This package provides a refrigerant model for R410a using a hybrid approach developed by Sangi et al.. The hybrid approach is implemented in AixLib.Media.Refrigerants.Interfaces.PartialHybridTwoPhaseMedium and the refrigerant model is implemented by complete the template AixLib.Media.Refrigerants.Interfaces.TemplateHybridTwoPhaseMediumRecord . The fitting coefficients required in the template are saved in the package AixLib.DataBase.Media.Refrigerants.R410a .
The implemented coefficients are fitted to external data by
Engelpracht and are valid within the following range:
|
Parameter |
Minimum Value |
Maximum Value |
|
Pressure (p) in bar |
1 |
48 |
|
Temperature (T) in K |
233.15 |
340.15 |
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.
R410a is calculated as pseudo-pure fluid and, hence, only roughly valid withing the two-phase region.
The model is validated by comparing results obtained from the example model AixLib.Media.Refrigerants.Examples.RefrigerantProperties to external data (e.g. obtained from measurements or external media libraries).
Lemmon, E. W. (2003): Pseudo-Pure Fluid Equations of State for the Refrigerant Blends R-410A, R-404A, R-507A, and R-407C. In: International Journal of Thermophysics 24 (4), S. 991–1006. DOI: 10.1023/A:1025048800563.
Geller, V. Z.; Bivens, D.; Yokozeki, A. (2000): Viscosity of Mixed Refrigerants, R404A, R407C, R410A, and R507C. In: International refrigeration and air conditioning conference. USA, S. 399–406. Online available at http://docs.lib.purdue.edu/iracc/508.
Nabizadeh, H.; Mayinger, F. (1999): Viscosity of Gaseous R404A, R407C, R410A, and R507. In: International Journal of Thermophysics 20 (3), S. 777–790. DOI: 10.1007/978-1-4615-4777-8_1.
Geller, V. Z.; Nemzer, B. V.; Cheremnykh, U. V. (2001): Thermal Conductivity of the Refrigerant Mixtures R404A, R407C, R410A, and R507A. In: International Journal of Thermophysics 22 (4), 1035–1043. DOI: 10.1023/A:1010691504352.
Fröba, A. P.; Leipertz, A. (2003): Thermophysical Properties of the Refrigerant Mixtures R410A and R407C from Dynamic Light Scattering (DLS). In: International Journal ofThermophysics 24 (5), S. 1185–1206. DOI: 10.1023/A:1026152331710.
Engelpracht, Mirko (2017): Development of modular and scalable simulation models for heat pumps and chillers considering various refrigerants. Master Thesis
| Name | Description |
|---|---|
| EoS | Record that contains fitting coefficients of the Helmholtz EoS |
| BDSP | Record that contains fitting coefficients of the state properties at bubble and dew lines |
| TSP | Record that contains fitting coefficients of the state properties calculated with two independent state properties |
| SmoothTransition | Record that contains ranges to calculate a smooth transition between different regions |
| dynamicViscosity | Calculates dynamic viscosity of refrigerant |
| thermalConductivity | Calculates thermal conductivity of refrigerant |
| surfaceTension | Surface tension in two phase region of refrigerant |