Specification
NGA Extension calculates gas properties in compliance with norms:
Natural Gas
Natural gas - Calculation of calorific values, density, relative density and Wobbe index from composition.
Standard Practice for Calculating Heat Value, Compressibility Factor, and Relative Density of Gaseous Fuels.
Calculation of Gross Heating Value, Relative Density and Compressibility Factor for Natural Gas Mixtures From Compositional Analysis.
Liquefied Petroleum Gas
Standard Practice for Interconversion of Analysis of C5 and Lighter Hydrocarbons to Gas-Volume, Liquid-Volume, or Weight Basis.
Standard Practice for Calculation of Certain Physical Properties of Liquefied Petroleum (LP) Gases from Compositional Analysis.
Liquefied petroleum gases - Calculation method for density and vapor pressure
Calculated properties according to norms
ISO 6976-95
- Compression Factor (for real gas only)
- Mean Molecular Weight
- Relative Density
- Density
- Superior Calorific Value
- Inferior Calorific Value
- Wobbe Index
ASTM D 3588-98 and GPA 2172-09
- Molar Mass
- Molar Mass Ratio
- Compressibility Factor
- Relative Density
- Ideal Heating Value (incl.calculations in BTU - British Thermal Units)
- Real Heating Value (incl.calculations in BTU - British Thermal Units)
ASTM ASTM D 2421-02 and D 2598-02
- Vapor Pressure
- Relative Density
- Motor Octane Number
- Methane Number
ISO 8973-97 / EN589-04
- Absolute Vapour Pressure (for Molar and Mass Percent only)
- Gauge Vapour Pressure (for Molar and Mass Percent only)
- Octane Number
- Methane Number