Contact US

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

I'm looking for wilson model parameters.

I'm looking for wilson model parameters.

I'm looking for wilson model parameters.

I'm developing a software in which i need a database that contains wilson or other liquid activity model coefficints.
where I can get such database?

RE: I'm looking for wilson model parameters.

Contact the Dortmunder Datenbank - www.ddbst.de. There you should get the information required.

RE: I'm looking for wilson model parameters.

The best way to find these parameters is to go to the multi-volume DECHEMA data books (available at all major chemical enginering libraries).  This is a huge compilation of the world's published VLE data.  For each binary VLE pair, the vapor pressure constants are provided.  Then, the dataset is regressed against the main activity coefficient models (Van Laar, Wilson, NRTL, and UNIQUAC).  Final binary interaction parameters are shown for each model.  Also, the statistical regression results are summarised to help decide on which model best fits the data.

In using these published interaction parameters, be careful that you use the same vapor pressure model coefficients for each pure component.  Unfortunately, in the DECHEMA datbank, these coefficients may not be the same for a given pure component across different binary mixtures.  In such a case, you have no choice but to redo the regresions yourself, using your favorite process simulator's VLE data regression package.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close