Page History

Z = \frac{A_10.27 \, P_{pr}}{y \, T_{pr}}

-A_1R_5 \, y^2 \, (1+ PA_{pr11} + \frac{y+y^2+y^3-y^4}{(1-y)^3} \, y^2) \cdot \exp \left( - A_2{11} \, y^2  \right)
+ AR_31 \, y^{\, A_4}y - \frac{R_2}{y} +R_3 \, y^2 - R_4 \, y^5  +1 = 0

R_1 = A_1 = 0.06125+ A_2 \cdot, t \cdot+ A_3 \, t^3 + A_4 \exp, \left[ -1.2 (1-t)^2 \right]t^4 + A_5 \, t^5

AR_2 = 14.76\frac{0.27 \, P_{pr}}{T_{pr}}

AR_34 = 90.7A_9 \, t -242.2( A_7 \, t^2t + 42.4A_8 \, t^3t^2) 

AR_45 = 2.18 + 2.82 A_10 \, t t^3