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AVEVA™ Process Simulation

Thermodynamic libraries

  • Last UpdatedJul 08, 2025
  • 1 minute read

Thermodynamic libraries contain all the thermodynamic data and coefficients that AVEVA Process Simulation needs to calculate thermodynamic properties.

There are two types of thermodynamic libraries:

  • Default Libraries: Currently there is only one standard thermodynamic library.

  • Custom Libraries: These are thermodynamic libraries based on the default library in which a user has changed the thermodynamic data and coefficients to meet their process needs.

The thermodynamic libraries exist as .lb1 files in the %userprofile%\My Thermo Data folder. To use a custom library in AVEVA Process Simulation, you must add it to this folder or create a new a sub-folder with a custom name under My Thermo Data and then add the files there. You can create and manage custom libraries by using the AVEVA Thermodynamic Data Manager software, which comes along with the AVEVA Process Simulation software.

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