Gas flow velocity after compression by the compressor
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After being compressed by the compressor, the pressure reaches 15 MPa; what is the typical flow rate? Some sources indicate 15–25 meters per second, while others say around 3 meters per second
http://www.docin.com/p-305341533.html This link indicates that for compressed gas at 3-25 Mpa, the optimal flow rate is 0.5-3 m/s
It depends on the type of medium; generally, for compressed gases, it’s 0.5 to 3. For specific gases, check the relevant industry standards
May I ask, what industry standards should I refer to?
It can be simulated first.
The gas flow rate behind the compressor depends on how long your pipes are. If it’s only 10m, perhaps that pressure drop isn’t a big deal; but if it’s 1km long, you need to be careful. . . In the post below, on floor 17, there are the estimated figures I provided for your reference. http://bbs.hcbbs.com/thread-1183343-1-1.html
In compressor design, the flow velocity is taken into account in order to determine the diameters of the pipes at the compressor’s inlet, between stages, and at the outlet (the main pipes). Generally, the diameter of the pipe at the last stage of the compressor is predetermined by the manufacturer. What is the purpose of setting this flow rate?
Since there is a change in diameter in the pipeline downstream of the compressor, I want to check whether the flow velocities are all within the optimal range, and I also want to calculate how much the resistance will increase due to the smaller diameter of the pipeline
Take a good look at design manuals or university textbooks; it seems that you haven’t mastered the calculation of pressure drop for compressible fluids.
I like the view numbered 659174; if it’s negligible from a technical perspective, then just ignore it