Buildings.ThermalZones.ReducedOrder.Examples.SimpleRoomFourElementsTraceSubstance.Medium

Medium model

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.)
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
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
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={"C_flow"}	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
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