How to calculate the flow velocity of a gas in a pipe based on its pressure
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This post was last edited by ilvy on 2010-4-1 10:06. How can one calculate the flow rate of a gas in a pipeline based on its pressure? For example, if the pressure in an ammonia pipeline is 8*100000 Pa, what is then the flow rate of the ammonia in that pipeline? What is the connection between the two? Shall we all come and discuss it?
Does the poster mean ammonia at 8.1 MPa(a)? I remember that for compressed gases at 3–30 MPaG, the flow rate is between 0.5 and 3 m/s. Please refer to HG/T 20570.6-1995 \"Selection of Pipe Diameter\"; it’s still advisable to read more on the basic principles of operation.
The chemical engineering design manual provides recommended flow rates for various fluids.
The fact that the original poster asked such a question shows that they are not good at asking questions.
Calculation formula △P=ρ*u2/2
I just arrived and am not good at using the site’s search function
Hehe! The pressure difference determines the flow rate, not the pressure
Agreed! Agreed! For the design flow rate, please refer to the relevant standards.
The value provided for HG20570 is the recommended flow rate; the actual flow rate should be calculated based on the allowable pressure drop of the pipeline.