AixLib.DataBase.Media.Refrigerants.R290.EoS_IIR_P05_30_T263_343

# .AixLib.DataBase.Media.Refrigerants.R290.EoS_IIR_P05_30_T263_343

Record with fitting coefficients taken from the Fast_Propane model

## Information

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.

#### Assumptions and limitations

The provided coefficients are fitted to external data by Sangi et al. and are valid within the following range:

"Range of validiry" cellspacing="0" cellpadding="2" border="1" width="30%" style="border-collapse:collapse;">

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.

#### References

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

## Revisions

- June 10, 2017, by Mirko Engelpracht, Christian Vering:
  First implementation (see issue 408).

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