Derivative of vapor specific entropy in two-phase region w.r.t pressure | use setState_phX function for input
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;