Calculation of Natural Gas Phase Diagram 1

[LucianoCalloni]

I always use Hysys to calculate Natural Gas Phase Diagram using Peng Robinson property package.
I would like to know how this software caluclates this diagram. I assume that it applies Peng Robinson equation but I can´t figure how it gets the equilibrium points.
Thanks

 

[MortenA]

You have to be more clear than that - are you asking how it finds the dewpoint/bubl points - or why it chooses exactly the values that it chooses (e.g. why dosnt it use a equal P or T step)?

Best regards

Morten

 

[LucianoCalloni]

Hi MortenA, thanks for answering.
What I want to know is how it finds the dewpoint/buble points. Which equations, data and methods this software uses to calculate this diagram.
Thanks,

Regards

Luciano

 

[dcasto]

http://www.cache.org/newsletters/summer09 Binous applic of equation.pdf

see if this is clear....