Derivative of conductivity wrt. pressure at constant specific enthalpy in liquid region for given pressure and specific enthalpy
function dlambda1ph_Ph input Units.SI.AbsolutePressure p "Pressure"; input Units.SI.SpecificEnthalpy h "Specific enthalpy"; output Real dlambdaph "Derivative of conductivity wrt. pressure at constant specific enthalpy"; end dlambda1ph_Ph;