Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

mobile - visible on handheld devices - alternatively go to www.engineeringtoolbox.com!

Engineering ToolBox > Compressed Air Pipelines - Online Pressure Drop Calculator

Calculate pressure drop in compressed air pipe lines - online calculator and spreadsheet for download - metric and imperial units

The pressure drop in compressed air lines can be calculated by using the formula

dp = 7.57 q^1.85 L 10⁴ / d⁵ p (1)

where

dp = pressure drop (kg/cm²)

q = air volume flow (m³/min)

L = length of pipe (m)

d = inside diameter of pipe (mm)

p = initial pressure (kg/cm²)

Online Compressed Air Pipeline Pressure Drop Calculator - Metric Units

The calculator below can used to calculate the pressure drop in compressed air pipelines.

q - air volume flow (m³/min)

L - pipe length (m)

d - inside diameter pipe (mm)

p - initial pressure (kg/cm²)

Online Compressed Air Pipeline Pressure Drop Calculator - Imperial Units

The calculator below can used to calculate the pressure drop in compressed air pipelines.

q - air volume flow (cfm)

L - pipe length (feet)

d - inside diameter pipe (inches)

p - initial pressure (psi)

Compressed Air Pipeline Pressure Drop Spreadsheet

Calculations can be done for other pressures and/or pipe lengths by using this excel spreadsheet.

• Compressed Air Pipeline Pressure Drop Diagrams

Compressed Air Pipeline Pressure Drop Table - Initial Pressure 7 kg/cm² (100 psi)

Pressure drops in 100 m (330 ft) compressed air  schedule 40 steel pipe lines are indicated in the tables below: