Equation of State for the Real Gas:
(1) | \rho(p, T) = \frac{1}{Z} \cdot \frac{M}{R} \cdot \frac{p}{T} |
where
\rho | Gas density | p | Gas pressure | M | Gas molar mass |
Z | Compressibility factor | T | Gas temperature | R | Gas constant |
Despite the name it covers a lot of medium-density liquids as well.
The Compressibility factor
Z(p, T) pressure-temperature dependence is usually modelled through the reduced properties
Z(T_r, p_r), where:
T_r = T/T_c | Reduced Temperature | T_c | Сritical temperature |
p_r = p/p_c | Reduced Pressure | p_c | Critical pressure |
Below is the list of the most popular correlations for Compressibility factor
Z(T_r, p_r):
See also
Natural Science / Physics / Thermodynamics / Equation of State
[ Real Gas ]
[ Ideal Gas EOS @model ][ Soave-Redlich-Kwong (SRK) EOS @model ][ Peng–Robinson EOS @model ]