AutoEngCalc - Engineering Calculators

Gas Pipeline Sizing

Calculate optimal pipe diameters for natural gas distribution systems

Gas Pipeline Sizing Tools

Featured: AGA Flow Equation, Panhandle A, and Weymouth Equation methods

Gas Pipeline Sizing Reference

AGA Flow Equation

The AGA (American Gas Association) flow equation is widely used for calculating gas flow through pipelines:

Q = C × (Tb/Pb) × (P12 - P22)0.5 × D2.5 × (1/√f)

Where:
Q = flow rate
C = constant
Tb = base temperature
Pb = base pressure
P1, P2 = inlet and outlet pressures
D = pipe diameter
f = friction factor

Panhandle A Equation

The Panhandle A equation is an empirical relationship for turbulent flow:

Q = 435.87 × (Tb/Pb)1.0788 × (P12 - P22)0.5394 × D2.6182 × E

Where:
E = efficiency factor
Other variables same as AGA equation

Additional Resources