ISO 20765-2:2015 Preview
Natural gas -- Calculation of thermodynamic properties -- Part 2: Single-phase properties (gas, liquid, and dense fluid) for extended ranges of application
ISO 20765-2:2015 specifies a method to calculate volumetric and caloric properties of natural gases, manufactured fuel gases, and similar mixtures, at conditions where the mixture may be in either the homogeneous (single-phase) gas state, the homogeneous liquid state, or the homogeneous supercritical (dense-fluid) state.
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