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Buildings.Fluid.HeatExchangers.ThermalWheels.Data.Characteristics

Functions for wheel characteristics

Information

This package implements performance curves for thermal wheels.

Extends from Modelica.Icons.Package (Icon for standard packages).

Package Content

Name Description
Buildings.Fluid.HeatExchangers.ThermalWheels.Data.Characteristics.HeatExchangerEffectiveness HeatExchangerEffectiveness Parameters for defining heat exchanger effectiveness at different wheel speed ratios
Buildings.Fluid.HeatExchangers.ThermalWheels.Data.Characteristics.MotorEfficiency MotorEfficiency Parameters for defining relative motor efficiency at different wheel speeds

Buildings.Fluid.HeatExchangers.ThermalWheels.Data.Characteristics.HeatExchangerEffectiveness Buildings.Fluid.HeatExchangers.ThermalWheels.Data.Characteristics.HeatExchangerEffectiveness

Parameters for defining heat exchanger effectiveness at different wheel speed ratios

Information

Data record that describes wheel speed ratio uSpe versus heat exchange effectiveness corrections epsCor, i.e., the ratio of the heat exchange effectiveness to that when the uSpe is 1. The elements of the vector uSpe should be in ascending order, i.e.,uSpe[i] < uSpe[i+1]. Both vectors, uSpe and epsCor must have the same size.

Extends from Modelica.Icons.Record (Icon for records).

Contents

TypeNameDefaultDescription
RealuSpe[:] Wheel speed ratio [1]
RealepsCor[:] Correction of the heat exchange effectiveness for speed ratios between 0 and 1 [1]

Modelica definition

record HeatExchangerEffectiveness "Parameters for defining heat exchanger effectiveness at different wheel speed ratios" extends Modelica.Icons.Record; parameter Real uSpe[:]( each final min=0, each final unit="1") "Wheel speed ratio"; parameter Real epsCor[:]( each final max=1, each final unit="1") "Correction of the heat exchange effectiveness for speed ratios between 0 and 1"; end HeatExchangerEffectiveness;

Buildings.Fluid.HeatExchangers.ThermalWheels.Data.Characteristics.MotorEfficiency Buildings.Fluid.HeatExchangers.ThermalWheels.Data.Characteristics.MotorEfficiency

Parameters for defining relative motor efficiency at different wheel speeds

Information

This model describes wheel speed ratio uSpe versus the ratio of motor efficiency eta, i.e., the ratio of the motor efficiency at the given speed to the one when the uSpe is 1. The elements of the vector uSpe should be in ascending order, i.e.,uSpe[i] < uSpe[i+1]. Both vectors, uSpe and eta must have the same size.

Extends from Modelica.Icons.Record (Icon for records).

Contents

TypeNameDefaultDescription
RealuSpe[:] Wheel speed ratio [1]
Efficiencyeta[size(uSpe, 1)] Ratio of the wheel motor efficiency at the given speed to the one when the speed is 1 [1]

Modelica definition

record MotorEfficiency "Parameters for defining relative motor efficiency at different wheel speeds" extends Modelica.Icons.Record; parameter Real uSpe[:]( each final min=0, each final unit="1") "Wheel speed ratio"; parameter Modelica.Units.SI.Efficiency eta[size(uSpe, 1)]( each final max=1) "Ratio of the wheel motor efficiency at the given speed to the one when the speed is 1"; end MotorEfficiency;