For a DN150 pipe transporting desalinated water at a pressure of 8-9 kilograms, what is the approximate flow rate?
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This post was last edited by security on 2011-7-8 at 15:56. Question: For a DN150 pipe used to transport desalinated water under a pressure of 8-9 kilograms, what is the approximate flow rate of the fluid?
The key to your question is the flow rate, right~~ The exact value of this flow rate can only be determined during the design process; of course, the flow volume is also known. But it is possible to make an estimate; according to the \"common flow velocity ranges for various media in pipes\", for water and liquids with similar viscosity, when the pressure is 10 kilograms or less, the flow velocity range is 0.5 to 3 meters per second, assuming the pipe material is steel. You can calculate based on this.
Thank you very much :). We pump it in using a pump with a flow rate of 137 cubic meters.
With the pipe diameter unchanged and flow rate constant, does a higher pressure result in a higher flow velocity?
Q=0.7854*D^2*3600*V. Here, Q represents the flow rate, V represents the velocity, and D represents the diameter of the pipe. It can be seen that there is no relationship between the flow rate and pressure
Reply to 6# hxylt: A flow-limiting orifice plate restricts flow by limiting the velocity; what do you think? ? Hehe:)
As mentioned in 6L, there is no direct mathematical relationship between pressure and flow rate. However, the level of pressure affects the choice of flow rate; in other words, it influences the decision regarding the diameter of the pipes when designing.
Reply to 4#: Xin Gong DN150, with a pump flow rate of 137 cubic meters. It has basically reached the upper limit of the economic flow rate; typically, the flow rate limit for DN150 is around 154 cubic meters. Beyond this limit, the resistance in the pipeline increases significantly. Of course, it’s better to determine this value through calculations.
Reply to 6# chxp110: This is only true for the flow control orifice plate locally; the overall flow rate remains constant
It can be roughly thought of this way: by determining who’s gravitational potential energy is converted into kinetic energy, the flow velocity can be known, and then the flow rate can be calculated based on the cross-sectional area. But that’s only based on an ideal situation. In practical traditional Chinese medicine, factors such as pipe resistance and frictional forces in fluid mechanics are taken into account. It can be roughly estimated.