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LaTeX Math Inline
bodyT_r = T/T_c

Reduced Temperature

LaTeX Math Inline
bodyT_c

Сritical temperature

LaTeX Math Inline
bodyp_r = p/p_c

Reduced Pressure

LaTeX Math Inline
bodyp_c

 Critical pressure



The Z-factor

LaTeX Math Inline
bodyZ(p, T)
 of fluid mixtures is usually modelled through the pseudo-reduced fluid properties
LaTeX Math Inline
body--uriencoded--(T_%7Bpr%7D, p_%7Bpr%7D)
: 

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LaTeX Math Inline
body--uriencoded--T_%7Bpr%7D = T/T_%7Bpc%7D

Reduced Temperature

LaTeX Math Inline
body--uriencoded--T_

c

%7Bpc%7D

Сritical
Pseudo-critical temperature

LaTeX Math Inline
body--uriencoded--p_%7Bpr%7D = p/p_%7Bpc%7D

Reduced Pressure

LaTeX Math Inline
body

p_c Critical pressure

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--uriencoded--

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p_

...

%7Bpc%7D

Pseudo-critical pressure

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Below is the list of the most popular correlations for Compressibility factor 

LaTeX Math Inline
bodyZ(T_r, p_r)
:popular Real Gas EOS @models: 

Peng–Robinson-Stryjek-Vera (PRSV) EOS @model
Peng–Robinson (PR) EOS @model
Soave-Redlich-Kwong (SRK) EOS @model 

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