4 replies to this topic

[speakas]

Hi,

 

I am completing a project currently and require saturation properties of cyclohexane.

 

I thought of acquiring it from aspen Plus or if possible through HYSYS. 

 

However, I am not familiar with the aspen Plus interface and would appreciate if someone could give me a walkthrough of how I can get saturation properties. 

 

In particular, I only require viscosity and thermal conductivity of the hydrocarbon at both liquid and vapour phase across the saturation temperature-pressure, as these properties seem to be missing from NIST webbook. 

 

Thanks

Edited by speakas, 22 May 2017 - 12:14 PM.

[Saml]

Check this one

 

http://www.just.edu....amic Models.pdf

 

Then look in google for "Aspen Physical Property System" where you will have a very detailed document.

 

And get a comfortable chair to read it :-)

 

Or if you just want the properties withouth asking where they come from, go to Propertie Sets, make a new one named "myset" or whatever you want, and add viscosity (I think is MUMX) and thermal conductivity. Then on the Report options set the stream to report this dataset.

 

For a good walkthrough, try to get a copy of "Aspen Plus: Chemical Engineering Applications".

[serra]

which NIST application ?

with NIST (REFPROP) you can easily generate tables with saturation points (see attached image),

by the way, the same with the free version COOLPROP,

or PRODE PROPERTIES (which generates tables in Excel)  etc. etc.

but probably you can calculate those values with any simulator...

Attached Files

•  SaturationPoints.bmp   773.77KB   11 downloads

[speakas]

which NIST application ?

with NIST (REFPROP) you can easily generate tables with saturation points (see attached image),

by the way, the same with the free version COOLPROP,

or PRODE PROPERTIES (which generates tables in Excel)  etc. etc.

but probably you can calculate those values with any simulator...

 

I was initially using NIST webbook, it did not have viscosity and thermal conductivity included for cyclohexane.

 

I gave COOLPROP a go, it did have viscosity, but did not have thermal conductivity. 

 

 

 

Check this one

 

http://www.just.edu....amic Models.pdf

 

Then look in google for "Aspen Physical Property System" where you will have a very detailed document.

 

And get a comfortable chair to read it :-)

 

Or if you just want the properties withouth asking where they come from, go to Propertie Sets, make a new one named "myset" or whatever you want, and add viscosity (I think is MUMX) and thermal conductivity. Then on the Report options set the stream to report this dataset.

 

For a good walkthrough, try to get a copy of "Aspen Plus: Chemical Engineering Applications".

 

I am going through Aspen Plus. I am finding it difficult to find this report option. The user interface I dont find as intuitive as HYSYS. 

[serra]

the free online NIST Chemistry WebBook is based on REFPROP version 7 (see the note on output),

 

REFPROP 9.1 (last version) includes cyclohexane see the table in my previous post calculated with REFPROP 9.1,

 

for pure fluids most simulators include temperature dependent correlations,

these can include 3 .. 5 parameters , accuracy is lower but acceptable in most cases,

see DIPPR or similar compilations,

you can easily put these parameters in Excel and plot curves...

 

some software (Prode Properties for example) gives both features,

 

there are many alternatives if you are looking for...