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Engineering ToolBox > Compressed Air Pressure Drop Nomograph

Pressure drop in compressed air pipe lines - nomograph diagram

The nomograph diagram below can be used to estimate pressure drop in compressed air pipe lines:

 

Example - Pressure Drop in Compressed Air Pipeline

The pressure drop in a compressed air pipe line

• length 100 m
• air flow 500 l/s
• inside diameter 100 mm
• working pressure 9 bar gauge

can be estimated in the diagram by drawing a line from the length line through the air flow volume line to the reference line. From the point on the reference line draw a line through the pipe diameter line to the reference line. From the working pressure line draw a line through the point on the reference line to the pressure drop line.

As shown below the pressure drop can be estimated to 0.07 bar.