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Peng-Robinson EoS

calculate the compressibility factor


Last Week downloads: 0
Total downloads: 306
  • Last Updated: Jun 24, 2010
  • License: Freeware Free
  • OS: Windows /Linux/Mac OS/BSD/Solaris
  • Requirements: Matlab 6.5 (R13)

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For Peng-Robinson EoS Publisher's description


Peng-Robinson EoS is a Scripts software developed by Juan Garcia Serna. After our trial and test, the software is proved to be official, secure and free. Here is the official description for Peng-Robinson EoS:

Edit by Brothersoft: This function allows calculating the compressibility Factor, the fugacity coefficient and Density of a Pure compound for both liquid and vapour phases by means of the Peng-Robinson Equation of state (PR EOS). Temperature, pressure, molar weigth, and supercritical properties of the selected compound are needed to be specified as parameters.

It is a Beta version, full version will include multicomponent systems and other equations of state.

function [Z,fhi,density] = PengRobinson(T,P,Tc,Pc,w,MW,Liquido)
Parameters: T,P,w,Tc,Pc,w,MW,Liquido
T: Temperature [=]K
P: Presure [=] Pa
Tc: critical temperature [=] K
Pc: critical presure [=] Pa
w: accentic factor
MW: molar weigth [=] kg /mol
Liquido: if Liquido = 1, liquid fugacity;
if Liquido = 0 Vapor fugacity
[Z fhi density] = PengRobinson(273,2*1.013*1e5,304.21,7.382*1e6,0.225,0.044,1)

This MATLAB function provides an educational tool to predict fluid phase equilibrium and can be easily extended to a multicomponent system.
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