.ThermofluidStream.Media.XRGMedia.R1234yf_ph.dDewEntropy_dPressure

Information

This function calculates the derivative of vapor entropy of R1234yf with regard to the state variable p (absolute pressure). The non-derivative function is dewEntropy.

Restrictions

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

Interface

function dDewEntropy_dPressure
  extends Modelica.Icons.Function;
  input SaturationProperties sat "saturation properties | pressure is used for interpolation";
  input SaturationProperties der_sat "derivative of saturation properties";
  output Real dsvdp "derivative of vapor specific entropy in two-phase region w.r.t pressure";
end dDewEntropy_dPressure;