Buildings.Examples.HydronicHeating.TwoRoomsWithStorage.MediumA

Medium model for air

Package Content

Name Description
Inherited
Water=1 Index of water (in substanceNames, massFractions X, etc.)
Air=2 Index of air (in substanceNames, massFractions X, etc.)
dryair Dry air properties
steam Steam properties
k_mair=steam.MM/dryair.MM Ratio of molar weights
MMX={steam.MM,dryair.MM} Molar masses of components
pStp=reference_p Pressure for which fluid density is defined
dStp=1.2 Fluid density at pressure pStp
Buildings.Media.Air.ThermodynamicState ThermodynamicState ThermodynamicState record for moist air
Buildings.Media.Air.BaseProperties BaseProperties Base properties (p, d, T, h, u, R, MM and X and Xi) of a medium
Buildings.Media.Air.density density Gas density
Buildings.Media.Air.dynamicViscosity dynamicViscosity Return the dynamic viscosity of dry air
Buildings.Media.Air.enthalpyOfCondensingGas enthalpyOfCondensingGas Enthalpy of steam per unit mass of steam
Buildings.Media.Air.enthalpyOfGas enthalpyOfGas Enthalpy of gas mixture per unit mass of gas mixture
Buildings.Media.Air.enthalpyOfLiquid enthalpyOfLiquid Enthalpy of liquid (per unit mass of liquid) which is linear in the temperature
Buildings.Media.Air.enthalpyOfNonCondensingGas enthalpyOfNonCondensingGas Enthalpy of non-condensing gas per unit mass of steam
Buildings.Media.Air.enthalpyOfVaporization enthalpyOfVaporization Enthalpy of vaporization of water
Buildings.Media.Air.gasConstant gasConstant Return ideal gas constant as a function from thermodynamic state, only valid for phi<1
Buildings.Media.Air.pressure pressure Returns pressure of ideal gas as a function of the thermodynamic state record
Buildings.Media.Air.isobaricExpansionCoefficient isobaricExpansionCoefficient Isobaric expansion coefficient beta
Buildings.Media.Air.isothermalCompressibility isothermalCompressibility Isothermal compressibility factor
Buildings.Media.Air.saturationPressure saturationPressure Saturation curve valid for 223.16 <= T <= 373.16 (and slightly outside with less accuracy)
Buildings.Media.Air.specificEntropy specificEntropy Return the specific entropy, only valid for phi<1
Buildings.Media.Air.density_derp_T density_derp_T Return the partial derivative of density with respect to pressure at constant temperature
Buildings.Media.Air.density_derT_p density_derT_p Return the partial derivative of density with respect to temperature at constant pressure
Buildings.Media.Air.density_derX density_derX Return the partial derivative of density with respect to mass fractions at constant pressure and temperature
Buildings.Media.Air.specificHeatCapacityCp specificHeatCapacityCp Specific heat capacity of gas mixture at constant pressure
Buildings.Media.Air.specificHeatCapacityCv specificHeatCapacityCv Specific heat capacity of gas mixture at constant volume
Buildings.Media.Air.setState_dTX setState_dTX Return thermodynamic state as function of density d, temperature T and composition X
Buildings.Media.Air.setState_phX setState_phX Return thermodynamic state as function of pressure p, specific enthalpy h and composition X
Buildings.Media.Air.setState_pTX setState_pTX Return thermodynamic state as function of p, T and composition X or Xi
Buildings.Media.Air.setState_psX setState_psX Return the thermodynamic state as function of p, s and composition X or Xi
Buildings.Media.Air.specificEnthalpy specificEnthalpy Compute specific enthalpy from pressure, temperature and mass fraction
Buildings.Media.Air.specificEnthalpy_pTX specificEnthalpy_pTX Specific enthalpy
Buildings.Media.Air.specificGibbsEnergy specificGibbsEnergy Specific Gibbs energy
Buildings.Media.Air.specificHelmholtzEnergy specificHelmholtzEnergy Specific Helmholtz energy
Buildings.Media.Air.isentropicEnthalpy isentropicEnthalpy Return the isentropic enthalpy
Buildings.Media.Air.specificInternalEnergy specificInternalEnergy Specific internal energy
Buildings.Media.Air.temperature temperature Return temperature of ideal gas as a function of the thermodynamic state record
Buildings.Media.Air.molarMass molarMass Return the molar mass
Buildings.Media.Air.temperature_phX temperature_phX Compute temperature from specific enthalpy and mass fraction
Buildings.Media.Air.thermalConductivity thermalConductivity Thermal conductivity of dry air as a polynomial in the temperature
Buildings.Media.Air.GasProperties GasProperties Coefficient data record for properties of perfect gases
h_fg=Buildings.Utilities.Psychrometrics.Constants.h_fg Latent heat of evaporation of water
cpWatLiq=Buildings.Utilities.Psychrometrics.Constants.cpWatLiq Specific heat capacity of liquid water
Buildings.Media.Air.der_enthalpyOfLiquid der_enthalpyOfLiquid Temperature derivative of enthalpy of liquid per unit mass of liquid
Buildings.Media.Air.der_enthalpyOfCondensingGas der_enthalpyOfCondensingGas Derivative of enthalpy of steam per unit mass of steam
Buildings.Media.Air.enthalpyOfDryAir enthalpyOfDryAir Enthalpy of dry air per unit mass of dry air
Buildings.Media.Air.der_enthalpyOfDryAir der_enthalpyOfDryAir Derivative of enthalpy of dry air per unit mass of dry air
Buildings.Media.Air.der_enthalpyOfNonCondensingGas der_enthalpyOfNonCondensingGas Derivative of enthalpy of non-condensing gas per unit mass of steam
Buildings.Media.Air.der_specificHeatCapacityCp der_specificHeatCapacityCp Derivative of specific heat capacity of gas mixture at constant pressure
Buildings.Media.Air.der_specificHeatCapacityCv der_specificHeatCapacityCv Derivative of specific heat capacity of gas mixture at constant volume
fluidConstants={Modelica.Media.IdealGases.Common.FluidData.H2O,Modelica.Media.IdealGases.Common.FluidData.N2} Constant data for the fluid
Modelica.Media.Interfaces.PartialMixtureMedium.moleToMassFractions moleToMassFractions Return mass fractions X from mole fractions
Modelica.Media.Interfaces.PartialMixtureMedium.massToMoleFractions massToMoleFractions Return mole fractions from mass fractions X
ThermoStates=Modelica.Media.Interfaces.Choices.IndependentVariables.pTX Enumeration type for independent variables
mediumName="Air" Name of the medium
substanceNames={"water","air"} Names of the mixture substances. Set substanceNames={mediumName} if only one substance.
extraPropertiesNames=fill("", 0) Names of the additional (extra) transported properties. Set extraPropertiesNames=fill("",0) if unused
singleState=false = true, if u and d are not a function of pressure
reducedX=true = true if medium contains the equation sum(X) = 1.0; set reducedX=true if only one substance (see docu for details)
fixedX=false = true if medium contains the equation X = reference_X
reference_p=101325 Reference pressure of Medium: default 1 atmosphere
reference_T=273.15 Reference temperature of Medium: default 25 deg Celsius
reference_X={0.01,0.99} Default mass fractions of medium
p_default=101325 Default value for pressure of medium (for initialization)
T_default=293.15 Default value for temperature of medium (for initialization)
h_default=specificEnthalpy_pTX(p_default, T_default, X_default) Default value for specific enthalpy of medium (for initialization)
X_default=reference_X Default value for mass fractions of medium (for initialization)
C_default=fill(0, nC) Default value for trace substances of medium (for initialization)
nS=size(substanceNames, 1) Number of substances
nX=nS Number of mass fractions
nXi=if fixedX then 0 else if reducedX then nS - 1 else nS Number of structurally independent mass fractions (see docu for details)
nC=size(extraPropertiesNames, 1) Number of extra (outside of standard mass-balance) transported properties
C_nominal=1.0e-6*ones(nC) Default for the nominal values for the extra properties
Modelica.Media.Interfaces.PartialMedium.FluidConstants FluidConstants Critical, triple, molecular and other standard data of fluid
Modelica.Media.Interfaces.PartialMedium.setSmoothState setSmoothState Return thermodynamic state so that it smoothly approximates: if x > 0 then state_a else state_b
Modelica.Media.Interfaces.PartialMedium.prandtlNumber prandtlNumber Return the Prandtl number
Modelica.Media.Interfaces.PartialMedium.heatCapacity_cp heatCapacity_cp Alias for deprecated name
Modelica.Media.Interfaces.PartialMedium.heatCapacity_cv heatCapacity_cv Alias for deprecated name
Modelica.Media.Interfaces.PartialMedium.isentropicExponent isentropicExponent Return isentropic exponent
Modelica.Media.Interfaces.PartialMedium.velocityOfSound velocityOfSound Return velocity of sound
Modelica.Media.Interfaces.PartialMedium.beta beta Alias for isobaricExpansionCoefficient for user convenience
Modelica.Media.Interfaces.PartialMedium.kappa kappa Alias of isothermalCompressibility for user convenience
Modelica.Media.Interfaces.PartialMedium.density_derp_h density_derp_h Return density derivative w.r.t. pressure at const specific enthalpy
Modelica.Media.Interfaces.PartialMedium.density_derh_p density_derh_p Return density derivative w.r.t. specific enthalpy at constant pressure
Modelica.Media.Interfaces.PartialMedium.specificEntropy_pTX specificEntropy_pTX Return specific enthalpy from p, T, and X or Xi
Modelica.Media.Interfaces.PartialMedium.density_pTX density_pTX Return density from p, T, and X or Xi
Modelica.Media.Interfaces.PartialMedium.density_phX density_phX Return density from p, h, and X or Xi
Modelica.Media.Interfaces.PartialMedium.temperature_psX temperature_psX Return temperature from p,s, and X or Xi
Modelica.Media.Interfaces.PartialMedium.density_psX density_psX Return density from p, s, and X or Xi
Modelica.Media.Interfaces.PartialMedium.specificEnthalpy_psX specificEnthalpy_psX Return specific enthalpy from p, s, and X or Xi
Modelica.Media.Interfaces.PartialMedium.MassFlowRate MassFlowRate Type for mass flow rate with medium specific attributes
Modelica.Media.Interfaces.Types.AbsolutePressure AbsolutePressure Type for absolute pressure with medium specific attributes
Modelica.Media.Interfaces.Types.Density Density Type for density with medium specific attributes
Modelica.Media.Interfaces.Types.DynamicViscosity DynamicViscosity Type for dynamic viscosity with medium specific attributes
Modelica.Media.Interfaces.Types.EnthalpyFlowRate EnthalpyFlowRate Type for enthalpy flow rate with medium specific attributes
Modelica.Media.Interfaces.Types.MassFraction MassFraction Type for mass fraction with medium specific attributes
Modelica.Media.Interfaces.Types.MoleFraction MoleFraction Type for mole fraction with medium specific attributes
Modelica.Media.Interfaces.Types.MolarMass MolarMass Type for molar mass with medium specific attributes
Modelica.Media.Interfaces.Types.MolarVolume MolarVolume Type for molar volume with medium specific attributes
Modelica.Media.Interfaces.Types.IsentropicExponent IsentropicExponent Type for isentropic exponent with medium specific attributes
Modelica.Media.Interfaces.Types.SpecificEnergy SpecificEnergy Type for specific energy with medium specific attributes
Modelica.Media.Interfaces.Types.SpecificInternalEnergy SpecificInternalEnergy Type for specific internal energy with medium specific attributes
Modelica.Media.Interfaces.Types.SpecificEnthalpy SpecificEnthalpy Type for specific enthalpy with medium specific attributes
Modelica.Media.Interfaces.Types.SpecificEntropy SpecificEntropy Type for specific entropy with medium specific attributes
Modelica.Media.Interfaces.Types.SpecificHeatCapacity SpecificHeatCapacity Type for specific heat capacity with medium specific attributes
Modelica.Media.Interfaces.Types.SurfaceTension SurfaceTension Type for surface tension with medium specific attributes
Modelica.Media.Interfaces.Types.Temperature Temperature Type for temperature with medium specific attributes
Modelica.Media.Interfaces.Types.ThermalConductivity ThermalConductivity Type for thermal conductivity with medium specific attributes
Modelica.Media.Interfaces.Types.PrandtlNumber PrandtlNumber Type for Prandtl number with medium specific attributes
Modelica.Media.Interfaces.Types.VelocityOfSound VelocityOfSound Type for velocity of sound with medium specific attributes
Modelica.Media.Interfaces.Types.ExtraProperty ExtraProperty Type for unspecified, mass-specific property transported by flow
Modelica.Media.Interfaces.Types.CumulativeExtraProperty CumulativeExtraProperty Type for conserved integral of unspecified, mass specific property
Modelica.Media.Interfaces.Types.ExtraPropertyFlowRate ExtraPropertyFlowRate Type for flow rate of unspecified, mass-specific property
Modelica.Media.Interfaces.Types.IsobaricExpansionCoefficient IsobaricExpansionCoefficient Type for isobaric expansion coefficient with medium specific attributes
Modelica.Media.Interfaces.Types.DipoleMoment DipoleMoment Type for dipole moment with medium specific attributes
Modelica.Media.Interfaces.Types.DerDensityByPressure DerDensityByPressure Type for partial derivative of density with respect to pressure with medium specific attributes
Modelica.Media.Interfaces.Types.DerDensityByEnthalpy DerDensityByEnthalpy Type for partial derivative of density with respect to enthalpy with medium specific attributes
Modelica.Media.Interfaces.Types.DerEnthalpyByPressure DerEnthalpyByPressure Type for partial derivative of enthalpy with respect to pressure with medium specific attributes
Modelica.Media.Interfaces.Types.DerDensityByTemperature DerDensityByTemperature Type for partial derivative of density with respect to temperature with medium specific attributes
Modelica.Media.Interfaces.Types.DerTemperatureByPressure DerTemperatureByPressure Type for partial derivative of temperature with respect to pressure with medium specific attributes
Modelica.Media.Interfaces.Types.SaturationProperties SaturationProperties Saturation properties of two phase medium
Modelica.Media.Interfaces.Types.FluidLimits FluidLimits Validity limits for fluid model
Modelica.Media.Interfaces.Types.FixedPhase FixedPhase Phase of the fluid: 1 for 1-phase, 2 for two-phase, 0 for not known, e.g., interactive use
Modelica.Media.Interfaces.Types.Basic Basic The most basic version of a record used in several degrees of detail
Modelica.Media.Interfaces.Types.IdealGas IdealGas The ideal gas version of a record used in several degrees of detail
Modelica.Media.Interfaces.Types.TwoPhase TwoPhase The two phase fluid version of a record used in several degrees of detail