Pipeline flow velocity in urban gas distribution networks
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Seeking advice: What is generally a good flow rate of gas in urban gas pipelines? This post was last edited by leefun on 2009-4-13 at 15:49.]
You can check the process pipeline installation design manual; different flow rates are selected for pipes of various diameters and under different pressures. Generally, for pipes at atmospheric pressure, a flow rate of 10–20 m/s is used, while for pressurized pipes, it is 15–30 m/s. Additionally, the allowable pressure drop must also be taken into account. This post was last edited by psw1420 on 2009-4-10 08:14]
Thank you, but I don’t have enough money. Is there a free manual for the installation and design of process pipelines?
The flow velocity varies depending on the pressure; generally, 15–30 m/s is chosen
The flow rate is closely related to the conveying pressure, the allowable pressure drop, and the pipe diameter. Based on my experience, for pipes with a pressure of 0.2 MPa or higher, or with a diameter of DN300 or larger, I use a flow rate of 25 meters per second; for pipes with a pressure of less than 0.2 MPa, or with a diameter of DN100 or smaller, I use 15 meters per second. For low-pressure piping systems, or pipes with a diameter of DN25 or smaller, I use 10 meters per second
External: http://www.bibidu.com/fileview-1175619.html
It’s best to check the relevant design specifications
Gas 10-20, Liquid 2-3
For city gas systems, significant pressure drops are usually taken into account; the flow velocity is generally very low, at 5–10 meters per second, in medium and low pressure systems. In particular, for PE pipes, the flow velocity should not exceed 10 meters per second, as otherwise static electricity is generated in large amounts