This package is a template for new refrigerant models using a hybrid approach based on the "Fast_Propane" model developed by Sangi et al. (for detailed information, please checkout AixLib.Media.Refrigerants.Interfaces.PartialHybridTwoPhaseMediumFormula ). For a new refrigerant model just make a copy of this package, remove the "partial" keyword from the package and provide the information that is requested in the comments of the Modelica code. The following information is requested:
A refrigerant package inherits from PartialHybridTwoPhaseMediumFormula and provides the equations for the refrigerant. Moreover, the PartialHybridTwoPhaseMedium package inherits from PartialMedium and, therefore, the details of this package are described in Modelica.Media.UsersGuide .
Sangi, Roozbeh; Jahangiri, Pooyan; Klasing, Freerk; Streblow, Rita; Müller, Dirk (2014): A Medium Model for the Refrigerant Propane for Fast and Accurate Dynamic Simulations. In: The 10th International Modelica Conference. Lund, Sweden, March 10-12, 2014: Linköping University Electronic Press (Linköping Electronic Conference Proceedings), S. 1271–1275
| Name | Description |
|---|---|
| SmoothTransition | Record that contains ranges to calculate a smooth transition between different regions |
| f_Idg | Dimensionless Helmholtz energy (Ideal gas contribution f_Idg) |
| f_Res | Dimensionless Helmholtz energy (Residual part alpha_r) |
| t_fIdg_t | Short form for tau*(dalpha_0/dtau)_delta=const |
| tt_fIdg_tt | Short form for tau*tau*(ddalpha_0/(dtau*dtau))_delta=const |
| t_fRes_t | Short form for tau*(dalpha_r/dtau)_delta=const |
| tt_fRes_tt | Short form for tau*tau*(ddalpha_r/(dtau*dtau))_delta=const |
| d_fRes_d | Short form for delta*(dalpha_r/(ddelta))_tau=const |
| dd_fRes_dd | Short form for delta*delta(ddalpha_r/(ddelta*delta))_tau=const |
| td_fRes_td | Short form for tau*delta*(ddalpha_r/(dtau*ddelta)) |
| ttt_fIdg_ttt | Short form for tau*tau*tau*(dddalpha_0/(dtau*dtau*dtau))_delta=const |
| ttt_fRes_ttt | Short form for tau*tau*tau*(dddalpha_r/(dtau*dtau*dtau))_delta=const |
| ddd_fRes_ddd | Short form for delta*delta*delta* (dddalpha_r/(ddelta*ddelta*ddelta))_tau=const |
| tdd_fRes_tdd | Short form for tau*delta*delta*(dddalpha_r/(dtau*ddelta*ddelta)) |
| ttd_fRes_ttd | Short form for tau*tau*delta*(dddalpha_r/(dtau*dtau*ddelta)) |
| saturationPressure | Saturation pressure of refrigerant (Ancillary equation) |
| saturationTemperature | Saturation temperature of refrigerant (Ancillary equation) |
| bubbleDensity | Boiling curve specific density of refrigerant (Ancillary equation) |
| dewDensity | Dew curve specific density of refrigerant (Ancillary equation) |
| bubbleEnthalpy | Boiling curve specific enthalpy of refrigerant (Ancillary equation) |
| dewEnthalpy | Dew curve specific enthalpy of refrigerant (Ancillary equation) |
| bubbleEntropy | Boiling curve specific entropy of refrigerant (Ancillary equation) |
| dewEntropy | Dew curve specific entropy of propane (Ancillary equation) |
| temperature_ph | Calculates temperature as function of pressure and specific enthalpy |
| temperature_ps | Calculates temperature as function of pressure and specific entroy |
| density_pT | Computes density as a function of pressure and temperature |
| dynamicViscosity | Calculates dynamic viscosity of refrigerant |
| thermalConductivity | Calculates thermal conductivity of refrigerant |
| surfaceTension | Surface tension in two phase region of refrigerant |