# ThermodynamicData Wrong Air Enthalpy

I'm using ThermodynamicData to do some calculation. By I found that there is a problem in the enthalpy of air.

Input:

temperature = Quantity[Range[200, 250, 10], "Kelvins"];
enthalpy = ThermodynamicData["Air", "Enthalpy", {"Temperature" -> temperature}];
ListLinePlot[Transpose[{temperature, enthalpy}]]


Output:

However, this is wrong, according to multiple sources.

Yet another source:

Someone already pointed out that the "difference" in enthalpy is the same, so it doesn't matter. But if I want to solve an engineering equation that involve finding a temperature corresponding to a certain enthalpy, then the result may be wrong. Can anyone help me solve that?

• This question seems more appropriate for tech support than stack exchange. – Jason B. Nov 16 '18 at 22:09