Aspen stream enthalpy calculation basis and settings
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As the title suggests, it’s an old question; I’m seeking explanations from those who are more knowledgeable.
It is understood that in Aspen Plus, the reference values for enthalpy calculations are 298.15 K and 1 atm. But please still use this calculated value and compare it with the value in the manual to be more certain. I once tried to make a comparison as well, but it seemed impossible to get them to match.
For elements, the enthalpy is 0; for compounds, it is the enthalpy of formation. How can this baseline be changed so that the enthalpy value appears as a positive number, in line with everyone’s* convention?