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 |
 ThermodynamicState
|
ThermodynamicState record for moist air |
 BaseProperties
|
Base properties (p, d, T, h, u, R, MM and X and Xi) of a medium |
 density
|
Gas density |
| dynamicViscosity
|
Return the dynamic viscosity of dry air |
| enthalpyOfCondensingGas
|
Enthalpy of steam per unit mass of steam |
| enthalpyOfGas
|
Enthalpy of gas mixture per unit mass of gas mixture |
| enthalpyOfLiquid
|
Enthalpy of liquid (per unit mass of liquid) which is linear in the temperature |
| enthalpyOfNonCondensingGas
|
Enthalpy of non-condensing gas per unit mass of steam |
| enthalpyOfVaporization
|
Enthalpy of vaporization of water |
| gasConstant
|
Return ideal gas constant as a function from thermodynamic state, only valid for phi<1 |
| pressure
|
Returns pressure of ideal gas as a function of the thermodynamic state record |
| isobaricExpansionCoefficient
|
Isobaric expansion coefficient beta |
| isothermalCompressibility
|
Isothermal compressibility factor |
| saturationPressure
|
Saturation curve valid for 223.16 <= T <= 373.16 (and slightly outside with less accuracy) |
| specificEntropy
|
Return the specific entropy, only valid for phi<1 |
| density_derp_T
|
Return the partial derivative of density with respect to pressure at constant temperature |
| density_derT_p
|
Return the partial derivative of density with respect to temperature at constant pressure |
| density_derX
|
Return the partial derivative of density with respect to mass fractions at constant pressure and temperature |
| specificHeatCapacityCp
|
Specific heat capacity of gas mixture at constant pressure |
| specificHeatCapacityCv
|
Specific heat capacity of gas mixture at constant volume |
| 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_pTX
|
Return thermodynamic state as function of p, T and composition X or Xi |
| setState_psX
|
Return the thermodynamic state as function of p, s and composition X or Xi |
| specificEnthalpy
|
Compute specific enthalpy from pressure, temperature and mass fraction |
| specificEnthalpy_pTX
|
Specific enthalpy |
| specificGibbsEnergy
|
Specific Gibbs energy |
| specificHelmholtzEnergy
|
Specific Helmholtz energy |
| isentropicEnthalpy
|
Return the isentropic enthalpy |
 specificInternalEnergy
|
Specific internal energy |
| temperature
|
Return temperature of ideal gas as a function of the thermodynamic state record |
| molarMass
|
Return the molar mass |
| temperature_phX
|
Compute temperature from specific enthalpy and mass fraction |
| thermalConductivity
|
Thermal conductivity of dry air as a polynomial in the temperature |
| 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 |
| der_enthalpyOfLiquid
|
Temperature derivative of enthalpy of liquid per unit mass of liquid |
| der_enthalpyOfCondensingGas
|
Derivative of enthalpy of steam per unit mass of steam |
| enthalpyOfDryAir
|
Enthalpy of dry air per unit mass of dry air |
| der_enthalpyOfDryAir
|
Derivative of enthalpy of dry air per unit mass of dry air |
| der_enthalpyOfNonCondensingGas
|
Derivative of enthalpy of non-condensing gas per unit mass of steam |
| der_specificHeatCapacityCp
|
Derivative of specific heat capacity of gas mixture at constant pressure |
| 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 |
| moleToMassFractions
|
Return mass fractions X from mole fractions |
| 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 |
| FluidConstants
|
Critical, triple, molecular and other standard data of fluid |
| setSmoothState
|
Return thermodynamic state so that it smoothly approximates: if x > 0 then state_a else state_b |
| prandtlNumber
|
Return the Prandtl number |
| heatCapacity_cp
|
Alias for deprecated name |
| heatCapacity_cv
|
Alias for deprecated name |
| isentropicExponent
|
Return isentropic exponent |
| velocityOfSound
|
Return velocity of sound |
| beta
|
Alias for isobaricExpansionCoefficient for user convenience |
| kappa
|
Alias of isothermalCompressibility for user convenience |
| density_derp_h
|
Return density derivative w.r.t. pressure at const specific enthalpy |
| density_derh_p
|
Return density derivative w.r.t. specific enthalpy at constant pressure |
| specificEntropy_pTX
|
Return specific enthalpy from p, T, and X or Xi |
| density_pTX
|
Return density from p, T, and X or Xi |
| density_phX
|
Return density from p, h, and X or Xi |
| temperature_psX
|
Return temperature from p,s, and X or Xi |
| density_psX
|
Return density from p, s, and X or Xi |
| specificEnthalpy_psX
|
Return specific enthalpy from p, s, and X or Xi |
 MassFlowRate
|
Type for mass flow rate with medium specific attributes |
| AbsolutePressure
|
Type for absolute pressure with medium specific attributes |
| Density
|
Type for density with medium specific attributes |
| DynamicViscosity
|
Type for dynamic viscosity with medium specific attributes |
| EnthalpyFlowRate
|
Type for enthalpy flow rate with medium specific attributes |
| MassFraction
|
Type for mass fraction with medium specific attributes |
| MoleFraction
|
Type for mole fraction with medium specific attributes |
| MolarMass
|
Type for molar mass with medium specific attributes |
| MolarVolume
|
Type for molar volume with medium specific attributes |
| IsentropicExponent
|
Type for isentropic exponent with medium specific attributes |
| SpecificEnergy
|
Type for specific energy with medium specific attributes |
| SpecificInternalEnergy
|
Type for specific internal energy with medium specific attributes |
| SpecificEnthalpy
|
Type for specific enthalpy with medium specific attributes |
| SpecificEntropy
|
Type for specific entropy with medium specific attributes |
| SpecificHeatCapacity
|
Type for specific heat capacity with medium specific attributes |
| SurfaceTension
|
Type for surface tension with medium specific attributes |
| Temperature
|
Type for temperature with medium specific attributes |
| ThermalConductivity
|
Type for thermal conductivity with medium specific attributes |
| PrandtlNumber
|
Type for Prandtl number with medium specific attributes |
| VelocityOfSound
|
Type for velocity of sound with medium specific attributes |
| ExtraProperty
|
Type for unspecified, mass-specific property transported by flow |
| CumulativeExtraProperty
|
Type for conserved integral of unspecified, mass specific property |
| ExtraPropertyFlowRate
|
Type for flow rate of unspecified, mass-specific property |
| IsobaricExpansionCoefficient
|
Type for isobaric expansion coefficient with medium specific attributes |
| DipoleMoment
|
Type for dipole moment with medium specific attributes |
| DerDensityByPressure
|
Type for partial derivative of density with respect to pressure with medium specific attributes |
| DerDensityByEnthalpy
|
Type for partial derivative of density with respect to enthalpy with medium specific attributes |
| DerEnthalpyByPressure
|
Type for partial derivative of enthalpy with respect to pressure with medium specific attributes |
| DerDensityByTemperature
|
Type for partial derivative of density with respect to temperature with medium specific attributes |
| DerTemperatureByPressure
|
Type for partial derivative of temperature with respect to pressure with medium specific attributes |
| SaturationProperties
|
Saturation properties of two phase medium |
| FluidLimits
|
Validity limits for fluid model |
| FixedPhase
|
Phase of the fluid: 1 for 1-phase, 2 for two-phase, 0 for not known, e.g., interactive use |
 Basic
|
The most basic version of a record used in several degrees of detail |
| IdealGas
|
The ideal gas version of a record used in several degrees of detail |
| TwoPhase
|
The two phase fluid version of a record used in several degrees of detail |