AGA8 Gas Flow Calculator

Gas Composition

Methane Methane (CH₄)

Ethane Ethane (C₂H₆)

Propane Propane (C₃H₈)

Isobutane Isobutane (i-C₄H₁₀)

n-Butane n-Butane (n-C₄H₁₀)

Isopentane Isopentane (i-C₅H₁₂)

n-Pentane n-Pentane (n-C₅H₁₂)

n-Hexane n-Hexane (n-C₆H₁₄)

n-Heptane n-Heptane (n-C₇H₁₆)

n-Octane n-Octane (n-C₈H₁₈)

n-Nonane n-Nonane (n-C₉H₂₀)

n-Decane n-Decane (n-C₁₀H₂₂)

Helium Helium (He)

Argon Argon (Ar)

Nitrogen Nitrogen (N₂)

Oxygen Oxygen (O₂)

Carbon Monoxide Carbon Monoxide (CO)

Carbon Dioxide Carbon Dioxide (CO₂)

Hydrogen Hydrogen (H₂)

Water Water (H₂O)

Hydrogen Sulfide Hydrogen Sulfide (H₂S)

Sum of Components

Sum Components: Sum of all component mole fractions

Pipeline Parameters

Tb (°C)Base temperature

Pb (barA)Base pressure

EPipeline efficiency, less than 1

T (°C)Gas temperature

H1 (m)Upstream elevation

H2 (m)Downstream elevation

L (km)Pipe segment length

D (mm)Pipe diameter

P1 (barg)Upstream pressure

P2 (barg)Downstream pressure

Gas Properties

Molar density: Molar density (mol/m³)

Relative Density: Air-relative molecular weight (air ≈ 28.9647 g/mol)

Mass Density: Mass density (kg/m³)

Base Density: Standard condition density (kg·m⁻³) (@ 20 °C, 101.325 kPa)

Z-Factor: Calculated compressibility factor

Flow Results (Panhandle B)

Q (m³/s) Standard cubic meters per second

Q (10³ m³/h) Thousand cubic meters per hour

Q (10⁶ m³/d) Million cubic meters per day

v₁ (m/s) Gas speed at pipeline start

v₂ (m/s) Gas speed at pipeline end

Pavg (barg) Average pressure in the pipeline

Volume (10³ m³) Gas volume Thousand cubic meters

Pressure Range Analysis

P1 Min (barg) Minimum inlet pressure

P1 Max (barg) Maximum inlet pressure

P2 Min (barg) Minimum outlet pressure

P2 Max (barg) Maximum outlet pressure

Step (bar) Step size for pressure tables

Flow Rates (MSm³/d)

P1\P2

Gas Volumes (MSm³)

P1\P2