1 reply to this topic

[brunette1216]

Hi there!

 

I am trying to get a program working for a class project in Aspen. I manually drew in my starch molecule and used the calculate bonds option to get all of the properties for the molecule but then when I go to run my simulation I keep getting this error:

 

VAPOR PRESSURE MODEL PL0XANT HAS MISSING PARAMETERS:

      PLXANT/1ST ELEMENT (DATA SET 1) MISSING FOR COMPONENT STARCH

 

  ****PROPERTY PARAMETER ERROR

      ERRORS ENCOUNTERED IN CALCULATION OF VAPOR-LIQUID K-VALUES USING

      OPTION SET IDEAL FOR KVL.

 

 

And then it stops calculating. How do I fix this????

 

Thank you!

[Chin]

The starch molecule is modeled as a conventional (non-solid) component and the Antoine vapor pressure coefficients are missing. If you must model starch as a conventional component, you can specify the first Antoine parameter to be a negligibly small number.