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and also a specific range of

LaTeX Math Inline
body--uriencoded--0.7 < T_%7Bpr%7D \leq 1.0
 and
LaTeX Math Inline
body--uriencoded--P_%7Bpr%7D < 1.0
:



LaTeX Math Block
anchorz
alignmentleft
Z = \frac{0.27 \, P_{pr}}{y \, T_{pr}}
LaTeX Math Block
anchory
alignmentleft
1 + T_1 \, y  +T_2 \, y^2 + T_3 \, y^5 + T_4 \, y^2 \, (1+ A_8 \, y^2) \cdot \exp \left( - A_8 \, y^2  \right)  - \frac{T_5}{y} = 0




LaTeX Math Block
anchorA
alignmentleft
T_1 = A_1 + \frac{A_2 }{ T_{pr} } + \frac{A_3 }{ T_{pr}^3 }
LaTeX Math Block
anchorB
alignmentleft
T_2 = A_4 + \frac{A_5 }{ T_{pr} }




LaTeX Math Block
anchorD
alignmentleft
T_3 = \frac{A_5 \, A_6 }{T_{pr}}
LaTeX Math Block
anchorE
alignmentleft
T_4 = \frac{A_7 }{T_{pr}^3}




LaTeX Math Block
anchorE
alignmentleft
T_5 = \frac{0.27 \, P_{pr} }{T_{pr}}






where

LaTeX Math Inline
bodyZ

Z-factor

LaTeX Math Inline
bodyT

fluid temperature 

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

pseudo-reduced temperature 
(or reduced temperature 

LaTeX Math Inline
body--uriencoded--T_%7Br%7D
 in case of pure substances)

LaTeX Math Inline
body--uriencoded--T_%7Bpc%7D

 pseudo-critical temperature 
(or critical temperature 

LaTeX Math Inline
body--uriencoded--T_%7Bc%7D
 in case of pure substances)

LaTeX Math Inline
bodyP

fluid pressure

LaTeX Math Inline
body--uriencoded--P_%7Bpr%7D = P/P_%7Bpc%7D

pseudo-reduced pressure 
(or reduced pressure 

LaTeX Math Inline
body--uriencoded--P_%7Br%7D
 in case of pure substances)

LaTeX Math Inline
body--uriencoded--P_%7Bpc%7D

 pseudo-critical pressure 
(or critical pressure 

LaTeX Math Inline
body--uriencoded--P_%7Bc%7D
 in case of pure substances)

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