Calculation of gas pressure drop
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Today I calculated the pressure drop due to nitrogen resistance: 500 cubic liters, 6 kilograms of gas, transported through a DN50 pipe at a flow rate of around 11. After traveling 1100 meters, 3 kilograms of pressure was lost. I’m wondering if there’s an error in my calculations! I checked the parameters several times and found no issues. The chemical engineering design manual recommends a flow rate of 10-25, so my value isn’t that high either!
I also calculated it to be 3 kilograms~ It’s your pipeline that’s too long~ 1.1 kilometers long~
What is your absolute coefficient of friction?
For ordinary steel pipes with a Ra value of 0.2 mm, the pressure loss is approximately 300 Pa/m; for stainless steel pipes with a Ra value of 0.05 mm, the pressure loss is approximately 200 Pa/m
6 kgf gauge pressure, absolute roughness of 0.2 mm, pressure drop of 485 KPa
The reason has been found; it’s mainly because the pipe diameter is too small. For a 500 series pipe with a diameter of 50, and a 2000 series pipe with a diameter of 100, although the flow rate is the same, the resistance loss is much lower in the pipe with the larger diameter
This post was last edited by henglinkou on 2020-4-28 09:01. It’s a spreadsheet I created myself for trial use. https://bbs.hcbbs.com/thread-1764890-1-1.html
It’s a great software. Could you please provide me with the password to unlock cells? Thank you