Package Modelica.Media.Air.ReferenceMoistAir
ReferenceMoistAir: Detailed moist air model (143.15 ... 2000 K)

Information

Calculation of fluid properties for moist air in the region from 143.15 Kelvin to 2000 Kelvin at pressures up to 10 MPa. This model of moist air is based on the diploma thesis of Hellriegel [10] with small modifications. Moist air is treated as an ideal mixture of the real fluids air and water.

Restriction

The functions provided by this package shall be used inside of the restricted limits according to the referenced literature.

611.2 Pa ≤ p ≤ 10 MPa
143.15 K ≤ T ≤ 2000 K

Usage

The package MoistAir can be used as any other medium model (see User's Guide of Media Library for further information). The package defines two boolean constants useEnhancementFactor and useDissociation, which give the user fine grained control of the calculations.

Constant	Default Value	Meaning
useEnhancementFactor	false	The enhancement factor is used in the calculation of the saturation partial pressure of water in moist air. It is always very close to 1 except for high pressures (>2 MPa) and low temperatures (<233.15 K). For pressures less than 1 MPa this factor can be safely set to 1. Its calculation is very expensive, since it can only be calculated by an iterative method.
useDissociation	true	The effect of dissociation is taken into account for temperatures greater than 773.15 K.

Calculation algorithms

Nomenclature

p	Mixture pressure in Pa
T	Temperature in K
x_w	Absolutue humidity in kg(water)/kg(dry air)
x_ws	Absolutue humidity on saturation boundary in kg(water)/kg(dry air)
φ	Relative humidity (only defined for unsaturated humid air)

Unsaturated and saturated humid air (0 ≤ x_w ≤ x_ws)

Ideal mixture of dry air and steam

Dry air:
- d,h,u,s,c_p from [1]
- λ, η from [2]
Steam:
- d,h,u,s,c_p from [4]
- λ, η for 273.15 K ≤ T ≤ 1073.15 K from [5] and [6]
- λ, η for T < 273.15 K or T > 1073.15 K from [12]

Supersaturated humid air (liquid fog and ice fog)

Liquid fog (x_w > x_wsw) and T ≥ 273.16 K

Ideal mixture of saturated humid air and water

Saturated humid air (see above)
d,h,u,s of liquid droplets from [4]
c_p is not defined
λ, η of liquid droplets from [5] and [6]

Ice fog (x_w > x_wsw) and T < 273.16 K

Ideal mixture of saturated humid air and ice

Saturated humid air (see above)
d,h,u,s of ice crystals from [7]
c_p is not defined
λ of ice as constant value
η of ice is neglected

Saturation pressure of water in moist air

The saturation pressure p_ds of water in moist air is calculated by p_ds = f*p_sat, where

f is the enhancement factor from [9] and [3]
p_sat for T ≥ 273.16 K is the saturation pressure from [4]
p_sat for T < 273.16 K is the saturation pressure from [8]

Dissociation

For temperatures above 773.15 K effects of dissociation are taken into account. Dissociation is modeled according to [11]. For high temperatures the calculated values for moist air with 0 kg(water)/kg(dry air) (i.e. dry air) may differ from those calculated by the package Modelica.Media.Air.ReferenceAir, because there no dissociation is considered.

References

[1] 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.

[2] Viscosity and Thermal Conductivity Equations for Nitrogen, Oxygen, Argon, and Air. International Journal of Thermophysics, Vol. 25, No. 1, January 2004

[3] Revised Release on the IAPWS Formulation 1995 for the Thermodynamic Properties of Ordinary Water Substance for General and Scientific Use. 2009 International Association for the Properties of Water and Steam.

[4] Revised Release on the IAPWS Industrial Formulation 1997 for the Thermodynamic Properties of Water and Steam. 2007 International Association for the Properties of Water and Steam.

[5] Release on the IAPWS Formulation 2008 for the Viscosity of Ordinary Water Substance. 2008 International Association for the Properties of Water and Steam

[6] Release on the IAPWS Formulation 2011 for the Thermal Conductivity of Ordinary Water Substance. 2011 International Association for the Properties of Water and Steam.

[7] Revised Release on the Equation of State 2006 for H2O Ice Ih. 2009 International Association for the Properties of Water and Steam.

[8] Revised Release on the Pressure along the Melting and Sublimation Curves of Ordinary Water Substance. 2011 International Association for the Properties of Water and Steam.

[9] Determination of Thermodynamic and Transport Properties of Humid Air for Power-Cycle Calculations. 2009 PTB, Braunschweig, Germany.

[10] Berechnung der thermodynamischen Zustandsfunktionen von feuchter Luft in energietechnischen Prozessmodellierungen. 2001 Diplomarbeit, Zittau.

[11] Thermodynamische Stoffwerte von feuchter Luft und Verbrennungsgasen. 2003 VDI-Richtlinie 4670.

[12] Wärmeübertragung in Dampferzeugern und Wärmetauschern. 1985 FDBR-Fachbuchreihe, Bd. 2, Vulkan Verlag Essen.

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).

Extends from Modelica.Media.Interfaces.PartialRealCondensingGases (Base class for mixtures of real condensing and non-condensing gases).

Package Contents

Name	Description
`AbsolutePressure`	Type for absolute pressure with medium specific attributes
`BaseProperties`	Moist air base properties record
`Basic` …	The most basic version of a record used in several degrees of detail
`beta`	Alias for isobaricExpansionCoefficient for user convenience
`Choices` …
`CumulativeExtraProperty`	Type for conserved integral of unspecified, mass specific property
`Density`	Type for density with medium specific attributes
`density`	Returns density as a function of the thermodynamic state record
`density_derh_p`	Return density derivative w.r.t. specific enthalpy at constant pressure
`density_derp_h`	Return density derivative w.r.t. pressure at const specific enthalpy
`density_derp_T`	Return density derivative w.r.t. pressure at const temperature
`density_derT_p`	Return density derivative w.r.t. temperature at constant pressure
`density_derX`	Return density derivative w.r.t. mass fraction
`density_phX`	Return density from p, h, and X or Xi
`density_psX`	Return density from p, s, and X or Xi
`density_pTX`	Return density from p, T, and X or Xi
`DerDensityByEnthalpy`	Type for partial derivative of density with respect to enthalpy with medium specific attributes
`DerDensityByPressure`	Type for partial derivative of density with respect to pressure with medium specific attributes
`DerDensityByTemperature`	Type for partial derivative of density with respect to temperature with medium specific attributes
`DerEnthalpyByPressure`	Type for partial derivative of enthalpy with respect to pressure with medium specific attributes
`DerTemperatureByPressure`	Type for partial derivative of temperature with respect to pressure with medium specific attributes
`DipoleMoment`	Type for dipole moment with medium specific attributes
`DynamicViscosity`	Type for dynamic viscosity with medium specific attributes
`dynamicViscosity`	Return dynamic viscosity as a function of the thermodynamic state record, valid from 73.15 K to 373.15 K
`EnthalpyFlowRate`	Type for enthalpy flow rate with medium specific attributes
`enthalpyOfCondensingGas`	Return specific enthalpy of steam
`enthalpyOfDryAir`	Return specific enthalpy of dry air
`enthalpyOfGas`	Return specific enthalpy of gas (air and steam)
`enthalpyOfLiquid`	Return enthalpy of liquid water
`enthalpyOfNonCondensingGas`	Return specific enthalpy of dry air
`enthalpyOfVaporization`	Return enthalpy of vaporization of water
`enthalpyOfWater`	Return specific enthalpy of water (solid + liquid + steam)
`enthalpyOfWaterNonVapor`	Return enthalpy of liquid and solid water
`enthalpyOfWaterVapor`	Return specific enthalpy of steam
`ExtraProperty`	Type for unspecified, mass-specific property transported by flow
`ExtraPropertyFlowRate`	Type for flow rate of unspecified, mass-specific property
`FixedPhase`	Phase of the fluid: 1 for 1-phase, 2 for two-phase, 0 for not known, e.g., interactive use
`FluidConstants`
`FluidLimits`	Validity limits for fluid model
`gasConstant`	Return ideal gas constant as a function from thermodynamic state, only valid for phi<1
`heatCapacity_cp`	Alias for deprecated name
`heatCapacity_cv`	Alias for deprecated name
`IdealGas` …	The ideal gas version of a record used in several degrees of detail
`isentropicEnthalpy`	Return isentropic enthalpy
`IsentropicExponent`	Type for isentropic exponent with medium specific attributes
`isentropicExponent`	Return isentropic exponent
`IsobaricExpansionCoefficient`	Type for isobaric expansion coefficient with medium specific attributes
`isobaricExpansionCoefficient`	Return overall the isobaric expansion coefficient beta
`isothermalCompressibility`	Return overall the isothermal compressibility factor
`kappa`	Alias of isothermalCompressibility for user convenience
`MassFlowRate`	Type for mass flow rate with medium specific attributes
`MassFraction`	Type for mass fraction with medium specific attributes
`massFraction_pTphi`	Return mass fractions as a function of pressure, temperature and relative humidity
`massFraction_waterContent`	Return mass fractions as a function of pressure, temperature and absolute humidity in kg(water)/kg(dry air)
`massFractionSaturation`	Return saturation mass fractions
`massFractionSaturation_ppsat`	Return mass fvraction at saturation boundary given pressure and saturation pressure
`massFractionWaterNonVapor`	Return mass fraction of liquid and solid water
`massFractionWaterVapor`	Return mass fraction of water vapor
`massToMoleFractions`	Return mole fractions from mass fractions X
`MolarMass`	Type for molar mass with medium specific attributes
`molarMass`	Return the molar mass of the medium
`MolarVolume`	Type for molar volume with medium specific attributes
`MoleFraction`	Type for mole fraction with medium specific attributes
`moleToMassFractions`	Return mass fractions X from mole fractions
`PrandtlNumber`	Type for Prandtl number with medium specific attributes
`prandtlNumber`	Return the Prandtl number
`pressure`	Returns pressure of ideal gas as a function of the thermodynamic state record
`relativeHumidity`	Return relative humidity
`saturationPressure`	Return saturation pressure of condensing fluid
`saturationPressureLiquid`	Return saturation pressure of water as a function of temperature T
`SaturationProperties`	Saturation properties of two phase medium
`saturationTemperature`	Return saturation temperature of condensing fluid
`setSmoothState`	Return thermodynamic state so that it smoothly approximates: if x > 0 then state_a else state_b
`setState_dTX`	Return thermodynamic state as function of density d, temperature T and composition X
`setState_phX`	Return thermodynamic state as function of pressure p, specific enthalpy h and composition X
`setState_psX`	Return thermodynamic state as function of pressure p, specific enthalpy h and composition X
`setState_pTX`	Return thermodynamic state as function of pressure p, temperature T and composition X
`SpecificEnergy`	Type for specific energy with medium specific attributes
`SpecificEnthalpy`	Type for specific enthalpy with medium specific attributes
`specificEnthalpy`	Return specific enthalpy of moist air as a function of the thermodynamic state record
`specificEnthalpy_psX`	Return specific enthalpy from p, s, and X or Xi
`specificEnthalpy_pTX`	Return specific enthalpy from p, T, and X or Xi
`SpecificEntropy`	Type for specific entropy with medium specific attributes
`specificEntropy`	Return specific entropy from thermodynamic state record, only valid for phi<1
`specificEntropy_phX`	Return specific entropy as a function of pressure, specific enthalpy and mass fractions
`specificEntropy_pTX`	Return specific enthalpy from p, T, and X or Xi
`specificGibbsEnergy`	Return specific Gibbs energy as a function of the thermodynamic state record, only valid for phi<1
`SpecificHeatCapacity`	Type for specific heat capacity with medium specific attributes
`specificHeatCapacityCp`	Return specific heat capacity at constant pressure as a function of the thermodynamic state record
`specificHeatCapacityCv`	Return specific heat capacity at constant volume as a function of the thermodynamic state record
`specificHelmholtzEnergy`	Return specific Helmholtz energy as a function of the thermodynamic state record, only valid for phi<1
`SpecificInternalEnergy`	Type for specific internal energy with medium specific attributes
`specificInternalEnergy`	Return specific internal energy of moist air as a function of the thermodynamic state record
`sublimationPressureIce`	Return sublimation pressure of water as a function of temperature T between 223.16 and 273.16 K
`SurfaceTension`	Type for surface tension with medium specific attributes
`Temperature`	Type for temperature with medium specific attributes
`temperature`	Return temperature of ideal gas as a function of the thermodynamic state record
`temperature_phX`	Return temperature from p, h, and X or Xi
`temperature_psX`	Return temperature from p,s, and X or Xi
`ThermalConductivity`	Type for thermal conductivity with medium specific attributes
`thermalConductivity`	Return thermal conductivity as a function of the thermodynamic state record, valid from 73.15 K to 373.15 K
`ThermodynamicState`	ThermodynamicState record for moist air
`TwoPhase` …	The two phase fluid version of a record used in several degrees of detail
`Utilities` …	Utility package for moist air
`VelocityOfSound`	Type for velocity of sound with medium specific attributes
`velocityOfSound`	Return velocity of sound
`waterContent_X`	Return water content in kg(water)/kg(dry air) given mass fractions
`Xsaturation`	Return absolute humitity per unit mass of moist air at saturation as a function of the thermodynamic state record
`xsaturation`	Return absolute humitity per unit mass of dry air at saturation as a function of the thermodynamic state record

Package Constants

Type	Name	Value	Description
`Integer`	`Air`	`2`	Index of air (in substanceNames, massFractions X, etc.)
`ExtraProperty`	`C_default[nC]`	`fill(0, nC)`	Default value for trace substances of medium (for initialization)
`Real`	`C_nominal[nC]`	`1e-6 * ones(nC)`	Default for the nominal values for the extra properties
`FundamentalConstants`	`dryair`	`ReferenceAir.Air_Utilities.Basic.Constants`
`String`	`extraPropertiesNames[:]`	`fill("", 0)`	Names of the additional (extra) transported properties. Set extraPropertiesNames=fill("",0) if unused
`final` `Boolean`	`fixedX`	`false`	= true if medium contains the equation X = reference_X
`FluidConstants`	`fluidConstants[nS]`	`{Utilities.Water95_Utilities.waterConstants, Modelica.Media.Air.ReferenceAir.airConstants}`	Constant data for the fluid
`SpecificEnthalpy`	`h_default`	`specificEnthalpy_pTX(p_default, T_default, X_default)`	Default value for specific enthalpy of medium (for initialization)
`Real`	`k_mair`	`steam.MM / dryair.MM`	Ratio of molar weights
`String`	`mediumName`	`"Moist air"`	Name of the medium
`MolarMass`	`MMX[2]`	`{steam.MM, dryair.MM}`	Molar masses of components
`final` `Integer`	`nC`	`size(extraPropertiesNames, 1)`	Number of extra (outside of standard mass-balance) transported properties
`final` `Integer`	`nS`	`size(substanceNames, 1)`	Number of substances
`Integer`	`nX`	`nS`	Number of mass fractions
`Integer`	`nXi`	`if fixedX then 0 else if reducedX then nS - 1 else nS`	Number of structurally independent mass fractions (see docu for details)
`AbsolutePressure`	`p_default`	`101325`	Default value for pressure of medium (for initialization)
`final` `Boolean`	`reducedX`	`true`	= true if medium contains the equation sum(X) = 1.0; set reducedX=true if only one substance (see docu for details)
`AbsolutePressure`	`reference_p`	`101325`	Reference pressure of Medium: default 1 atmosphere
`Temperature`	`reference_T`	`298.15`	Reference temperature of Medium: default 25 deg Celsius
`MassFraction`	`reference_X[nX]`	`{0.01, 0.99}`	Default mass fractions of medium
`final` `Boolean`	`singleState`	`false`	= true, if u and d are not a function of pressure
`FundamentalConstants`	`steam`	`Utilities.Water95_Utilities.Constants`
`String`	`substanceNames[:]`	`{"Water", "Air"}`	Names of the mixture substances. Set substanceNames={mediumName} if only one substance.
`Temperature`	`T_default`	`Modelica.SIunits.Conversions.from_degC(20)`	Default value for temperature of medium (for initialization)
`IndependentVariables`	`ThermoStates`	`Modelica.Media.Interfaces.Choices.IndependentVariables.pTX`	Enumeration type for independent variables
`Boolean`	`useDissociation`	`true`	Take dissociation into account for high temperatures
`Boolean`	`useEnhancementFactor`	`false`	Use the enhancement factor in the calculations
`Integer`	`Water`	`1`	Index of water (in substanceNames, massFractions X, etc.)
`MassFraction`	`X_default[nX]`	`reference_X`	Default value for mass fractions of medium (for initialization)

Type Modelica.Media.Air.ReferenceMoistAir.AbsolutePressure
Type for absolute pressure with medium specific attributes

Extends from Modelica.SIunits.AbsolutePressure.

Attributes

Name	Value
`quantity`	`"Pressure"`
`unit`	`"Pa"`
`displayUnit`	`"bar"`
`min`	`0`
`max`	`1e+8`
`start`	`100000`
`nominal`	`100000`

Type Modelica.Media.Air.ReferenceMoistAir.Density
Type for density with medium specific attributes

Extends from Modelica.SIunits.Density.

Attributes

Name	Value
`quantity`	`"Density"`
`unit`	`"kg/m3"`
`displayUnit`	`"g/cm3"`
`min`	`0`
`max`	`100000`
`start`	`1`
`nominal`	`1`

Type Modelica.Media.Air.ReferenceMoistAir.DynamicViscosity
Type for dynamic viscosity with medium specific attributes

Extends from Modelica.SIunits.DynamicViscosity.

Attributes

Name	Value
`quantity`	`"DynamicViscosity"`
`unit`	`"Pa.s"`
`min`	`0`
`max`	`1e+8`
`start`	`0.001`
`nominal`	`0.001`

Type Modelica.Media.Air.ReferenceMoistAir.EnthalpyFlowRate
Type for enthalpy flow rate with medium specific attributes

Extends from Modelica.SIunits.EnthalpyFlowRate.

Attributes

Name	Value
`quantity`	`"EnthalpyFlowRate"`
`unit`	`"W"`
`min`	`-1e+8`
`max`	`1e+8`
`start`	`0.`
`nominal`	`1000`

Type Modelica.Media.Air.ReferenceMoistAir.MassFraction
Type for mass fraction with medium specific attributes

Extends from Real.

Attributes

Name	Value
`quantity`	`"MassFraction"`
`unit`	`"kg/kg"`
`min`	`0`
`max`	`1`
`start`	`0.`
`nominal`	`0.1`

Type Modelica.Media.Air.ReferenceMoistAir.MoleFraction
Type for mole fraction with medium specific attributes

Extends from Real.

Attributes

Name	Value
`quantity`	`"MoleFraction"`
`unit`	`"mol/mol"`
`min`	`0`
`max`	`1`
`start`	`0.`
`nominal`	`0.1`

Type Modelica.Media.Air.ReferenceMoistAir.MolarMass
Type for molar mass with medium specific attributes

Extends from Modelica.SIunits.MolarMass.

Attributes

Name	Value
`quantity`	`"MolarMass"`
`unit`	`"kg/mol"`
`min`	`0.001`
`max`	`0.25`
`start`	`0.`
`nominal`	`0.032`

Type Modelica.Media.Air.ReferenceMoistAir.MolarVolume
Type for molar volume with medium specific attributes

Extends from Modelica.SIunits.MolarVolume.

Attributes

Name	Value
`quantity`	`"MolarVolume"`
`unit`	`"m3/mol"`
`min`	`1e-6`
`max`	`1000000`
`start`	`0.`
`nominal`	`1`

Type Modelica.Media.Air.ReferenceMoistAir.IsentropicExponent
Type for isentropic exponent with medium specific attributes

Extends from Modelica.SIunits.RatioOfSpecificHeatCapacities.

Attributes

Name	Value
`quantity`	`"RatioOfSpecificHeatCapacities"`
`unit`	`"1"`
`min`	`1`
`max`	`500000`
`start`	`1.2`
`nominal`	`1.2`

Type Modelica.Media.Air.ReferenceMoistAir.SpecificEnergy
Type for specific energy with medium specific attributes

Extends from Modelica.SIunits.SpecificEnergy.

Attributes

Name	Value
`quantity`	`"SpecificEnergy"`
`unit`	`"J/kg"`
`min`	`-1e+8`
`max`	`1e+8`
`start`	`0.`
`nominal`	`1000000`

Type Modelica.Media.Air.ReferenceMoistAir.SpecificInternalEnergy
Type for specific internal energy with medium specific attributes

Extends from Modelica.Media.Air.ReferenceMoistAir.SpecificEnergy (Type for specific energy with medium specific attributes).

Attributes

Name	Value
`quantity`	`"SpecificEnergy"`
`unit`	`"J/kg"`
`min`	`-1e+8`
`max`	`1e+8`
`start`	`0.`
`nominal`	`1000000`

Type Modelica.Media.Air.ReferenceMoistAir.SpecificEnthalpy
Type for specific enthalpy with medium specific attributes

Extends from Modelica.SIunits.SpecificEnthalpy.

Attributes

Name	Value
`quantity`	`"SpecificEnergy"`
`unit`	`"J/kg"`
`min`	`-1e+10`
`max`	`1e+10`
`start`	`0.`
`nominal`	`1000000`

Type Modelica.Media.Air.ReferenceMoistAir.SpecificEntropy
Type for specific entropy with medium specific attributes

Extends from Modelica.SIunits.SpecificEntropy.

Attributes

Name	Value
`quantity`	`"SpecificEntropy"`
`unit`	`"J/(kg.K)"`
`min`	`-1e+7`
`max`	`1e+7`
`start`	`0.`
`nominal`	`1000`

Type Modelica.Media.Air.ReferenceMoistAir.SpecificHeatCapacity
Type for specific heat capacity with medium specific attributes

Extends from Modelica.SIunits.SpecificHeatCapacity.

Attributes

Name	Value
`quantity`	`"SpecificHeatCapacity"`
`unit`	`"J/(kg.K)"`
`min`	`0`
`max`	`1e+7`
`start`	`1000`
`nominal`	`1000`

Type Modelica.Media.Air.ReferenceMoistAir.SurfaceTension
Type for surface tension with medium specific attributes

Extends from Modelica.SIunits.SurfaceTension.

Attributes

Name	Value
`quantity`	`"SurfaceTension"`
`unit`	`"N/m"`
`min`	`-Modelica.Constants.inf`
`max`	`Modelica.Constants.inf`
`start`	`0.`

Type Modelica.Media.Air.ReferenceMoistAir.Temperature
Type for temperature with medium specific attributes

Extends from Modelica.SIunits.Temperature.

Attributes

Name	Value
`quantity`	`"ThermodynamicTemperature"`
`unit`	`"K"`
`displayUnit`	`"degC"`
`min`	`1`
`max`	`10000`
`start`	`288.15`
`nominal`	`300`

Type Modelica.Media.Air.ReferenceMoistAir.ThermalConductivity
Type for thermal conductivity with medium specific attributes

Extends from Modelica.SIunits.ThermalConductivity.

Attributes

Name	Value
`quantity`	`"ThermalConductivity"`
`unit`	`"W/(m.K)"`
`min`	`0`
`max`	`500`
`start`	`1`
`nominal`	`1`

Type Modelica.Media.Air.ReferenceMoistAir.PrandtlNumber
Type for Prandtl number with medium specific attributes

Extends from Modelica.SIunits.PrandtlNumber.

Attributes

Name	Value
`quantity`	`"PrandtlNumber"`
`unit`	`"1"`
`min`	`0.001`
`max`	`100000`
`start`	`0.`
`nominal`	`1`

Type Modelica.Media.Air.ReferenceMoistAir.VelocityOfSound
Type for velocity of sound with medium specific attributes

Extends from Modelica.SIunits.Velocity.

Attributes

Name	Value
`quantity`	`"Velocity"`
`unit`	`"m/s"`
`min`	`0`
`max`	`100000`
`start`	`1000`
`nominal`	`1000`

Type Modelica.Media.Air.ReferenceMoistAir.ExtraProperty
Type for unspecified, mass-specific property transported by flow

Extends from Real.

Attributes

Name	Value
`min`	`0`
`max`	`Modelica.Constants.inf`
`start`	`1`

Type Modelica.Media.Air.ReferenceMoistAir.CumulativeExtraProperty
Type for conserved integral of unspecified, mass specific property

Extends from Real.

Attributes

Name	Value
`min`	`0`
`max`	`Modelica.Constants.inf`
`start`	`1`

Type Modelica.Media.Air.ReferenceMoistAir.ExtraPropertyFlowRate
Type for flow rate of unspecified, mass-specific property

Extends from Real.

Attributes

Name	Value
`unit`	`"kg/s"`
`min`	`-Modelica.Constants.inf`
`max`	`Modelica.Constants.inf`
`start`	`0.`

Type Modelica.Media.Air.ReferenceMoistAir.IsobaricExpansionCoefficient
Type for isobaric expansion coefficient with medium specific attributes

Extends from Real.

Attributes

Name	Value
`unit`	`"1/K"`
`min`	`0`
`max`	`1e+8`
`start`	`0.`

Type Modelica.Media.Air.ReferenceMoistAir.DipoleMoment
Type for dipole moment with medium specific attributes

Extends from Real.

Attributes

Name	Value
`quantity`	`"ElectricDipoleMoment"`
`unit`	`"debye"`
`min`	`0`
`max`	`2`
`start`	`0.`

Type Modelica.Media.Air.ReferenceMoistAir.DerDensityByPressure
Type for partial derivative of density with respect to pressure with medium specific attributes

Extends from Modelica.SIunits.DerDensityByPressure.

Attributes

Name	Value
`unit`	`"s2/m2"`
`min`	`-Modelica.Constants.inf`
`max`	`Modelica.Constants.inf`
`start`	`0.`

Type Modelica.Media.Air.ReferenceMoistAir.DerDensityByEnthalpy
Type for partial derivative of density with respect to enthalpy with medium specific attributes

Extends from Modelica.SIunits.DerDensityByEnthalpy.

Attributes

Name	Value
`unit`	`"kg.s2/m5"`
`min`	`-Modelica.Constants.inf`
`max`	`Modelica.Constants.inf`
`start`	`0.`

Type Modelica.Media.Air.ReferenceMoistAir.DerEnthalpyByPressure
Type for partial derivative of enthalpy with respect to pressure with medium specific attributes

Extends from Modelica.SIunits.DerEnthalpyByPressure.

Attributes

Name	Value
`unit`	`"J.m.s2/kg2"`
`min`	`-Modelica.Constants.inf`
`max`	`Modelica.Constants.inf`
`start`	`0.`

Type Modelica.Media.Air.ReferenceMoistAir.DerDensityByTemperature
Type for partial derivative of density with respect to temperature with medium specific attributes

Extends from Modelica.SIunits.DerDensityByTemperature.

Attributes

Name	Value
`unit`	`"kg/(m3.K)"`
`min`	`-Modelica.Constants.inf`
`max`	`Modelica.Constants.inf`
`start`	`0.`

Type Modelica.Media.Air.ReferenceMoistAir.DerTemperatureByPressure
Type for partial derivative of temperature with respect to pressure with medium specific attributes

Extends from Real.

Attributes

Name	Value
`unit`	`"K/Pa"`
`min`	`-Modelica.Constants.inf`
`max`	`Modelica.Constants.inf`
`start`	`0.`

Record Modelica.Media.Air.ReferenceMoistAir.SaturationProperties
Saturation properties of two phase medium

Information

This icon is indicates a record.

Extends from Modelica.Icons.Record (Icon for records).

Fields

Type	Name	Description
`AbsolutePressure`	`psat`	Saturation pressure
`Temperature`	`Tsat`	Saturation temperature

Record Modelica.Media.Air.ReferenceMoistAir.FluidLimits
Validity limits for fluid model

Information

The minimum pressure mostly applies to the liquid state only. The minimum density is also arbitrary, but is reasonable for technical applications to limit iterations in non-linear systems. The limits in enthalpy and entropy are used as safeguards in inverse iterations.

Extends from Modelica.Icons.Record (Icon for records).

Fields

Type	Name	Description
`Temperature`	`TMIN`	Minimum temperature
`Temperature`	`TMAX`	Maximum temperature
`Density`	`DMIN`	Minimum density
`Density`	`DMAX`	Maximum density
`AbsolutePressure`	`PMIN`	Minimum pressure
`AbsolutePressure`	`PMAX`	Maximum pressure
`SpecificEnthalpy`	`HMIN`	Minimum enthalpy
`SpecificEnthalpy`	`HMAX`	Maximum enthalpy
`SpecificEntropy`	`SMIN`	Minimum entropy
`SpecificEntropy`	`SMAX`	Maximum entropy

Type Modelica.Media.Air.ReferenceMoistAir.FixedPhase
Phase of the fluid: 1 for 1-phase, 2 for two-phase, 0 for not known, e.g., interactive use

Extends from Integer.

Attributes

Name	Value
`min`	`0`
`max`	`2`
`start`	`0`

Record Modelica.Media.Air.ReferenceMoistAir.FluidConstants
Extended fluid constants

Information

This icon is indicates a record.

Extends from Modelica.Media.Interfaces.Types.TwoPhase.FluidConstants (Extended fluid constants).

Fields

Type	Name	Description
`String`	`iupacName`	Complete IUPAC name (or common name, if non-existent)
`String`	`casRegistryNumber`	Chemical abstracts sequencing number (if it exists)
`String`	`chemicalFormula`	Chemical formula, (brutto, nomenclature according to Hill
`String`	`structureFormula`	Chemical structure formula
`MolarMass`	`molarMass`	Molar mass
`Temperature`	`criticalTemperature`	Critical temperature
`AbsolutePressure`	`criticalPressure`	Critical pressure
`MolarVolume`	`criticalMolarVolume`	Critical molar Volume
`Real`	`acentricFactor`	Pitzer acentric factor
`Temperature`	`triplePointTemperature`	Triple point temperature
`AbsolutePressure`	`triplePointPressure`	Triple point pressure
`Temperature`	`meltingPoint`	Melting point at 101325 Pa
`Temperature`	`normalBoilingPoint`	Normal boiling point (at 101325 Pa)
`DipoleMoment`	`dipoleMoment`	Dipole moment of molecule in Debye (1 debye = 3.33564e10-30 C.m)
`Boolean`	`hasIdealGasHeatCapacity`	True if ideal gas heat capacity is available
`Boolean`	`hasCriticalData`	True if critical data are known
`Boolean`	`hasDipoleMoment`	True if a dipole moment known
`Boolean`	`hasFundamentalEquation`	True if a fundamental equation
`Boolean`	`hasLiquidHeatCapacity`	True if liquid heat capacity is available
`Boolean`	`hasSolidHeatCapacity`	True if solid heat capacity is available
`Boolean`	`hasAccurateViscosityData`	True if accurate data for a viscosity function is available
`Boolean`	`hasAccurateConductivityData`	True if accurate data for thermal conductivity is available
`Boolean`	`hasVapourPressureCurve`	True if vapour pressure data, e.g., Antoine coefficients are known
`Boolean`	`hasAcentricFactor`	True if Pitzer acentric factor is known
`SpecificEnthalpy`	`HCRIT0`	Critical specific enthalpy of the fundamental equation
`SpecificEntropy`	`SCRIT0`	Critical specific entropy of the fundamental equation
`SpecificEnthalpy`	`deltah`	Difference between specific enthalpy model (h_m) and f.eq. (h_f) (h_m - h_f)
`SpecificEntropy`	`deltas`	Difference between specific enthalpy model (s_m) and f.eq. (s_f) (s_m - s_f)

Record Modelica.Media.Air.ReferenceMoistAir.ThermodynamicState
ThermodynamicState record for moist air

Information

This icon is indicates a record.

Extends from Modelica.Media.Interfaces.PartialRealCondensingGases.ThermodynamicState (Thermodynamic state variables).

Fields

Type	Name	Description
`AbsolutePressure`	`p`	Absolute pressure of medium
`Temperature`	`T`	Temperature of medium
`MassFraction`	`X[nX]`	Mass fractions (= (component mass)/total mass m_i/m)

Model Modelica.Media.Air.ReferenceMoistAir.BaseProperties
Moist air base properties record

Information

Model BaseProperties is a model within package PartialMedium and contains the declarations of the minimum number of variables that every medium model is supposed to support. A specific medium inherits from model BaseProperties and provides the equations for the basic properties.

The BaseProperties model contains the following 7+nXi variables (nXi is the number of independent mass fractions defined in package PartialMedium):

Variable	Unit	Description
T	K	temperature
p	Pa	absolute pressure
d	kg/m3	density
h	J/kg	specific enthalpy
u	J/kg	specific internal energy
Xi[nXi]	kg/kg	independent mass fractions m_i/m
R	J/kg.K	gas constant
M	kg/mol	molar mass

In order to implement an actual medium model, one can extend from this base model and add 5 equations that provide relations among these variables. Equations will also have to be added in order to set all the variables within the ThermodynamicState record state.

If standardOrderComponents=true, the full composition vector X[nX] is determined by the equations contained in this base class, depending on the independent mass fraction vector Xi[nXi].

Additional 2 + nXi equations will have to be provided when using the BaseProperties model, in order to fully specify the thermodynamic conditions. The input connector qualifier applied to p, h, and nXi indirectly declares the number of missing equations, permitting advanced equation balance checking by Modelica tools. Please note that this doesn't mean that the additional equations should be connection equations, nor that exactly those variables should be supplied, in order to complete the model. For further information, see the Modelica.Media User's guide, and Section 4.7 (Balanced Models) of the Modelica 3.0 specification.

Extends from Modelica.Media.Interfaces.PartialRealCondensingGases.BaseProperties (Base properties (p, d, T, h, u, R, MM and, if applicable, X and Xi) of a medium).

Parameters

Type	Name	Default	Description
`Boolean`	`preferredMediumStates`	`false`	= true if StateSelect.prefer shall be used for the independent property variables of the medium
`final` `Boolean`	`standardOrderComponents`	`true`	If true, and reducedX = true, the last element of X will be computed from the other ones

Connectors

Type	Name	Description
`input` `InputAbsolutePressure`	`p`	Absolute pressure of medium
`input` `InputMassFraction`	`Xi[nXi]`	Structurally independent mass fractions
`input` `InputSpecificEnthalpy`	`h`	Specific enthalpy of medium

Function Modelica.Media.Air.ReferenceMoistAir.setState_pTX
Return thermodynamic state as function of pressure p, temperature T and composition X

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialRealCondensingGases.setState_pTX (Return thermodynamic state as function of p, T and composition X or Xi).

Inputs

Type	Name	Description
`AbsolutePressure`	`p`	Pressure
`Temperature`	`T`	Temperature
`MassFraction`	`X[:]`	Mass fractions

Outputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Function Modelica.Media.Air.ReferenceMoistAir.setState_phX
Return thermodynamic state as function of pressure p, specific enthalpy h and composition X

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialRealCondensingGases.setState_phX (Return thermodynamic state as function of p, h and composition X or Xi).

Inputs

Type	Name	Description
`AbsolutePressure`	`p`	Pressure
`SpecificEnthalpy`	`h`	Specific enthalpy
`MassFraction`	`X[:]`	Mass fractions

Outputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Function Modelica.Media.Air.ReferenceMoistAir.setState_psX
Return thermodynamic state as function of pressure p, specific enthalpy h and composition X

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialRealCondensingGases.setState_psX (Return thermodynamic state as function of p, s and composition X or Xi).

Inputs

Type	Name	Description
`AbsolutePressure`	`p`	Pressure
`SpecificEntropy`	`s`	Specific entropy
`MassFraction`	`X[:]`	Mass fractions

Outputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Function Modelica.Media.Air.ReferenceMoistAir.setState_dTX
Return thermodynamic state as function of density d, temperature T and composition X

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialRealCondensingGases.setState_dTX (Return thermodynamic state as function of d, T and composition X or Xi).

Inputs

Type	Name	Description
`Density`	`d`	Density
`Temperature`	`T`	Temperature
`MassFraction`	`X[:]`	Mass fractions

Outputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Function Modelica.Media.Air.ReferenceMoistAir.setSmoothState
Return thermodynamic state so that it smoothly approximates: if x > 0 then state_a else state_b

Information

This function is used to approximate the equation

    state = if x > 0 then state_a else state_b;

by a smooth characteristic, so that the expression is continuous and differentiable:

   state := smooth(1, if x >  x_small then state_a else
                      if x < -x_small then state_b else f(state_a, state_b));

This is performed by applying function Media.Common.smoothStep(..) on every element of the thermodynamic state record.

If mass fractions X[:] are approximated with this function then this can be performed for all nX mass fractions, instead of applying it for nX-1 mass fractions and computing the last one by the mass fraction constraint sum(X)=1. The reason is that the approximating function has the property that sum(state.X) = 1, provided sum(state_a.X) = sum(state_b.X) = 1. This can be shown by evaluating the approximating function in the abs(x) < x_small region (otherwise state.X is either state_a.X or state_b.X):

    X[1]  = smoothStep(x, X_a[1] , X_b[1] , x_small);
    X[2]  = smoothStep(x, X_a[2] , X_b[2] , x_small);
       ...
    X[nX] = smoothStep(x, X_a[nX], X_b[nX], x_small);

    X[1]  = c*(X_a[1]  - X_b[1])  + (X_a[1]  + X_b[1])/2
    X[2]  = c*(X_a[2]  - X_b[2])  + (X_a[2]  + X_b[2])/2;
       ...
    X[nX] = c*(X_a[nX] - X_b[nX]) + (X_a[nX] + X_b[nX])/2;
    c     = (x/x_small)*((x/x_small)^2 - 3)/4

Summing all mass fractions together results in

    sum(X) = c*(sum(X_a) - sum(X_b)) + (sum(X_a) + sum(X_b))/2
           = c*(1 - 1) + (1 + 1)/2
           = 1

Extends from Modelica.Media.Interfaces.PartialRealCondensingGases.setSmoothState (Return thermodynamic state so that it smoothly approximates: if x > 0 then state_a else state_b).

Inputs

Type	Name	Description
`Real`	`x`	m_flow or dp
`ThermodynamicState`	`state_a`	Thermodynamic state if x > 0
`ThermodynamicState`	`state_b`	Thermodynamic state if x < 0
`Real`	`x_small`	Smooth transition in the region -x_small < x < x_small

Outputs

Type	Name	Description
`ThermodynamicState`	`state`	Smooth thermodynamic state for all x (continuous and differentiable)

Function Modelica.Media.Air.ReferenceMoistAir.dynamicViscosity
Return dynamic viscosity as a function of the thermodynamic state record, valid from 73.15 K to 373.15 K

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialRealCondensingGases.dynamicViscosity (Return dynamic viscosity).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`DynamicViscosity`	`eta`	Dynamic viscosity

Function Modelica.Media.Air.ReferenceMoistAir.thermalConductivity
Return thermal conductivity as a function of the thermodynamic state record, valid from 73.15 K to 373.15 K

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialRealCondensingGases.thermalConductivity (Return thermal conductivity).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`ThermalConductivity`	`lambda`	Thermal conductivity

Function Modelica.Media.Air.ReferenceMoistAir.prandtlNumber
Return the Prandtl number

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`PrandtlNumber`	`Pr`	Prandtl number

Function Modelica.Media.Air.ReferenceMoistAir.pressure
Returns pressure of ideal gas as a function of the thermodynamic state record

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialRealCondensingGases.pressure (Return pressure).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`AbsolutePressure`	`p`	Pressure

Function Modelica.Media.Air.ReferenceMoistAir.temperature
Return temperature of ideal gas as a function of the thermodynamic state record

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialRealCondensingGases.temperature (Return temperature).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`Temperature`	`T`	Temperature

Function Modelica.Media.Air.ReferenceMoistAir.density
Returns density as a function of the thermodynamic state record

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialRealCondensingGases.density (Return density).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`Density`	`d`	Density

Function Modelica.Media.Air.ReferenceMoistAir.specificEnthalpy
Return specific enthalpy of moist air as a function of the thermodynamic state record

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialRealCondensingGases.specificEnthalpy (Return specific enthalpy).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Specific enthalpy

Function Modelica.Media.Air.ReferenceMoistAir.specificInternalEnergy
Return specific internal energy of moist air as a function of the thermodynamic state record

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialRealCondensingGases.specificInternalEnergy (Return specific internal energy).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`SpecificEnergy`	`u`	Specific internal energy

Function Modelica.Media.Air.ReferenceMoistAir.specificEntropy
Return specific entropy from thermodynamic state record, only valid for phi<1

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialRealCondensingGases.specificEntropy (Return specific entropy).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`SpecificEntropy`	`s`	Specific entropy

Function Modelica.Media.Air.ReferenceMoistAir.specificGibbsEnergy
Return specific Gibbs energy as a function of the thermodynamic state record, only valid for phi<1

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialRealCondensingGases.specificGibbsEnergy (Return specific Gibbs energy).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`SpecificEnergy`	`g`	Specific Gibbs energy

Function Modelica.Media.Air.ReferenceMoistAir.specificHelmholtzEnergy
Return specific Helmholtz energy as a function of the thermodynamic state record, only valid for phi<1

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialRealCondensingGases.specificHelmholtzEnergy (Return specific Helmholtz energy).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`SpecificEnergy`	`f`	Specific Helmholtz energy

Function Modelica.Media.Air.ReferenceMoistAir.specificHeatCapacityCp
Return specific heat capacity at constant pressure as a function of the thermodynamic state record

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialRealCondensingGases.specificHeatCapacityCp (Return specific heat capacity at constant pressure).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`SpecificHeatCapacity`	`cp`	Specific heat capacity at constant pressure

Function Modelica.Media.Air.ReferenceMoistAir.heatCapacity_cp
Alias for deprecated name

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Air.ReferenceMoistAir.specificHeatCapacityCp (Return specific heat capacity at constant pressure as a function of the thermodynamic state record).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`SpecificHeatCapacity`	`cp`	Specific heat capacity at constant pressure

Function Modelica.Media.Air.ReferenceMoistAir.specificHeatCapacityCv
Return specific heat capacity at constant volume as a function of the thermodynamic state record

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialRealCondensingGases.specificHeatCapacityCv (Return specific heat capacity at constant volume).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`SpecificHeatCapacity`	`cv`	Specific heat capacity at constant volume

Function Modelica.Media.Air.ReferenceMoistAir.heatCapacity_cv
Alias for deprecated name

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Air.ReferenceMoistAir.specificHeatCapacityCv (Return specific heat capacity at constant volume as a function of the thermodynamic state record).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`SpecificHeatCapacity`	`cv`	Specific heat capacity at constant volume

Function Modelica.Media.Air.ReferenceMoistAir.isentropicExponent
Return isentropic exponent

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialRealCondensingGases.isentropicExponent (Return isentropic exponent).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`IsentropicExponent`	`gamma`	Isentropic exponent

Function Modelica.Media.Air.ReferenceMoistAir.isentropicEnthalpy
Return isentropic enthalpy

Information

This function computes an isentropic state transformation:

A medium is in a particular state, refState.
The enthalpy at another state (h_is) shall be computed under the assumption that the state transformation from refState to h_is is performed with a change of specific entropy ds = 0 and the pressure of state h_is is p_downstream and the composition X upstream and downstream is assumed to be the same.

Extends from Modelica.Media.Interfaces.PartialRealCondensingGases.isentropicEnthalpy (Return isentropic enthalpy).

Inputs

Type	Name	Description
`AbsolutePressure`	`p_downstream`	Downstream pressure
`ThermodynamicState`	`refState`	Reference state for entropy

Outputs

Type	Name	Description
`SpecificEnthalpy`	`h_is`	Isentropic enthalpy

Function Modelica.Media.Air.ReferenceMoistAir.velocityOfSound
Return velocity of sound

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialRealCondensingGases.velocityOfSound (Return velocity of sound).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`VelocityOfSound`	`a`	Velocity of sound

Partial Function Modelica.Media.Air.ReferenceMoistAir.isobaricExpansionCoefficient
Return overall the isobaric expansion coefficient beta

Information

beta is defined as  1/v * der(v,T), with v = 1/d, at constant pressure p.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`IsobaricExpansionCoefficient`	`beta`	Isobaric expansion coefficient

Partial Function Modelica.Media.Air.ReferenceMoistAir.beta
Alias for isobaricExpansionCoefficient for user convenience

Information

beta is defined as  1/v * der(v,T), with v = 1/d, at constant pressure p.

Extends from Modelica.Media.Air.ReferenceMoistAir.isobaricExpansionCoefficient (Return overall the isobaric expansion coefficient beta).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`IsobaricExpansionCoefficient`	`beta`	Isobaric expansion coefficient

Partial Function Modelica.Media.Air.ReferenceMoistAir.isothermalCompressibility
Return overall the isothermal compressibility factor

Information


kappa is defined as - 1/v * der(v,p), with v = 1/d at constant temperature T.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`IsothermalCompressibility`	`kappa`	Isothermal compressibility

Partial Function Modelica.Media.Air.ReferenceMoistAir.kappa
Alias of isothermalCompressibility for user convenience

Information


kappa is defined as - 1/v * der(v,p), with v = 1/d at constant temperature T.

Extends from Modelica.Media.Air.ReferenceMoistAir.isothermalCompressibility (Return overall the isothermal compressibility factor).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`IsothermalCompressibility`	`kappa`	Isothermal compressibility

Partial Function Modelica.Media.Air.ReferenceMoistAir.density_derp_h
Return density derivative w.r.t. pressure at const specific enthalpy

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`DerDensityByPressure`	`ddph`	Density derivative w.r.t. pressure

Partial Function Modelica.Media.Air.ReferenceMoistAir.density_derh_p
Return density derivative w.r.t. specific enthalpy at constant pressure

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`DerDensityByEnthalpy`	`ddhp`	Density derivative w.r.t. specific enthalpy

Partial Function Modelica.Media.Air.ReferenceMoistAir.density_derp_T
Return density derivative w.r.t. pressure at const temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`DerDensityByPressure`	`ddpT`	Density derivative w.r.t. pressure

Partial Function Modelica.Media.Air.ReferenceMoistAir.density_derT_p
Return density derivative w.r.t. temperature at constant pressure

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`DerDensityByTemperature`	`ddTp`	Density derivative w.r.t. temperature

Partial Function Modelica.Media.Air.ReferenceMoistAir.density_derX
Return density derivative w.r.t. mass fraction

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`Density`	`dddX[nX]`	Derivative of density w.r.t. mass fraction

Function Modelica.Media.Air.ReferenceMoistAir.molarMass
Return the molar mass of the medium

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialRealCondensingGases.molarMass (Return the molar mass of the medium).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`MolarMass`	`MM`	Mixture molar mass

Function Modelica.Media.Air.ReferenceMoistAir.specificEnthalpy_pTX
Return specific enthalpy from p, T, and X or Xi

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`AbsolutePressure`	`p`	Pressure
`Temperature`	`T`	Temperature
`MassFraction`	`X[:]`	Mass fractions

Outputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Specific enthalpy

Function Modelica.Media.Air.ReferenceMoistAir.specificEntropy_pTX
Return specific enthalpy from p, T, and X or Xi

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`AbsolutePressure`	`p`	Pressure
`Temperature`	`T`	Temperature
`MassFraction`	`X[:]`	Mass fractions

Outputs

Type	Name	Description
`SpecificEntropy`	`s`	Specific entropy

Function Modelica.Media.Air.ReferenceMoistAir.density_pTX
Return density from p, T, and X or Xi

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`AbsolutePressure`	`p`	Pressure
`Temperature`	`T`	Temperature
`MassFraction`	`X[:]`	Mass fractions

Outputs

Type	Name	Description
`Density`	`d`	Density

Function Modelica.Media.Air.ReferenceMoistAir.temperature_phX
Return temperature from p, h, and X or Xi

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`AbsolutePressure`	`p`	Pressure
`SpecificEnthalpy`	`h`	Specific enthalpy
`MassFraction`	`X[:]`	Mass fractions

Outputs

Type	Name	Description
`Temperature`	`T`	Temperature

Function Modelica.Media.Air.ReferenceMoistAir.density_phX
Return density from p, h, and X or Xi

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`AbsolutePressure`	`p`	Pressure
`SpecificEnthalpy`	`h`	Specific enthalpy
`MassFraction`	`X[:]`	Mass fractions

Outputs

Type	Name	Description
`Density`	`d`	Density

Function Modelica.Media.Air.ReferenceMoistAir.temperature_psX
Return temperature from p,s, and X or Xi

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`AbsolutePressure`	`p`	Pressure
`SpecificEntropy`	`s`	Specific entropy
`MassFraction`	`X[:]`	Mass fractions

Outputs

Type	Name	Description
`Temperature`	`T`	Temperature

Function Modelica.Media.Air.ReferenceMoistAir.density_psX
Return density from p, s, and X or Xi

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`AbsolutePressure`	`p`	Pressure
`SpecificEntropy`	`s`	Specific entropy
`MassFraction`	`X[:]`	Mass fractions

Outputs

Type	Name	Description
`Density`	`d`	Density

Function Modelica.Media.Air.ReferenceMoistAir.specificEnthalpy_psX
Return specific enthalpy from p, s, and X or Xi

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`AbsolutePressure`	`p`	Pressure
`SpecificEntropy`	`s`	Specific entropy
`MassFraction`	`X[:]`	Mass fractions

Outputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Specific enthalpy

Type Modelica.Media.Air.ReferenceMoistAir.MassFlowRate
Type for mass flow rate with medium specific attributes

Extends from Modelica.SIunits.MassFlowRate.

Attributes

Name	Value
`quantity`	`"MassFlowRate." + mediumName`
`unit`	`"kg/s"`
`min`	`-100000`
`max`	`100000`
`start`	`0.`

Function Modelica.Media.Air.ReferenceMoistAir.gasConstant
Return ideal gas constant as a function from thermodynamic state, only valid for phi<1

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialRealCondensingGases.gasConstant (Return the gas constant of the mixture (also for liquids)).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state

Outputs

Type	Name	Description
`SpecificHeatCapacity`	`R`	Mixture gas constant

Function Modelica.Media.Air.ReferenceMoistAir.moleToMassFractions
Return mass fractions X from mole fractions

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`MoleFraction`	`moleFractions[:]`	Mole fractions of mixture
`MolarMass`	`MMX[:]`	Molar masses of components

Outputs

Type	Name	Description
`MassFraction`	`X[size(moleFractions, 1)]`	Mass fractions of gas mixture

Function Modelica.Media.Air.ReferenceMoistAir.massToMoleFractions
Return mole fractions from mass fractions X

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`MassFraction`	`X[:]`	Mass fractions of mixture
`MolarMass`	`MMX[:]`	Molar masses of components

Outputs

Type	Name	Description
`MoleFraction`	`moleFractions[size(X, 1)]`	Mole fractions of gas mixture

Function Modelica.Media.Air.ReferenceMoistAir.saturationPressure
Return saturation pressure of condensing fluid

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialRealCondensingGases.saturationPressure (Return saturation pressure of condensing fluid).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`AbsolutePressure`	`psat`	Saturation pressure

Function Modelica.Media.Air.ReferenceMoistAir.saturationTemperature
Return saturation temperature of condensing fluid

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialRealCondensingGases.saturationTemperature (Return saturation temperature of condensing fluid).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`Temperature`	`Tsat`	Saturation temperature

Function Modelica.Media.Air.ReferenceMoistAir.massFractionSaturation
Return saturation mass fractions

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialRealCondensingGases.massFractionSaturation (Return saturation mass fractions).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`MassFraction`	`Xsat[:]`	Saturation mass fractions

Function Modelica.Media.Air.ReferenceMoistAir.massFraction_pTphi
Return mass fractions as a function of pressure, temperature and relative humidity

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialRealCondensingGases.massFraction_pTphi (Return mass fractions as a function of pressure, temperature and relative humidity).

Inputs

Type	Name	Description
`AbsolutePressure`	`p`	Pressure
`Temperature`	`T`	Temperature
`Real`	`phi`	Relative humidity

Outputs

Type	Name	Description
`MassFraction`	`X[:]`	Mass fractions

Function Modelica.Media.Air.ReferenceMoistAir.relativeHumidity
Return relative humidity

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialRealCondensingGases.relativeHumidity (Return relative humidity).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`Real`	`phi`	Relative humidity

Function Modelica.Media.Air.ReferenceMoistAir.enthalpyOfVaporization
Return enthalpy of vaporization of water

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialRealCondensingGases.enthalpyOfVaporization (Return vaporization enthalpy of condensing fluid).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`SpecificEnthalpy`	`r0`	Vaporization enthalpy

Function Modelica.Media.Air.ReferenceMoistAir.enthalpyOfLiquid
Return enthalpy of liquid water

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialRealCondensingGases.enthalpyOfLiquid (Return liquid enthalpy of condensing fluid).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Liquid enthalpy

Function Modelica.Media.Air.ReferenceMoistAir.enthalpyOfGas
Return specific enthalpy of gas (air and steam)

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialRealCondensingGases.enthalpyOfGas (Return enthalpy of non-condensing gas mixture).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Specific enthalpy

Function Modelica.Media.Air.ReferenceMoistAir.enthalpyOfCondensingGas
Return specific enthalpy of steam

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialRealCondensingGases.enthalpyOfCondensingGas (Return enthalpy of condensing gas (most often steam)).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Specific enthalpy

Function Modelica.Media.Air.ReferenceMoistAir.enthalpyOfNonCondensingGas
Return specific enthalpy of dry air

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialRealCondensingGases.enthalpyOfNonCondensingGas (Return enthalpy of the non-condensing species).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Specific enthalpy

Partial Function Modelica.Media.Air.ReferenceMoistAir.specificEntropy_phX
Return specific entropy as a function of pressure, specific enthalpy and mass fractions

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`AbsolutePressure`	`p`	Pressure
`SpecificEnthalpy`	`h`	Specific enthalpy
`MassFraction`	`X[:]`	Mass fractions

Outputs

Type	Name	Description
`SpecificEntropy`	`s`	Specific entropy

Function Modelica.Media.Air.ReferenceMoistAir.Xsaturation
Return absolute humitity per unit mass of moist air at saturation as a function of the thermodynamic state record

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`MassFraction`	`X_sat`	Steam mass fraction of sat. boundary

Function Modelica.Media.Air.ReferenceMoistAir.xsaturation
Return absolute humitity per unit mass of dry air at saturation as a function of the thermodynamic state record

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`MassFraction`	`x_sat`	Absolute humidity per unit mass of dry air

Function Modelica.Media.Air.ReferenceMoistAir.massFractionWaterVapor
Return mass fraction of water vapor

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`MassFraction`	`X`	Mass fraction of water vapor

Function Modelica.Media.Air.ReferenceMoistAir.massFractionWaterNonVapor
Return mass fraction of liquid and solid water

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`MassFraction`	`X`	Mass fraction of water varpor

Function Modelica.Media.Air.ReferenceMoistAir.massFractionSaturation_ppsat
Return mass fvraction at saturation boundary given pressure and saturation pressure

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`AbsolutePressure`	`p`	Ambient pressure
`AbsolutePressure`	`psat`	Saturation pressure

Outputs

Type	Name	Description
`MassFraction`	`X[:]`	Mass fraction

Function Modelica.Media.Air.ReferenceMoistAir.massFraction_waterContent
Return mass fractions as a function of pressure, temperature and absolute humidity in kg(water)/kg(dry air)

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Real`	`xw`	Water content in kg(water)/kg(dry air)

Outputs

Type	Name	Description
`MassFraction`	`X[:]`	Mass fractions

Function Modelica.Media.Air.ReferenceMoistAir.waterContent_X
Return water content in kg(water)/kg(dry air) given mass fractions

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`MassFraction`	`X[:]`	Mass fractions

Outputs

Type	Name	Description
`Real`	`xw`	Water content in kg(water)/kg(dry air)

Function Modelica.Media.Air.ReferenceMoistAir.saturationPressureLiquid
Return saturation pressure of water as a function of temperature T

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`AbsolutePressure`	`psat`	Saturation pressure

Function Modelica.Media.Air.ReferenceMoistAir.sublimationPressureIce
Return sublimation pressure of water as a function of temperature T between 223.16 and 273.16 K

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`AbsolutePressure`	`psat`	Sublimation pressure

Function Modelica.Media.Air.ReferenceMoistAir.enthalpyOfDryAir
Return specific enthalpy of dry air

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Air.ReferenceMoistAir.enthalpyOfNonCondensingGas (Return specific enthalpy of dry air).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Specific enthalpy

Function Modelica.Media.Air.ReferenceMoistAir.enthalpyOfWater
Return specific enthalpy of water (solid + liquid + steam)

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Specific enthalpy of water

Function Modelica.Media.Air.ReferenceMoistAir.enthalpyOfWaterVapor
Return specific enthalpy of steam

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Air.ReferenceMoistAir.enthalpyOfCondensingGas (Return specific enthalpy of steam).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Specific enthalpy

Function Modelica.Media.Air.ReferenceMoistAir.enthalpyOfWaterNonVapor
Return enthalpy of liquid and solid water

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Specific enthalpy of water

Package Modelica.​Media.​Air.​ReferenceMoistAirReferenceMoistAir: Detailed moist air model (143.15 ... 2000 K)

Information

Restriction

Usage

Calculation algorithms

Nomenclature

Unsaturated and saturated humid air (0 ≤ xw ≤ xws)

Supersaturated humid air (liquid fog and ice fog)

Saturation pressure of water in moist air

Dissociation

References

References

Verification

Acknowledgment

Package Contents

Package Constants

Type Modelica.​Media.​Air.​ReferenceMoistAir.​AbsolutePressureType for absolute pressure with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceMoistAir.​DensityType for density with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceMoistAir.​DynamicViscosityType for dynamic viscosity with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceMoistAir.​EnthalpyFlowRateType for enthalpy flow rate with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceMoistAir.​MassFractionType for mass fraction with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceMoistAir.​MoleFractionType for mole fraction with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceMoistAir.​MolarMassType for molar mass with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceMoistAir.​MolarVolumeType for molar volume with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceMoistAir.​IsentropicExponentType for isentropic exponent with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceMoistAir.​SpecificEnergyType for specific energy with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceMoistAir.​SpecificInternalEnergyType for specific internal energy with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceMoistAir.​SpecificEnthalpyType for specific enthalpy with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceMoistAir.​SpecificEntropyType for specific entropy with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceMoistAir.​SpecificHeatCapacityType for specific heat capacity with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceMoistAir.​SurfaceTensionType for surface tension with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceMoistAir.​TemperatureType for temperature with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceMoistAir.​ThermalConductivityType for thermal conductivity with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceMoistAir.​PrandtlNumberType for Prandtl number with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceMoistAir.​VelocityOfSoundType for velocity of sound with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceMoistAir.​ExtraPropertyType for unspecified, mass-specific property transported by flow

Attributes

Type Modelica.​Media.​Air.​ReferenceMoistAir.​CumulativeExtraPropertyType for conserved integral of unspecified, mass specific property

Attributes

Type Modelica.​Media.​Air.​ReferenceMoistAir.​ExtraPropertyFlowRateType for flow rate of unspecified, mass-specific property

Attributes

Type Modelica.​Media.​Air.​ReferenceMoistAir.​IsobaricExpansionCoefficientType for isobaric expansion coefficient with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceMoistAir.​DipoleMomentType for dipole moment with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceMoistAir.​DerDensityByPressureType for partial derivative of density with respect to pressure with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceMoistAir.​DerDensityByEnthalpyType for partial derivative of density with respect to enthalpy with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceMoistAir.​DerEnthalpyByPressureType for partial derivative of enthalpy with respect to pressure with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceMoistAir.​DerDensityByTemperatureType for partial derivative of density with respect to temperature with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceMoistAir.​DerTemperatureByPressureType for partial derivative of temperature with respect to pressure with medium specific attributes

Attributes

Record Modelica.​Media.​Air.​ReferenceMoistAir.​SaturationPropertiesSaturation properties of two phase medium

Information

Fields

Record Modelica.​Media.​Air.​ReferenceMoistAir.​FluidLimitsValidity limits for fluid model

Information

Fields

Package Modelica.Media.Air.ReferenceMoistAir
ReferenceMoistAir: Detailed moist air model (143.15 ... 2000 K)

Unsaturated and saturated humid air (0 ≤ x_w ≤ x_ws)

Type Modelica.Media.Air.ReferenceMoistAir.AbsolutePressure
Type for absolute pressure with medium specific attributes

Type Modelica.Media.Air.ReferenceMoistAir.Density
Type for density with medium specific attributes

Type Modelica.Media.Air.ReferenceMoistAir.DynamicViscosity
Type for dynamic viscosity with medium specific attributes

Type Modelica.Media.Air.ReferenceMoistAir.EnthalpyFlowRate
Type for enthalpy flow rate with medium specific attributes

Type Modelica.Media.Air.ReferenceMoistAir.MassFraction
Type for mass fraction with medium specific attributes

Type Modelica.Media.Air.ReferenceMoistAir.MoleFraction
Type for mole fraction with medium specific attributes

Type Modelica.Media.Air.ReferenceMoistAir.MolarMass
Type for molar mass with medium specific attributes

Type Modelica.Media.Air.ReferenceMoistAir.MolarVolume
Type for molar volume with medium specific attributes

Type Modelica.Media.Air.ReferenceMoistAir.IsentropicExponent
Type for isentropic exponent with medium specific attributes

Type Modelica.Media.Air.ReferenceMoistAir.SpecificEnergy
Type for specific energy with medium specific attributes

Type Modelica.Media.Air.ReferenceMoistAir.SpecificInternalEnergy
Type for specific internal energy with medium specific attributes

Type Modelica.Media.Air.ReferenceMoistAir.SpecificEnthalpy
Type for specific enthalpy with medium specific attributes

Type Modelica.Media.Air.ReferenceMoistAir.SpecificEntropy
Type for specific entropy with medium specific attributes

Type Modelica.Media.Air.ReferenceMoistAir.SpecificHeatCapacity
Type for specific heat capacity with medium specific attributes

Type Modelica.Media.Air.ReferenceMoistAir.SurfaceTension
Type for surface tension with medium specific attributes

Type Modelica.Media.Air.ReferenceMoistAir.Temperature
Type for temperature with medium specific attributes

Type Modelica.Media.Air.ReferenceMoistAir.ThermalConductivity
Type for thermal conductivity with medium specific attributes

Type Modelica.Media.Air.ReferenceMoistAir.PrandtlNumber
Type for Prandtl number with medium specific attributes

Type Modelica.Media.Air.ReferenceMoistAir.VelocityOfSound
Type for velocity of sound with medium specific attributes

Type Modelica.Media.Air.ReferenceMoistAir.ExtraProperty
Type for unspecified, mass-specific property transported by flow

Type Modelica.Media.Air.ReferenceMoistAir.CumulativeExtraProperty
Type for conserved integral of unspecified, mass specific property

Type Modelica.Media.Air.ReferenceMoistAir.ExtraPropertyFlowRate
Type for flow rate of unspecified, mass-specific property

Type Modelica.Media.Air.ReferenceMoistAir.IsobaricExpansionCoefficient
Type for isobaric expansion coefficient with medium specific attributes

Type Modelica.Media.Air.ReferenceMoistAir.DipoleMoment
Type for dipole moment with medium specific attributes

Type Modelica.Media.Air.ReferenceMoistAir.DerDensityByPressure
Type for partial derivative of density with respect to pressure with medium specific attributes

Type Modelica.Media.Air.ReferenceMoistAir.DerDensityByEnthalpy
Type for partial derivative of density with respect to enthalpy with medium specific attributes

Type Modelica.Media.Air.ReferenceMoistAir.DerEnthalpyByPressure
Type for partial derivative of enthalpy with respect to pressure with medium specific attributes

Type Modelica.Media.Air.ReferenceMoistAir.DerDensityByTemperature
Type for partial derivative of density with respect to temperature with medium specific attributes

Type Modelica.Media.Air.ReferenceMoistAir.DerTemperatureByPressure
Type for partial derivative of temperature with respect to pressure with medium specific attributes

Record Modelica.Media.Air.ReferenceMoistAir.SaturationProperties
Saturation properties of two phase medium

Record Modelica.Media.Air.ReferenceMoistAir.FluidLimits
Validity limits for fluid model

Type Modelica.Media.Air.ReferenceMoistAir.FixedPhase
Phase of the fluid: 1 for 1-phase, 2 for two-phase, 0 for not known, e.g., interactive use

Record Modelica.Media.Air.ReferenceMoistAir.FluidConstants
Extended fluid constants

Record Modelica.Media.Air.ReferenceMoistAir.ThermodynamicState
ThermodynamicState record for moist air

Model Modelica.Media.Air.ReferenceMoistAir.BaseProperties
Moist air base properties record

Function Modelica.Media.Air.ReferenceMoistAir.setState_pTX
Return thermodynamic state as function of pressure p, temperature T and composition X

Function Modelica.Media.Air.ReferenceMoistAir.setState_phX
Return thermodynamic state as function of pressure p, specific enthalpy h and composition X

Function Modelica.Media.Air.ReferenceMoistAir.setState_psX
Return thermodynamic state as function of pressure p, specific enthalpy h and composition X

Function Modelica.Media.Air.ReferenceMoistAir.setState_dTX
Return thermodynamic state as function of density d, temperature T and composition X

Function Modelica.Media.Air.ReferenceMoistAir.setSmoothState
Return thermodynamic state so that it smoothly approximates: if x > 0 then state_a else state_b

Function Modelica.Media.Air.ReferenceMoistAir.dynamicViscosity
Return dynamic viscosity as a function of the thermodynamic state record, valid from 73.15 K to 373.15 K

Function Modelica.Media.Air.ReferenceMoistAir.thermalConductivity
Return thermal conductivity as a function of the thermodynamic state record, valid from 73.15 K to 373.15 K

Function Modelica.Media.Air.ReferenceMoistAir.prandtlNumber
Return the Prandtl number

Function Modelica.Media.Air.ReferenceMoistAir.pressure
Returns pressure of ideal gas as a function of the thermodynamic state record

Function Modelica.Media.Air.ReferenceMoistAir.temperature
Return temperature of ideal gas as a function of the thermodynamic state record

Function Modelica.Media.Air.ReferenceMoistAir.density
Returns density as a function of the thermodynamic state record

Function Modelica.Media.Air.ReferenceMoistAir.specificEnthalpy
Return specific enthalpy of moist air as a function of the thermodynamic state record

Function Modelica.Media.Air.ReferenceMoistAir.specificInternalEnergy
Return specific internal energy of moist air as a function of the thermodynamic state record

Function Modelica.Media.Air.ReferenceMoistAir.specificEntropy
Return specific entropy from thermodynamic state record, only valid for phi<1

Function Modelica.Media.Air.ReferenceMoistAir.specificGibbsEnergy
Return specific Gibbs energy as a function of the thermodynamic state record, only valid for phi<1