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Package with model for liquid water with constant properties


This medium model is identical to Modelica.Media.Water.ConstantPropertyLiquidWater, except for the following points:

Extends from Buildings.Media.Interfaces.PartialSimpleMedium (Medium model with linear dependency of u, h from temperature. Most other quantities are constant.).

Package Content

Buildings.Media.ConstantPropertyLiquidWater.specificInternalEnergy specificInternalEnergy Return specific internal energy
cp_constConstant specific heat capacity at constant pressure
cv_constConstant specific heat capacity at constant volume
d_constConstant density
eta_constConstant dynamic viscosity
lambda_constConstant thermal conductivity
a_constConstant velocity of sound
T_minMinimum temperature valid for medium model
T_maxMaximum temperature valid for medium model
T0=reference_TZero enthalpy temperature
MM_constMolar mass
fluidConstantsfluid constants
Buildings.Media.Interfaces.PartialSimpleMedium.ThermodynamicState ThermodynamicState Thermodynamic state
kappa_const=0Compressibility factor at constant temperature
p0=3E5Reference pressure for compressibility and default medium pressure
constantDensity=(kappa_const <= 1E-20)Flag, true if density is modeled as a constant
Buildings.Media.Interfaces.PartialSimpleMedium.BaseProperties BaseProperties  
Buildings.Media.Interfaces.PartialSimpleMedium.setState_pTX setState_pTX Return thermodynamic state from p, T, and X or Xi
Buildings.Media.Interfaces.PartialSimpleMedium.setState_phX setState_phX Return thermodynamic state from p, h, and X or Xi
Buildings.Media.Interfaces.PartialSimpleMedium.setState_psX setState_psX Return thermodynamic state from p, s, and X or Xi
Buildings.Media.Interfaces.PartialSimpleMedium.setState_dTX setState_dTX Return thermodynamic state from d, T, and X or Xi
Buildings.Media.Interfaces.PartialSimpleMedium.setSmoothState setSmoothState Return thermodynamic state so that it smoothly approximates: if x > 0 then state_a else state_b
Buildings.Media.Interfaces.PartialSimpleMedium.dynamicViscosity dynamicViscosity Return dynamic viscosity
Buildings.Media.Interfaces.PartialSimpleMedium.thermalConductivity thermalConductivity Return thermal conductivity
Buildings.Media.Interfaces.PartialSimpleMedium.pressure pressure Return pressure
Buildings.Media.Interfaces.PartialSimpleMedium.temperature temperature Return temperature
Buildings.Media.Interfaces.PartialSimpleMedium.density density Return density
Buildings.Media.Interfaces.PartialSimpleMedium.specificEnthalpy specificEnthalpy Return specific enthalpy
Buildings.Media.Interfaces.PartialSimpleMedium.specificHeatCapacityCp specificHeatCapacityCp Return specific heat capacity at constant pressure
Buildings.Media.Interfaces.PartialSimpleMedium.specificHeatCapacityCv specificHeatCapacityCv Return specific heat capacity at constant volume
Buildings.Media.Interfaces.PartialSimpleMedium.isentropicExponent isentropicExponent Return isentropic exponent
Buildings.Media.Interfaces.PartialSimpleMedium.velocityOfSound velocityOfSound Return velocity of sound
Buildings.Media.Interfaces.PartialSimpleMedium.specificEnthalpy_pTX specificEnthalpy_pTX Return specific enthalpy from p, T, and X or Xi
Buildings.Media.Interfaces.PartialSimpleMedium.temperature_phX temperature_phX Return temperature from p, h, and X or Xi
Buildings.Media.Interfaces.PartialSimpleMedium.density_phX density_phX Return density from p, h, and X or Xi
Modelica.Media.Interfaces.PartialPureSubstance.setState_pT setState_pT Return thermodynamic state from p and T
Modelica.Media.Interfaces.PartialPureSubstance.setState_ph setState_ph Return thermodynamic state from p and h
Modelica.Media.Interfaces.PartialPureSubstance.setState_ps setState_ps Return thermodynamic state from p and s
Modelica.Media.Interfaces.PartialPureSubstance.setState_dT setState_dT Return thermodynamic state from d and T
Modelica.Media.Interfaces.PartialPureSubstance.density_ph density_ph Return density from p and h
Modelica.Media.Interfaces.PartialPureSubstance.temperature_ph temperature_ph Return temperature from p and h
Modelica.Media.Interfaces.PartialPureSubstance.pressure_dT pressure_dT Return pressure from d and T
Modelica.Media.Interfaces.PartialPureSubstance.specificEnthalpy_dT specificEnthalpy_dT Return specific enthalpy from d and T
Modelica.Media.Interfaces.PartialPureSubstance.specificEnthalpy_ps specificEnthalpy_ps Return specific enthalpy from p and s
Modelica.Media.Interfaces.PartialPureSubstance.temperature_ps temperature_ps Return temperature from p and s
Modelica.Media.Interfaces.PartialPureSubstance.density_ps density_ps Return density from p and s
Modelica.Media.Interfaces.PartialPureSubstance.specificEnthalpy_pT specificEnthalpy_pT Return specific enthalpy from p and T
Modelica.Media.Interfaces.PartialPureSubstance.density_pT density_pT Return density from p and T
ThermoStatesEnumeration 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=101325Reference pressure of Medium: default 1 atmosphere
reference_T=298.15Reference temperature of Medium: default 25 deg Celsius
reference_X=fill(1/nX, nX)Default mass fractions of medium
p_default=101325Default 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_XDefault value for mass fractions of medium (for initialization)
nS=size(substanceNames, 1)Number of substances
nX=nSNumber of mass fractions
nXi=if fixedX then 0 else if reducedX then nS - 1 else nSNumber 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.prandtlNumber prandtlNumber Return the Prandtl number
Modelica.Media.Interfaces.PartialMedium.specificEntropy specificEntropy Return specific entropy
Modelica.Media.Interfaces.PartialMedium.specificGibbsEnergy specificGibbsEnergy Return specific Gibbs energy
Modelica.Media.Interfaces.PartialMedium.specificHelmholtzEnergy specificHelmholtzEnergy Return specific Helmholtz energy
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.isentropicEnthalpy isentropicEnthalpy Return isentropic enthalpy
Modelica.Media.Interfaces.PartialMedium.isobaricExpansionCoefficient isobaricExpansionCoefficient Return overall the isobaric expansion coefficient beta
Modelica.Media.Interfaces.PartialMedium.beta beta alias for isobaricExpansionCoefficient for user convenience
Modelica.Media.Interfaces.PartialMedium.isothermalCompressibility isothermalCompressibility Return overall the isothermal compressibility factor
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.density_derp_T density_derp_T Return density derivative w.r.t. pressure at const temperature
Modelica.Media.Interfaces.PartialMedium.density_derT_p density_derT_p Return density derivative w.r.t. temperature at constant pressure
Modelica.Media.Interfaces.PartialMedium.density_derX density_derX Return density derivative w.r.t. mass fraction
Modelica.Media.Interfaces.PartialMedium.molarMass molarMass Return the molar mass of the medium
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.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
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
Modelica.Media.Interfaces.PartialMedium.Choices Choices Types, constants to define menu choices

Buildings.Media.ConstantPropertyLiquidWater.specificInternalEnergy Buildings.Media.ConstantPropertyLiquidWater.specificInternalEnergy

Return specific internal energy


Extends from (Return specific internal energy).


ThermodynamicStatestate thermodynamic state record


SpecificEnergyuSpecific internal energy [J/kg]

Modelica definition

redeclare replaceable function extends specificInternalEnergy 
  "Return specific internal energy"
  u := cv_const * (state.T-T0);
end specificInternalEnergy;

Automatically generated Thu Oct 24 15:10:44 2013.