PhaseBoundaryProperties
InverseDerivatives_rhoT
EOSIdealCoeff
EOSResidualCoeff
CubicSplineDerEval
CubicSplineEval
cv2Phase
FindInterval
helmholtzToBoundaryProps
Extends from Modelica.Icons.Package (Icon for standard packages).
| Name | Description |
|---|---|
| PhaseBoundaryProperties
|
Thermodynamic base properties on the phase boundary |
| InverseDerivatives_rhoT
|
Derivatives required for inversion of density and temperature functions w.r.t. pressure and enthalpy states |
| EOSIdealCoeff
|
Record for coefficients of ideal term of Helmholtz equation of state |
| EOSResidualCoeff
|
Record for coefficients of residual term of Helmholtz equation of state |
| CubicSplineDerEval
|
Derivative of cubic spline |
| CubicSplineEval
|
Cubic spline |
| cv2Phase
|
Compute isochoric specific heat capacity inside the two-phase region |
| FindInterval
|
Half-interval search algorithm |
| helmholtzToBoundaryProps
|
Calculate phase boundary property record from dimensionless Helmholtz function |
Modelica.Media.R134a.Common.PhaseBoundaryPropertiesThermodynamic base properties on the phase boundary
Extends from Modelica.Icons.Record (Icon for records).
Modelica.Media.R134a.Common.InverseDerivatives_rhoTDerivatives required for inversion of density and temperature functions w.r.t. pressure and enthalpy states
Extends from Modelica.Icons.Record (Icon for records).
Modelica.Media.R134a.Common.EOSIdealCoeffRecord for coefficients of ideal term of Helmholtz equation of state
Extends from Modelica.Icons.Record (Icon for records).
| Name | Description |
|---|---|
| nc | No. of coefficients in a |
| a[nc] | Coefficients of ideal term of Helmholtz equation of state |
Modelica.Media.R134a.Common.EOSResidualCoeffRecord for coefficients of residual term of Helmholtz equation of state
Extends from Modelica.Icons.Record (Icon for records).
| Name | Description |
|---|---|
| nc | No. of coefficients in c, d, t, n |
| ns1 | No. of zero coefficients in c |
| c[nc] | Coefficients of residual term of Helmholtz equation of state |
| d[nc] | Coefficients of residual term of Helmholtz equation of state |
| t[nc] | Coefficients of residual term of Helmholtz equation of state |
| n[nc] | Coefficients of residual term of Helmholtz equation of state |
Modelica.Media.R134a.Common.CubicSplineDerEvalDerivative of cubic spline
Extends from Modelica.Icons.Function (Icon for functions).
| Name | Description |
|---|---|
| x | Input |
| coefs[4] | Spline coefficients |
| Name | Description |
|---|---|
| yder | Spline derivative |
Modelica.Media.R134a.Common.CubicSplineEvalCubic spline
Extends from Modelica.Icons.Function (Icon for functions).
| Name | Description |
|---|---|
| x | Input |
| coefs[4] | Spline coefficients |
| Name | Description |
|---|---|
| y | Output |
Modelica.Media.R134a.Common.cv2PhaseCompute isochoric specific heat capacity inside the two-phase region
Extends from Modelica.Icons.Function (Icon for functions).
| Name | Description |
|---|---|
| liq | Properties on the boiling curve |
| vap | Properties on the condensation curve |
| x | Vapour mass fraction [1] |
| T | Temperature [K] |
| p | Pressure [Pa] |
| Name | Description |
|---|---|
| cv | Isochoric specific heat capacity [J/(kg.K)] |
| dpT | Derivative of pressure w.r.t. temperature |
Modelica.Media.R134a.Common.FindIntervalHalf-interval search algorithm
Extends from Modelica.Icons.Function (Icon for functions).
| Name | Description |
|---|---|
| x | Input |
| breaks[:] | Grid points defining the intervals |
| Name | Description |
|---|---|
| i | Found interval number |
| error | 1=did not find interval |
Modelica.Media.R134a.Common.helmholtzToBoundaryPropsCalculate phase boundary property record from dimensionless Helmholtz function
Extends from Modelica.Icons.Function (Icon for functions).
| Name | Description |
|---|---|
| f | Dimensionless derivatives of Helmholtz function |
| Name | Description |
|---|---|
| sat | Phase boundary property record |