functiondt_ph
Density and temperature w.r.t. pressure and specific enthalpy
Extends from Modelica.Icons.Function.
Information
This function calculates the density and temperature of R134a from absolute pressure and specific enthalpy. In one-phase region the function calls the fundamental Helmholtz equation of Tillner-Roth (1994). In two-phase the density and temperature is computed from cubic splines for saturated pressure, liquid and vapor density.
Restrictions
The function cannot be inverted in a numerical way. Please use functions rho_props_ph and T_props_ph for this purpose.Inputs
| Type | Name | Default | Description |
|---|---|---|---|
| AbsolutePressure | p | Pressure | |
| SpecificEnthalpy | h | Specific enthalpy |
Outputs
| Type | Name | Default | Description |
|---|---|---|---|
| Density | d | Density | |
| Temperature | T | Temperature |