WOLFRAM SYSTEM MODELER

s_pTX

Return specific entropy of moist air as a function of pressure p, temperature T and composition X (only valid for phi<1)

Wolfram Language

In[1]:=
SystemModel["Modelica.Media.Air.MoistAir.s_pTX"]
Out[1]:=

Information

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

Specific entropy of moist air is computed from pressure, temperature and composition with X[1] as the total water mass fraction.

Syntax

s = s_pTX(p, T, X)

Inputs (3)

p

Type: Pressure (Pa)

Description: Pressure
T

Type: Temperature (K)

Description: Temperature
X

Type: MassFraction[:]

Description: Mass fractions of moist air

Outputs (1)

s

Type: SpecificEntropy (J/(kg⋅K))

Description: Specific entropy at p, T, X

Revisions

2012-01-12 Stefan Wischhusen: Initial Release.

2019-05-14 Stefan Wischhusen: Corrected calculation.

2019-09-10 Stefan Wischhusen: Corrected pressure influence (p < p_ref).