WOLFRAM SYSTEMMODELER

Essotherm650

Essotherm thermal oil

Package Constants (51)

ThermoStates

Value: if enthalpyOfT then Modelica.Media.Interfaces.Choices.IndependentVariables.T else Modelica.Media.Interfaces.Choices.IndependentVariables.pT

Type: IndependentVariables

Description: Enumeration type for independent variables

mediumName

Value: "Essotherm 650"

Type: String

Description: Name of the medium

substanceNames

Value: {mediumName}

Type: String[:]

Description: Names of the mixture substances. Set substanceNames={mediumName} if only one substance.

extraPropertiesNames

Value: fill("", 0)

Type: String[:]

Description: Names of the additional (extra) transported properties. Set extraPropertiesNames=fill("",0) if unused

singleState

Value: true

Type: Boolean

Description: = true, if u and d are not a function of pressure

reducedX

Value: true

Type: Boolean

Description: = true if medium contains the equation sum(X) = 1.0; set reducedX=true if only one substance (see docu for details)

fixedX

Value: true

Type: Boolean

Description: = true if medium contains the equation X = reference_X

reference_p

Value: 1.013e5

Type: AbsolutePressure (Pa)

Description: Reference pressure of Medium: default 1 atmosphere

reference_T

Value: 298.15

Type: Temperature (K)

Description: Reference temperature of Medium: default 25 deg Celsius

reference_X

Value: fill(1 / nX, nX)

Type: MassFraction[nX] (kg/kg)

Description: Default mass fractions of medium

p_default

Value: 101325

Type: AbsolutePressure (Pa)

Description: Default value for pressure of medium (for initialization)

T_default

Value: Modelica.SIunits.Conversions.from_degC(20)

Type: Temperature (K)

Description: Default value for temperature of medium (for initialization)

h_default

Value: specificEnthalpy_pTX(p_default, T_default, X_default)

Type: SpecificEnthalpy (J/kg)

Description: Default value for specific enthalpy of medium (for initialization)

X_default

Value: reference_X

Type: MassFraction[nX] (kg/kg)

Description: Default value for mass fractions of medium (for initialization)

C_default

Value: fill(0, nC)

Type: ExtraProperty[nC]

Description: Default value for trace substances of medium (for initialization)

nS

Value: size(substanceNames, 1)

Type: Integer

Description: Number of substances

nX

Value: nS

Type: Integer

Description: Number of mass fractions

nXi

Value: if fixedX then 0 else if reducedX then nS - 1 else nS

Type: Integer

Description: Number of structurally independent mass fractions (see docu for details)

nC

Value: size(extraPropertiesNames, 1)

Type: Integer

Description: Number of extra (outside of standard mass-balance) transported properties

C_nominal

Value: 1.0e-6 * ones(nC)

Type: Real[nC]

Description: Default for the nominal values for the extra properties

enthalpyOfT

Value: true

Type: Boolean

Description: True if enthalpy is approximated as a function of T only, (p-dependence neglected)

densityOfT

Value: size(tableDensity, 1) > 1

Type: Boolean

Description: True if density is a function of temperature

T_min

Value: Cv.from_degC(0)

Type: Temperature (K)

Description: Minimum temperature valid for medium model

T_max

Value: Cv.from_degC(320)

Type: Temperature (K)

Description: Maximum temperature valid for medium model

T0

Value: 273.15

Type: Temperature (K)

Description: Reference Temperature

h0

Value: 0

Type: SpecificEnthalpy (J/kg)

Description: Reference enthalpy at T0, reference_p

s0

Value: 0

Type: SpecificEntropy (J/(kg·K))

Description: Reference entropy at T0, reference_p

MM_const

Value: 0.1

Type: MolarMass (kg/mol)

Description: Molar mass

npol

Value: 2

Type: Integer

Description: Degree of polynomial used for fitting

npolDensity

Value: npol

Type: Integer

Description: Degree of polynomial used for fitting rho(T)

npolHeatCapacity

Value: npol

Type: Integer

Description: Degree of polynomial used for fitting Cp(T)

npolViscosity

Value: npol

Type: Integer

Description: Degree of polynomial used for fitting eta(T)

npolVaporPressure

Value: npol

Type: Integer

Description: Degree of polynomial used for fitting pVap(T)

npolConductivity

Value: npol

Type: Integer

Description: Degree of polynomial used for fitting lambda(T)

neta

Value: size(tableViscosity, 1)

Type: Integer

Description: Number of data points for viscosity

tableDensity

Value: [0, 909; 20, 897; 40, 884; 60, 871; 80, 859; 100, 846; 150, 813; 200, 781; 250, 748; 300, 715; 320, 702]

Type: Real[:,2]

Description: Table for rho(T)

tableHeatCapacity

Value: [0, 1770; 20, 1850; 40, 1920; 60, 1990; 80, 2060; 100, 2130; 150, 2310; 200, 2490; 250, 2670; 300, 2850; 320, 2920]

Type: Real[:,2]

Description: Table for Cp(T)

tableViscosity

Value: [0, 14370; 20, 1917; 40, 424; 60, 134; 80, 54.5; 100, 26.64; 150, 7.47; 200, 3.22; 250, 1.76; 300, 1.10; 320, 0.94]

Type: Real[:,2]

Description: Table for eta(T)

tableVaporPressure

Value: [160, 3; 180, 10; 200, 40; 220, 100; 240, 300; 260, 600; 280, 1600; 300, 3e3; 320, 5.5e3]

Type: Real[:,2]

Description: Table for pVap(T)

tableConductivity

Value: [0, 0.1302; 20, 0.1288; 40, 0.1274; 60, 0.1260; 80, 0.1246; 100, 0.1232; 150, 0.1197; 200, 0.1163; 250, 0.1128; 300, 0.1093; 320, 0.1079]

Type: Real[:,2]

Description: Table for lambda(T)

TinK

Value: false

Type: Boolean

Description: True if T[K],Kelvin used for table temperatures

hasDensity

Value: not size(tableDensity, 1) == 0

Type: Boolean

Description: True if table tableDensity is present

hasHeatCapacity

Value: not size(tableHeatCapacity, 1) == 0

Type: Boolean

Description: True if table tableHeatCapacity is present

hasViscosity

Value: not size(tableViscosity, 1) == 0

Type: Boolean

Description: True if table tableViscosity is present

hasVaporPressure

Value: not size(tableVaporPressure, 1) == 0

Type: Boolean

Description: True if table tableVaporPressure is present

invTK

Value: if size(tableViscosity, 1) > 0 then if TinK then 1 ./ tableViscosity[:, 1] else 1 ./ Cv.from_degC(tableViscosity[:, 1]) else fill(0, neta)

Type: Real[neta]

poly_rho

Value: if hasDensity then Poly.fitting(tableDensity[:, 1], tableDensity[:, 2], npolDensity) else zeros(npolDensity + 1)

Type: Real[:]

poly_Cp

Value: if hasHeatCapacity then Poly.fitting(tableHeatCapacity[:, 1], tableHeatCapacity[:, 2], npolHeatCapacity) else zeros(npolHeatCapacity + 1)

Type: Real[:]

poly_eta

Value: if hasViscosity then Poly.fitting(invTK, Math.log(tableViscosity[:, 2]), npolViscosity) else zeros(npolViscosity + 1)

Type: Real[:]

poly_pVap

Value: if hasVaporPressure then Poly.fitting(tableVaporPressure[:, 1], tableVaporPressure[:, 2], npolVaporPressure) else zeros(npolVaporPressure + 1)

Type: Real[:]

poly_lam

Value: if size(tableConductivity, 1) > 0 then Poly.fitting(tableConductivity[:, 1], tableConductivity[:, 2], npolConductivity) else zeros(npolConductivity + 1)

Type: Real[:]

Wolfram Language

In[1]:=
SystemModel["Modelica.Media.Incompressible.Examples.Essotherm650"]
Out[1]:=