Air enthalpy entropy diagram
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I found several physical property diagrams of air in the information, including air TS diagram, air IT diagram, and air IS diagram. I would like to ask why there is no air HS diagram. Is it because air has no enthalpy?
The enthalpy value is used when a phase change occurs. If no phase change occurs, the specific heat capacity is sufficient. Air is only in the gaseous state.
We are already in the 5G era, so we don’t need to look at the temperature entropy chart anymore, right? The error in the temperature entropy diagram is too large. It would be nice to calculate it directly. Enthalpy and entropy are both state functions, and their absolute values are meaningless. Depending on the selected reference point, the enthalpy and entropy values will be different. Enthalpy changes and entropy changes are what make sense.
Do you have any recommendations for good calculation software?
Chemical engineering calculation APP, learn about it