Buildings.Fluid.MixingVolumes.Validation.CoupledVolumesWater.Medium
Medium model
Buildings.Fluid.MixingVolumes.Validation.MixingVolume.Medium
Medium model
Buildings.Fluid.MixingVolumes.Validation.MixingVolumeAdiabaticCooling.Medium
Medium model
Buildings.Fluid.MixingVolumes.Validation.MixingVolumeInitialization.Medium
Buildings.Fluid.MixingVolumes.Validation.MixingVolumeMassFlow.Medium
Medium model
Buildings.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass.Medium
Buildings.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstance.Medium
Medium model
Package Content
Name | Description |
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Inherited | |
Water=1 | Index of water (in substanceNames, massFractions X, etc.) |
Air=2 | Index of air (in substanceNames, massFractions X, etc.) |
pStp=reference_p | Pressure for which fluid density is defined |
dStp=1.2 | Fluid density at pressure pStp |
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ThermodynamicState record for moist air |
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Base properties |
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Gas density |
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Return the dynamic viscosity of dry air |
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Enthalpy of steam per unit mass of steam |
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Enthalpy of gas mixture per unit mass of gas mixture |
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Enthalpy of liquid (per unit mass of liquid) which is linear in the temperature |
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Enthalpy of non-condensing gas per unit mass of steam |
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Enthalpy of vaporization of water |
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Return ideal gas constant as a function from thermodynamic state, only valid for phi<1 |
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Returns pressure of ideal gas as a function of the thermodynamic state record |
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Isobaric expansion coefficient beta |
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Isothermal compressibility factor |
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Saturation curve valid for 223.16 <= T <= 373.16 (and slightly outside with less accuracy) |
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Return the specific entropy, only valid for phi<1 |
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Return the partial derivative of density with respect to pressure at constant temperature |
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Return the partial derivative of density with respect to temperature at constant pressure |
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Return the partial derivative of density with respect to mass fractions at constant pressure and temperature |
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Specific heat capacity of gas mixture at constant pressure |
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Specific heat capacity of gas mixture at constant volume |
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Return thermodynamic state as function of density d, temperature T and composition X |
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Return thermodynamic state as function of pressure p, specific enthalpy h and composition X |
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Return thermodynamic state as function of p, T and composition X or Xi |
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Return the thermodynamic state as function of p, s and composition X or Xi |
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Compute specific enthalpy from pressure, temperature and mass fraction |
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Specific enthalpy |
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Specific Gibbs energy |
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Specific Helmholtz energy |
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Return the isentropic enthalpy |
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Specific internal energy |
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Return temperature of ideal gas as a function of the thermodynamic state record |
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Return the molar mass |
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Compute temperature from specific enthalpy and mass fraction |
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Thermal conductivity of dry air as a polynomial in the temperature |
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Coefficient data record for properties of perfect gases |
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 |
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 |
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Temperature derivative of enthalpy of liquid per unit mass of liquid |
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Derivative of enthalpy of steam per unit mass of steam |
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Enthalpy of dry air per unit mass of dry air |
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Derivative of enthalpy of dry air per unit mass of dry air |
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Derivative of enthalpy of non-condensing gas per unit mass of steam |
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Derivative of specific heat capacity of gas mixture at constant pressure |
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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 |
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Return mass fractions X from mole fractions |
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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={"CO2"} | 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=Modelica.SIunits.Conversions.from_degC(20) | 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 |
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Critical, triple, molecular and other standard data of fluid |
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Return thermodynamic state so that it smoothly approximates: if x > 0 then state_a else state_b |
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Return the Prandtl number |
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Alias for deprecated name |
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Alias for deprecated name |
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Return isentropic exponent |
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Return velocity of sound |
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Alias for isobaricExpansionCoefficient for user convenience |
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Alias of isothermalCompressibility for user convenience |
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Return density derivative w.r.t. pressure at const specific enthalpy |
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Return density derivative w.r.t. specific enthalpy at constant pressure |
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Return specific enthalpy from p, T, and X or Xi |
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Return density from p, T, and X or Xi |
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Return density from p, h, and X or Xi |
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Return temperature from p,s, and X or Xi |
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Return density from p, s, and X or Xi |
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Return specific enthalpy from p, s, and X or Xi |
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Type for mass flow rate with medium specific attributes |
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Type for absolute pressure with medium specific attributes |
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Type for density with medium specific attributes |
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Type for dynamic viscosity with medium specific attributes |
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Type for enthalpy flow rate with medium specific attributes |
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Type for mass fraction with medium specific attributes |
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Type for mole fraction with medium specific attributes |
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Type for molar mass with medium specific attributes |
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Type for molar volume with medium specific attributes |
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Type for isentropic exponent with medium specific attributes |
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Type for specific energy with medium specific attributes |
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Type for specific internal energy with medium specific attributes |
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Type for specific enthalpy with medium specific attributes |
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Type for specific entropy with medium specific attributes |
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Type for specific heat capacity with medium specific attributes |
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Type for surface tension with medium specific attributes |
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Type for temperature with medium specific attributes |
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Type for thermal conductivity with medium specific attributes |
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Type for Prandtl number with medium specific attributes |
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Type for velocity of sound with medium specific attributes |
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Type for unspecified, mass-specific property transported by flow |
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Type for conserved integral of unspecified, mass specific property |
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Type for flow rate of unspecified, mass-specific property |
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Type for isobaric expansion coefficient with medium specific attributes |
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Type for dipole moment with medium specific attributes |
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Type for partial derivative of density with respect to pressure with medium specific attributes |
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Type for partial derivative of density with respect to enthalpy with medium specific attributes |
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Type for partial derivative of enthalpy with respect to pressure with medium specific attributes |
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Type for partial derivative of density with respect to temperature with medium specific attributes |
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Type for partial derivative of temperature with respect to pressure with medium specific attributes |
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Saturation properties of two phase medium |
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Validity limits for fluid model |
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Phase of the fluid: 1 for 1-phase, 2 for two-phase, 0 for not known, e.g., interactive use |
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The most basic version of a record used in several degrees of detail |
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The ideal gas version of a record used in several degrees of detail |
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The two phase fluid version of a record used in several degrees of detail |