LNG Gross Calorific Value - ISO 6976
Mass-based gross calorific value (HHV) of an LNG cargo from gas-chromatograph composition per ISO 6976:2016 - the reference method for invoice energy on LNG bills of lading.
GCV (molar)
947.23kJ/mol
Mean molar mass
17.365g/mol
GCV (mass)
54,548kJ/kg
Formula, assumptions, and limits
ISO 6976 reference conditions 288.15 K / 101.325 kPa. Typical LNG GCV 53–55 MJ/kg; invoice energy E = mass · GCV. Combine with Klosek density for volumetric GCV (MJ/m³).
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| Mole fraction of component | mol/mol | GC analysis | |
| Molar GCV of pure component | kJ/mol | ISO 6976 Annex A | |
| Molar mass of component | g/mol | IUPAC |