packageReferenceAir
Extends from Modelica.Icons.VariantsPackage (Icon for package containing variants).
Information
Calculation of fluid properties of air in the fluid region of 130 Kelvin to 2000 Kelvin at pressures up to 2000 MPa. To use this package in your model, select Air_dT, Air_pT or Air_ph according to which variables you choose to determine your state.
Restriction
The functions provided by this package shall be used inside of the restricted limits according to the referenced literature.
- p ≤ 2000 MPa
- 130 K ≤ T ≤ 2000 K
References
- Lemmon, E. W., Jacobsen, R. T., Penoncello, S. G., Friend, D. G.:
- Thermodynamic Properties of Air and Mixtures of Nitrogen, Argon, and Oxygen From 60 to 2000 K at Pressures to 2000 MPa. J. Phys. Chem. Ref. Data, Vol. 29, No. 3, 2000.
- Lemmon, E. W., Jacobsen, R. T.:
- Viscosity and Thermal Conductivity Equations for Nitrogen, Oxygen, Argon, and Air. International Journal of Thermophysics, Vol. 25, No. 1, January 2004
Verification
The verification report for the development of this library is provided here.
Acknowledgment
This library was developed by XRG Simulation GmbH as part of the Clean Sky JTI project (Project title: MoMoLib-Modelica Model Library Development for Media, Magnetic Systems and Wavelets; Project number: 296369; Theme: JTI-CS-2011-1-SGO-02-026: Modelica Model Library Development Part I). The partial financial support for the development of this library by the European Union is highly appreciated.
Some parts of this library refer to the ThermoFluid library developed at Lund University (http://thermofluid.sourceforge.net).
Copyright © 2013-2025, Modelica Association and contributors
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Media.Interfaces.Types.TwoPhase.FluidConstants | airConstants |
Contents
| Name | Description |
|---|---|
| MolarHeatCapacityprotected | Type for molar heat capacity with medium specific attributes |
| MolarDensityprotected | |
| IsothermalExpansionCoefficientprotected | |
 Air_ph | ReferenceAir.Air_ph: Detailed dry air model (130 ... 2000 K) explicit in p and h |
| Air_pT | ReferenceAir.Air_pT: Detailed dry air model (130 ... 2000 K) explicit in p and T |
| Air_dT | ReferenceAir.Air_dT: Detailed dry air model (130 ... 2000 K) explicit in d and T |
 Air_Base | Properties of dry air calculated using the equation of state by Lemmon et. al. |
 Air_Utilities | Low level and utility computation for high accuracy dry air properties |