Test#2

[ GERG-2008 Thermodynamic Properties Calculator ]

Gas Composition (Mole Fraction)

Methane (C₁):

Nitrogen (N₂):

Carbon Dioxide (CO₂):

Ethane (C₂):

Propane (C₃):

Isobutane (iC₄):

n-Butane (nC₄):

Isopentane (iC₅):

n-Pentane (nC₅):

Hexane (C₆):

Heptane (C₇):

Octane (C₈):

Nonane (C₉):

Decane (C₁₀):

Hydrogen (H₂):

Oxygen (O₂):

Carbon Monoxide (CO):

Water (H₂O):

Hydrogen Sulfide (H₂S):

Helium (He):

Argon (Ar):

Total Mole Fraction: 1.0000

Process Conditions

Pressure (kPa):

Temperature (K):

Calculated Properties

Molar Mass

g/mol

Molar Density

mol/L

Compressibility Factor (Z)

d(P)/d(ρ)

kPa/(mol/L)

d²(P)/d(ρ)²

kPa/(mol/L)²

d(P)/d(T)

kPa/K

Internal Energy

J/mol

Enthalpy

J/mol

Entropy

J/(mol·K)

Cv (Isochoric)

J/(mol·K)

Cp (Isobaric)

J/(mol·K)

Speed of Sound

m/s

Gibbs Energy

J/mol

Joule-Thomson Coeff.

K/kPa

Isentropic Exponent

Pressure (Calculated)

kPa

[ Grid Export Tool ]

Grid Parameters

Min Pressure (kPa):

Max Pressure (kPa):

Pressure Steps:

Min Temperature (K):

Max Temperature (K):

Temperature Steps:

Property to Export:

Grid Size: 100 calculations

Uses the composition from the section above

About GERG-2008

The GERG-2008 equation of state is a high-accuracy multiparameter reference equation developed by the Groupe Européen de Recherches Gazières for natural gases and similar mixtures. It calculates thermodynamic properties including density, enthalpy, entropy, heat capacities, and speed of sound.

This implementation uses the Rust port of NIST's AGA8 code, compiled to WebAssembly for near-native performance directly in your browser. All calculations are performed client-side.

Note: Composition values must be in mole fractions and sum to exactly 1.0. Pressure is in kilopascals (kPa) and temperature in Kelvin (K).

Grid Export: The grid export tool generates a CSV file with pressure values as rows and temperature values as columns, creating a 2D grid of the selected property. The composition used is taken from the main calculator section above.

About GERG-2008