What parameter is S025E in Aspen?
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What parameter is S025E in Aspen? Press F1 to find out what \"sum of element entropies at 25 degrees\" means If it’s not in the database, how can it be estimated? Can the corresponding parameter values be found online? My situation is as follows: the program requires the S025E version of COS (sulfur dioxide), but it’s not available in the library. So I estimated all the missing parameters using estimation methods. However, when running the program, I got the error message “STRUCTURE FOR COMPONENT COS HAS NOT BEEN DEFINED. PCES CANNOT USE GROUP-CONTRIBUTION METHODS TO ESTIMATE MISSING PROPERTIES; USE THE STRUCTURES PARAGRAPH TO DEFINE STRUCTURES OF THIS COMPONENT.” What should I do? Please, experts, help me!
The structure for the component COS has not been defined. The group contribution method is being used; the client needs to provide the group information