Package Modelica.​Media.​Air.​ReferenceAir
ReferenceAir: Detailed dry air model with a large operating range (130 ... 2000 K, 0 ... 2000 MPa) based on Helmholtz equations of state

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.

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 © 2013-2018, Modelica Association and contributors

Extends from Modelica.​Icons.​VariantsPackage (Icon for package containing variants).

Package Contents

NameDescription
Air_Base …Properties of dry air calculated using the equation of state by Lemmon et. al.
Air_dT …ReferenceAir.Air_dT: Detailed dry air model (130 ... 2000 K) explicit in d and T
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_Utilities …Low level and utility computation for high accuracy dry air properties
IsothermalExpansionCoefficient 
MolarDensity 
MolarHeatCapacityType for molar heat capacity with medium specific attributes

Type Modelica.​Media.​Air.​ReferenceAir.​MolarHeatCapacity
Type for molar heat capacity with medium specific attributes

Extends from Modelica.​SIunits.​MolarHeatCapacity.

Attributes

NameValue
quantity"MolarHeatCapacity"
unit"J/(mol.K)"
min0
max300000
start30
nominal30

Type Modelica.​Media.​Air.​ReferenceAir.​MolarDensity

Extends from Real.

Attributes

NameValue
quantity"MolarDensity"
unit"mol/m3"
min0
maxModelica.Constants.inf
start0.

Type Modelica.​Media.​Air.​ReferenceAir.​IsothermalExpansionCoefficient

Extends from Real.

Attributes

NameValue
unit"1"
min0
max1e+8
start0.

Generated 2018-12-12 12:13:50 EST by MapleSim.