How should one understand negative enthalpy values in HYSYS calculations?

2020-05-29View Original

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Dear HYSYS experts, I have a question: How should we understand negative enthalpy values in HYSYS calculations? According to chemical thermodynamics, the definition of enthalpy is as follows: a reference state is first selected, and the enthalpy value is equal to the value at that reference state plus the enthalpy change associated with the process from the reference state to the given state. Questions: 1. How is the reference state determined in HYSYS calculations? 2. Does a negative enthalpy value indicate heat release? Thank you.

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How should one understand negative enthalpy values in HYSYS calculations?

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