estimation. . . This diagram is suitable for estimating the flow rate in rainwater and sewage pipes used for waste discharge; as long as the roughness coefficient is chosen correctly, it can be quite reliable. In other words, by using the actual flow rate measured with a bucket, it is possible to determine an accurate roughness coefficient. . The diagram is simple; just use a ruler or string to mark it out. Judging from the picture, the rubber hose is of size 6 or 7, with an inner diameter of around 20 mm. Based on empirical data, the flow rate when the hose is fully filled is between 0.5 and 1 m3/h; it won’t exceed 1.5 m3/h. .