Some components of ASPEN can’t be found; what should I do? Should I create them manually?
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I couldn’t find any of these three substances at all – none of them. What should I do in such a situation? Do I need to define them manually? If so, I need to know the properties of these substances, right?
Mm-hmm, start with estimating the physical properties; you can look at example problems using chemical calculation software. There are also many posts on forums discussing definitions and the addition of new substances, so take a look there
For customizations, it’s not necessary to know the properties of the substances; of course, the more you know, the more accurate the estimates will be