Equation of State for the Real Gas:
\rho(p, T) = \frac{1}{Z} \cdot \frac{M}{R} \cdot \frac{p}{T} |
where
| Gas density | Gas pressure | Gas molar mass | |||
| Compressibility factor | Gas temperature | Gas constant |
Despite the name it covers a lot of medium-density liquids as well.
The Z-factor of pure substances is usually modelled through the reduced fluid properties
:
| Reduced Temperature | Сritical temperature | ||
| Reduced Pressure | Critical pressure |
Below is the list of the most popular Real Gas EOS @models:
| Peng–Robinson-Stryjek-Vera (PRSV) EOS @model |
| Peng–Robinson (PR) EOS @model |
| Soave-Redlich-Kwong (SRK) EOS @model |
Fluid Mixtures
The Z-factor of fluid mixtures is usually modelled through the pseudo-reduced fluid properties
:
| Reduced Temperature | Pseudo-critical temperature | ||
| Reduced Pressure | Pseudo-critical pressure |
See Z-factor Correlations @model for the charts, implicit and explicit empirical correlations on fluid mixture Z-factor .
Natural Science / Physics / Thermodynamics / Thermodynamic system / Equation of State / Real Gas
[ Ideal Gas EOS @model ][ Soave-Redlich-Kwong (SRK) EOS @model ][ Peng–Robinson EOS @model ]
[ Reduced Fluid Properties ][ Pseudo-Reduced Fluid Properties ]
References |