WOLFRAM SYSTEM MODELER
fres_R134aCalculation of helmholtz derivatives |
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Wolfram Language
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SystemModel["Modelica.Media.R134a.R134a_ph.fres_R134a"]
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Information
This information is part of the Modelica Standard Library maintained by the Modelica Association.
This function computes the residual helmholtz derivatives of the fundamental equation of Tillner-Roth and Baehr for R134a (1994) w.r.t. to reduced temperature (tau=T_crit/T) and reduced density (delta=rho/rho_crit). The function can be used for special properties depending just on the residual derivative parts.Syntax
f = fres_R134a(delta, tau)
Inputs (2)
| delta |
Type: Real Description: Reduced density (delta=d/dcrit) |
|---|---|
| tau |
Type: Real Description: Reduced temperature (tau=Tcrit/T) |
Outputs (1)
| f |
Type: HelmholtzDerivs Description: Helmholtz derivatives |
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