functionfid_R134a
Helmholtz coefficients of ideal part
Extends from Modelica.Icons.Function.
Information
This function computes the ideal gas 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).Inputs
| Type | Name | Default | Description |
|---|---|---|---|
| Real | delta | reduced density (delta=d/dcrit) | |
| Real | tau | reduced temperature (tau=Tcrit/T) |
Outputs
| Type | Name | Default | Description |
|---|---|---|---|
| Common.HelmholtzDerivs | fid | helmholtz derivatives of ideal part |