.Modelica.Media.R134a.R134a_ph.dBubbleEntropy_dPressure

Information

This function calculates the derivative of liquid entropy of R134a with regard to the state variable p (absolute pressure). The non-derivative function is bubbleEntropy.

Restrictions

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

Interface

function dBubbleEntropy_dPressure
  extends Modelica.Icons.Function;
  input SaturationProperties sat "Saturation properties | pressure is used for interpolation";
  output Real dsldp "Derivative of liquid specific entropy in two-phase region w.r.t pressure";
end dBubbleEntropy_dPressure;