Buildings.Fluid.DataCenters.CDUs.LiquidToLiquid.Data.BaseClasses

Package with base classes

Information

This package contains base classes that are used to construct the classes in Buildings.Fluid.DataCenters.CDUs.LiquidToLiquid.Data.

Extends from Modelica.Icons.BasesPackage (Icon for packages containing base classes).

Package Content

Name	Description
density_TX_a	Return density
dynamicViscosity_TX_a	Return dynamic viscosity
prandtlNumber_TX_a	Return Prandtl number
specificHeatCapacityCp_TX_a	Return specific heat capacity at constant pressure
thermalConductivity_TX_a	Return thermal conductivity

Buildings.Fluid.DataCenters.CDUs.LiquidToLiquid.Data.BaseClasses.density_TX_a

Return density

Information

Function to return the mass density for specified glycol mass fraction and temperature.

This function returns the mass density by calling the functions in Buildings.Media.Antifreeze.Functions. For water, the input argument X_a is not used. For glycol, set it to the mass fraction of glycol.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
Media	medium	Medium type
MassFraction	X_a	Glycol mass fraction [1]
Temperature	T	Temperature at which properties are evaluated [K]

Outputs

Type	Name	Description
Density	d	Prandtl number [kg/m3]

Modelica definition

function density_TX_a "Return density" extends Modelica.Icons.Function; input Buildings.Fluid.DataCenters.CDUs.Types.Media medium "Medium type"; input Modelica.Units.SI.MassFraction X_a "Glycol mass fraction"; input Modelica.Units.SI.Temperature T "Temperature at which properties are evaluated"; output Modelica.Units.SI.Density d "Prandtl number"; algorithm d := if medium == Buildings.Fluid.DataCenters.CDUs.Types.Media.EthyleneGlycol then Buildings.Media.Antifreeze.Functions.EthyleneGlycolWater.density_TX_a(X_a=X_a, T=T) else Buildings.Media.Antifreeze.Functions.PropyleneGlycolWater.density_TX_a(X_a=X_a, T=T); end density_TX_a;

Buildings.Fluid.DataCenters.CDUs.LiquidToLiquid.Data.BaseClasses.dynamicViscosity_TX_a

Return dynamic viscosity

Information

Function to return dynamic viscosity for specified glycol mass fraction and temperature.

This function returns the dynamic viscosity by calling the functions in Buildings.Media.Antifreeze.Functions. For water, the input argument X_a is not used. For glycol, set it to the mass fraction of glycol.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
Media	medium	Medium type
MassFraction	X_a	Glycol mass fraction [1]
Temperature	T	Temperature at which properties are evaluated [K]

Outputs

Type	Name	Description
DynamicViscosity	eta_default	Dynamic viscosity [Pa.s]

Modelica definition

function dynamicViscosity_TX_a "Return dynamic viscosity" extends Modelica.Icons.Function; input Buildings.Fluid.DataCenters.CDUs.Types.Media medium "Medium type"; input Modelica.Units.SI.MassFraction X_a "Glycol mass fraction"; input Modelica.Units.SI.Temperature T "Temperature at which properties are evaluated"; output Modelica.Units.SI.DynamicViscosity eta_default "Dynamic viscosity"; algorithm eta_default := if medium == Buildings.Fluid.DataCenters.CDUs.Types.Media.EthyleneGlycol then Buildings.Media.Antifreeze.Functions.EthyleneGlycolWater.dynamicViscosity_TX_a(X_a=X_a, T=T) else Buildings.Media.Antifreeze.Functions.PropyleneGlycolWater.dynamicViscosity_TX_a(X_a=X_a, T=T); end dynamicViscosity_TX_a;

Buildings.Fluid.DataCenters.CDUs.LiquidToLiquid.Data.BaseClasses.prandtlNumber_TX_a

Return Prandtl number

Information

Function to return Prandtl number for specified glycol mass fraction and temperature.

This function returns the Prandtl number by calling the functions in Buildings.Media.Antifreeze.Functions. For water, the input argument X_a is not used. For glycol, set it to the mass fraction of glycol.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
Media	medium	Medium type
MassFraction	X_a	Glycol mass fraction [1]
Temperature	T	Temperature at which properties are evaluated [K]

Outputs

Type	Name	Description
PrandtlNumber	Pr_default	Prandtl number [1]

Modelica definition

function prandtlNumber_TX_a "Return Prandtl number" extends Modelica.Icons.Function; input Buildings.Fluid.DataCenters.CDUs.Types.Media medium "Medium type"; input Modelica.Units.SI.MassFraction X_a "Glycol mass fraction"; input Modelica.Units.SI.Temperature T "Temperature at which properties are evaluated"; output Modelica.Units.SI.PrandtlNumber Pr_default "Prandtl number"; algorithm Pr_default := if medium == Buildings.Fluid.DataCenters.CDUs.Types.Media.EthyleneGlycol then Buildings.Media.Antifreeze.Functions.EthyleneGlycolWater.prandtlNumber_TX_a(X_a=X_a, T=T) else Buildings.Media.Antifreeze.Functions.PropyleneGlycolWater.prandtlNumber_TX_a(X_a=X_a, T=T); end prandtlNumber_TX_a;

Buildings.Fluid.DataCenters.CDUs.LiquidToLiquid.Data.BaseClasses.specificHeatCapacityCp_TX_a

Return specific heat capacity at constant pressure

Information

Function to return specific heat capacity at constant pressure for specified glycol mass fraction and temperature.

This function returns the specific heat capacity by calling the functions in Buildings.Media.Antifreeze.Functions. For water, the input argument X_a is not used. For glycol, set it to the mass fraction of glycol.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
Media	medium	Medium type
MassFraction	X_a	Glycol mass fraction [1]
Temperature	T	Temperature at which properties are evaluated [K]

Outputs

Type	Name	Description
SpecificHeatCapacity	cp_default	Specific heat capacity at constant pressure [J/(kg.K)]

Modelica definition

function specificHeatCapacityCp_TX_a "Return specific heat capacity at constant pressure" extends Modelica.Icons.Function; input Buildings.Fluid.DataCenters.CDUs.Types.Media medium "Medium type"; input Modelica.Units.SI.MassFraction X_a "Glycol mass fraction"; input Modelica.Units.SI.Temperature T "Temperature at which properties are evaluated"; output Modelica.Units.SI.SpecificHeatCapacity cp_default "Specific heat capacity at constant pressure"; algorithm cp_default := if medium == Buildings.Fluid.DataCenters.CDUs.Types.Media.EthyleneGlycol then Buildings.Media.Antifreeze.Functions.EthyleneGlycolWater.specificHeatCapacityCp_TX_a(X_a=X_a, T=T) else Buildings.Media.Antifreeze.Functions.PropyleneGlycolWater.specificHeatCapacityCp_TX_a(X_a=X_a, T=T); end specificHeatCapacityCp_TX_a;

Buildings.Fluid.DataCenters.CDUs.LiquidToLiquid.Data.BaseClasses.thermalConductivity_TX_a

Return thermal conductivity

Information

Function to return thermal conductivity for specified glycol mass fraction and temperature.

This function returns the thermal conductivity by calling the functions in Buildings.Media.Antifreeze.Functions. For water, the input argument X_a is not used. For glycol, set it to the mass fraction of glycol.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
Media	medium	Medium type
MassFraction	X_a	Glycol mass fraction [1]
Temperature	T	Temperature at which properties are evaluated [K]

Outputs

Type	Name	Description
ThermalConductivity	k_default	Thermal conductivity [W/(m.K)]

Modelica definition

function thermalConductivity_TX_a "Return thermal conductivity" extends Modelica.Icons.Function; input Buildings.Fluid.DataCenters.CDUs.Types.Media medium "Medium type"; input Modelica.Units.SI.MassFraction X_a "Glycol mass fraction"; input Modelica.Units.SI.Temperature T "Temperature at which properties are evaluated"; output Modelica.Units.SI.ThermalConductivity k_default "Thermal conductivity"; algorithm k_default := if medium == Buildings.Fluid.DataCenters.CDUs.Types.Media.EthyleneGlycol then Buildings.Media.Antifreeze.Functions.EthyleneGlycolWater.thermalConductivity_TX_a(X_a=X_a, T=T) else Buildings.Media.Antifreeze.Functions.PropyleneGlycolWater.thermalConductivity_TX_a(X_a=X_a, T=T); end thermalConductivity_TX_a;