This medium model is identical to Buildings.Media.ConstantPropertyLiquidWater, except for the following points:
kappa_const
.
If kappa_const=0
, then the density is constant. Otherwise,
the density is
ρ(p) = ρ(p0) ( 1 + κconst (p-p0)) This equation is implemented in the base class Buildings.Media.Interfaces.PartialSimpleMedium.
Extends from Buildings.Media.ConstantPropertyLiquidWater.BaseClasses.ConstantPropertyLiquidWater (Water: Simple liquid water medium (incompressible, constant data)).
Name | Description |
---|---|
![]() | Return specific internal energy |
![]() | Package with base classes for medium models |
Inherited | |
cp_const | Constant specific heat capacity at constant pressure |
cv_const | Constant specific heat capacity at constant volume |
d_const | Constant density |
eta_const | Constant dynamic viscosity |
lambda_const | Constant thermal conductivity |
a_const | Constant velocity of sound |
T_min | Minimum temperature valid for medium model |
T_max | Maximum temperature valid for medium model |
T0=reference_T | Zero enthalpy temperature |
MM_const | Molar mass |
fluidConstants | fluid constants |
![]() | Thermodynamic state |
kappa_const=0 | Compressibility factor at constant temperature |
p0=3E5 | Reference pressure for compressibility and default medium pressure |
![]() | Base properties |
![]() | Return thermodynamic state from p, T, and X or Xi |
![]() | Return thermodynamic state from p, h, and X or Xi |
![]() | Return thermodynamic state from p, s, and X or Xi |
![]() | Return thermodynamic state from d, T, and X or Xi |
![]() | Return thermodynamic state so that it smoothly approximates: if x > 0 then state_a else state_b |
![]() | Return dynamic viscosity |
![]() | Return thermal conductivity |
![]() | Return pressure |
![]() | Return temperature |
![]() | Return density |
![]() | Return specific enthalpy |
![]() | Return specific heat capacity at constant pressure |
![]() | Return specific heat capacity at constant volume |
![]() | Return isentropic exponent |
![]() | Return velocity of sound |
![]() | Return specific enthalpy from p, T, and X or Xi |
![]() | Return temperature from p, h, and X or Xi |
![]() | Return density from p, h, and X or Xi |
![]() | Return thermodynamic state from p and T |
![]() | Return thermodynamic state from p and h |
![]() | Return thermodynamic state from p and s |
![]() | Return thermodynamic state from d and T |
![]() | Return density from p and h |
![]() | Return temperature from p and h |
![]() | Return pressure from d and T |
![]() | Return specific enthalpy from d and T |
![]() | Return specific enthalpy from p and s |
![]() | Return temperature from p and s |
![]() | Return density from p and s |
![]() | Return specific enthalpy from p and T |
![]() | Return density from p and T |
ThermoStates | Enumeration type for independent variables |
mediumName="unusablePartialMedium" | Name of the medium |
substanceNames={mediumName} | 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 | = 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=298.15 | Reference temperature of Medium: default 25 deg Celsius |
reference_X=fill(1/nX, nX) | 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) |
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 |
![]() | critical, triple, molecular and other standard data of fluid |
![]() | Return the Prandtl number |
![]() | Return specific entropy |
![]() | Return specific Gibbs energy |
![]() | Return specific Helmholtz energy |
![]() | alias for deprecated name |
![]() | alias for deprecated name |
![]() | Return isentropic enthalpy |
![]() | Return overall the isobaric expansion coefficient beta |
![]() | alias for isobaricExpansionCoefficient for user convenience |
![]() | Return overall the isothermal compressibility factor |
![]() | alias of isothermalCompressibility for user convenience |
![]() | Return density derivative wrt pressure at const specific enthalpy |
![]() | Return density derivative wrt specific enthalpy at constant pressure |
![]() | Return density derivative wrt pressure at const temperature |
![]() | Return density derivative wrt temperature at constant pressure |
![]() | Return density derivative wrt mass fraction |
![]() | Return the molar mass of the medium |
![]() | Return density from p, T, and X or Xi |
![]() | Return temperature from p,s, and X or Xi |
![]() | Return density from p, s, and X or Xi |
![]() | Return specific enthalpy from p, s, and X or Xi |
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 |
MassFlowRate | Type for mass 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 resect to pressure with medium specific attributes |
DerDensityByEnthalpy | Type for partial derivative of density with resect to enthalpy with medium specific attributes |
DerEnthalpyByPressure | Type for partial derivative of enthalpy with resect to pressure with medium specific attributes |
DerDensityByTemperature | Type for partial derivative of density with resect to temperature with medium specific attributes |
![]() | Types, constants to define menu choices |
Type | Name | Default | Description |
---|---|---|---|
ThermodynamicState | state |
Type | Name | Description |
---|---|---|
SpecificEnergy | u | Specific internal energy [J/kg] |
redeclare replaceable function extends specificInternalEnergy "Return specific internal energy" input ThermodynamicState state; output SpecificEnergy u "Specific internal energy"; algorithm u := cv_const * (state.T-T0); end specificInternalEnergy;