WOLFRAM SYSTEM MODELER

dDewEntropy_dPressure_der_sat

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

Wolfram Language

In[1]:=
SystemModel["Modelica.Media.R134a.R134a_ph.dDewEntropy_dPressure_der_sat"]
Out[1]:=

Information

This information is part of the Modelica Standard Library maintained by the Modelica Association.

This function calculates the time derivative of vapor specific entropy of R134a with regard to the time derivative of p. The non-derivative function is dewEntropy.

Restrictions

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

Syntax

der_dsvdp = dDewEntropy_dPressure_der_sat(sat, der_sat)

Inputs (2)

sat

Type: SaturationProperties

Description: Saturation properties | pressure is used for interpolation
der_sat

Type: SaturationProperties

Description: Derivative of saturation properties

Outputs (1)

der_dsvdp

Type: Real

Description: Derivative of vapor specific entropy in two-phase region w.r.t. pressure