.Modelica.Media.R134a.R134a_ph.dDewEnthalpy_dPressure_der_sat

Information

This function calculates the time derivative of vapor enthalpy of R134a with regard to the time derivative of p. The non-derivative function is dewEnthalpy.

Restrictions

It is only valid in the two-phase region (i.e., p_triple ≤ p ≤ p_crit ).

Interface

function dDewEnthalpy_dPressure_der_sat
  extends Modelica.Icons.Function;
  input SaturationProperties sat "Saturation properties | pressure is used for interpolation";
  input SaturationProperties der_sat "Derivative of saturation properties";
  output Real der_dhvdp "Derivative of vapor specific enthalpy in two-phase region w.r.t pressure";
end dDewEnthalpy_dPressure_der_sat;