Specify an ambient temperature for the PPDX data

For some of the thermodynamic equations in a PPDX file, there is not an exact match between the IK-CAPE equation and the equation implemented in AVEVA Process Simulation. For example, IK-CAPE allows the Wilson parameters to be temperature-dependent, whereas AVEVA Process Simulation allows only constant parameters. To resolve this, the PPDXImport conversion tool evaluates the terms that AVEVA Process Simulation does not support at an ambient temperature and then uses that value for the constant term. The report (.rpt) file created by the PPDXImport conversion tool notes where this is done.

By default, the PPDXImport conversion tool uses an ambient temperature of 25°C (298.15 K). If this is not appropriate for your process, you can supply your own ambient temperature by using a private AMBIENT block in the .ikc file that you import.

Specify an ambient temperature for the PPDX data

1. Open the .ikc file in a text editor, such as Notepad or Notepad++.

2. Ensure that your .ikc file includes the following lines of code. If any lines are missing, add them.

   VERSION IKC-PPDX 1.7

   PRIVATE

   BLOCKS AMBIENT

   END PRIVATE

   AMBIENT

   TEMPERATURE 60 F

   END AMBIENT

   ...

   ...

3. In the AMBIENT block, at the TEMPERATURE parameter, change the value and unit of measure to meet your requirements.

4. Save the .ikc file.