lib.PRLinDuan module¶
- class lib.EoS.Cubic.PRLinDuan.PRLinDuan(T, P, mezcla, **kwargs)[source]¶
Bases:
PR78Volume translation modification for Peng-Robinson equation of state by Lin and Duan, [1], in this equation the volumen translation is temperature-dependent
\[\begin{split}\begin{array}[t]{l} P = \frac{RT}{V+c-b}-\frac{a}{(V+c)^2 + 2b\left(V+c\right) - b}\\ a = 0.45724\frac{R^2T_c^2}{P_c}\alpha\\ b = 0.0778\frac{RT_c}{P_c}\\ \alpha^{0.5} = 1 + m\left(1-Tr^{0.5}\right)\\ m = 0.37464 + 1.54226\omega - 0.26992\omega^2\\ c = c_cf\left(T_r\right)\\ c_c = \left(0.3074-Z_c\right)\frac{RT_c}{P_c}\\ f\left(T_r\right) = \beta + \left(1-\beta\right) \exp\left(\gamma\left|1-T_r\right|\right)\\ \end{array}\end{split}\]β and γ are compounds specific parameters fitted to experimental density data, if no available the paper give generalized correlation for this
\[\begin{split}\begin{array}[t]{l} \beta = -2.8431\exp\left(-64.2184(0.3074-Z_c\right) + 0.1735\\ \gamma = -99.2558 + 301.6201Z_c\\ \end{array}\end{split}\]
