Derivative of dew point temperature calculation for moist air.
function der_TDewPoi_pW_amb extends Modelica.Icons.Function; input Modelica.Units.SI.Pressure p_w "Water vapor partial pressure"; input Real dp_w "Differential of water vapor partial pressure"; output Real dT "Differential of dew point temperature"; end der_TDewPoi_pW_amb;
extends IDEAS.Utilities.Psychrometrics.Functions.BaseClasses.pW_TDewPoi_amb
as this gives a compile time error in OpenModelica as the input argument T
cannot be found.