3 replies to this topic

[ChinmoyBasak]

I know we can override the default global options in each unit operation in aspen plus, to have different property in a specific unit operation. 

 

But I have to use regression in two of the property package. So as far as I know we can do regression in only principal property package. But I need in total three property package and and two regressed property package in same simulation.

 

Example My needed property packages are

 

UNIFAC (Contains Polar substance) in around Reactor

CPA (Need VLE regression for separation) In separation Section 1

ENRTL (Contain Ions and need VLE & LLE regression for separation) In separation Section 2

 

My separate simulations are ready but I don't know how to have them in the same simulation file.

 

Will, really appreciate your suggestions.

Edited by ChinmoyBasak, 03 January 2021 - 06:06 PM.

[Bobby Strain]

You should consult AspenTech support. HYSYS supports different property packages in subflowsheets. Aspen plus may, too.

 

Bobby

Edited by Bobby Strain, 03 January 2021 - 01:01 PM.

[Pilesar]

Have you tried regressing the properties you need and then saving the regression coefficients? It is not usual to perform a new thermo property regression every time you run the simulation. You should only need to regress the properties once. After that, include the result in the property method.

[ChinmoyBasak]

Have you tried regressing the properties you need and then saving the regression coefficients? It is not usual to perform a new thermo property regression every time you run the simulation. You should only need to regress the properties once. After that, include the result in the property method.

Thank you sir. I will try to find ways to save the regression coefficients. I am currently not aware of the procedure. Appreciate your response.