WOLFRAM SYSTEM MODELER

setState_psX

Set state for pressure and specific entropy (X not used since single substance)

Wolfram Language

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

Information

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

This function may be used in order to calculate the thermodynamic state record used as input by many functions. It will calculate the missing states:

  • density
  • pressure
  • specific enthalpy

Example: 

parameter Medium.AbsolutePressure p = 3e5;
parameter Medium.SpecificEntropy s = 1.7e3;

Medium.SpecificEnthalpy h;

equation

h = Medium.specificEnthalpy(setState_psX(p, s, fill(0, Medium.nX)));

Syntax

state = setState_psX(p, s, X, phase)

Inputs (4)

p

Type: AbsolutePressure (Pa)

Description: Pressure
s

Type: SpecificEntropy (J/(kg⋅K))

Description: Specific entropy
X

Default Value: reference_X

Type: MassFraction[:] (kg/kg)

Description: Mass fractions
phase

Default Value: 0

Type: FixedPhase

Description: 2 for two-phase, 1 for one-phase, 0 if not known

Outputs (1)

state

Type: ThermodynamicState

Description: Thermodynamic state record

Revisions

2020-02-05 Stefan Wischhusen: Added missing property calculation for d and T.