https://reference.wolfram.com/system-modeler/libraries/Modelica/Modelica.Media.R134a.R134a_ph.dBubbleEntropy_dPressure_der_sat.html
Modelica: Media.R134a.R134a_ph.dBubbleEntropy_dPressure_der_sat - System Modeler Documentation
Time derivative of liquid specific entropy in two-phase region w.r.t. pressure | use setState_phX function for input
system modelermodelicamediaph