Why is the design pressure of the gas pipeline 9.2 MPa instead of 10 MPa?
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I just read a paper and suddenly wondered why the design pressure for the gas pipeline is 9.2 MPa instead of 10 MPa? As shown in the figure
Use Aspen to find out what the pressure of natural gas is at 40–50°C
Use the Aspen software to simulate and determine what the saturated vapor pressure is at 50°C
This must have been determined through simulation calculations; it certainly wasn’t decided arbitrarily
It should be calculated based on factors such as conveying length, temperature, flow rate, and pressure drop due to pipe losses
Material selection, construction, etc. can be downgraded to save a significant amount of investment
10.0 MPa. The pipeline grade has been upgraded by one level
For the same reason as many high-rise buildings are designed to be 100 meters tall