In this record, fitting coefficients are provided for the Helmholtz equation of state (EoS). For detailed information of the EoS as well as the fitting coefficients, please checkout AixLib.DataBase.Media.Refrigerants.HelmholtzEquationOfStateBaseDateDefinition . The fitting coefficients are used in a hybrid refrigerant model provided in AixLib.Media.Refrigerants. For detailed information, please checkout AixLib.Media.Refrigerants.Interfaces.TemplateHybridTwoPhaseMediumRecord.
  The provided coefficients are fitted to external data by Sangi et al.
  and are valid within the following range:
| 
           Parameter  | 
        
           Minimum Value  | 
        
           Maximum Value  | 
      
| 
           Pressure (p) in bar  | 
        
           0.5  | 
        
           30  | 
      
| 
           Temperature (T) in K  | 
        
           263.15  | 
        
           343.15  | 
      
The reference point is defined as 200 kJ/kg and 1 kJ/kg/K, respectively, for enthalpy and entropy for the saturated liquid at 273.15 K.
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