Buildings.Fluid.DXSystems.BaseClasses.Examples
Package with examples of base class components for DX cooling coil model
Information
This package contains examples of base class components for DX cooling coil models.Extends from Modelica.Icons.ExamplesPackage (Icon for packages containing runnable examples).
Package Content
| Name | Description |
|---|---|
 CapacityAirSource
|
Test model for CapacityAirSource |
| DryCoil
|
Test model for DryCoil |
Buildings.Fluid.DXSystems.BaseClasses.Examples.CapacityAirSource
Test model for CapacityAirSource
Information
This example illustrates working of cooling capacity function Buildings.Fluid.DXSystems.BaseClasses.CapacityAirSource.
Extends from Modelica.Icons.Example (Icon for runnable examples).
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Stage | sta | sta(nomVal(Q_flow_nominal=-2... | Performance data |
Modelica definition
model CapacityAirSource "Test model for CapacityAirSource"
extends Modelica.Icons.Example;
package Medium = Buildings.Media.Air;
Buildings.Fluid.DXSystems.BaseClasses.CapacityAirSource
cooCap(sta={sta}, nSta=1) "Cooling capacity calculation";
Modelica.Blocks.Sources.Ramp m_flow(
duration=2400,
startTime=600,
height=sta.nomVal.m_flow_nominal,
offset=0) "Mass flow rate of air";
Modelica.Blocks.Sources.Ramp TWetBulIn(
duration=2400,
startTime=600,
height=10,
offset=273.15 + 19.4) "Air wet bulb temperature entering the coil";
Modelica.Blocks.Sources.IntegerStep onOff(startTime=600)
"Compressor on-off signal";
Modelica.Blocks.Sources.Ramp TConIn(
duration=2400,
startTime=600,
height=5,
offset=273.15 + 30)
"Condenser inlet temperature (Outside drybulb temperature)";
parameter Buildings.Fluid.DXSystems.Cooling.AirSource.Data.Generic.BaseClasses.Stage
sta(
nomVal(Q_flow_nominal=-21000,COP_nominal=3,
SHR_nominal=0.8,m_flow_nominal=1.5),
perCur = Buildings.Fluid.DXSystems.Cooling.BaseClasses.Examples.PerformanceCurves.Curve_III_AirCooled(),
spe=188.49555921539) "Performance data";
equation
connect(TConIn.y, cooCap.TConIn);
connect(m_flow.y, cooCap.m_flow);
connect(onOff.y, cooCap.stage);
connect(TWetBulIn.y, cooCap.TEvaIn);
end CapacityAirSource;
Buildings.Fluid.DXSystems.BaseClasses.Examples.DryCoil
Test model for DryCoil
Information
This example illustrates working of DryCoil block Buildings.Fluid.DXSystems.BaseClasses.DryCoil.
Extends from Modelica.Icons.Example (Icon for runnable examples).
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| DXCoil | datCoi | datCoi(sta={Buildings.Fluid.... | Coil data |
Modelica definition
model DryCoil "Test model for DryCoil"
extends Modelica.Icons.Example;
package Medium = Buildings.Media.Air;
Modelica.Blocks.Sources.Constant TConIn(
k=273.15 + 35) "Condenser inlet air temperature";
Buildings.Fluid.DXSystems.BaseClasses.DryCoil dryCoi(
redeclare package Medium = Medium,
datCoi=datCoi,
variableSpeedCoil=true,
redeclare Buildings.Fluid.DXSystems.BaseClasses.CapacityAirSource
coiCap,
use_mCon_flow=false) "Performs calculation for dry coil condition";
Modelica.Blocks.Sources.IntegerStep onOff(
startTime=1200) "Compressor on-off signal";
Modelica.Blocks.Sources.Ramp m_flow(
startTime=1200,
duration=600,
height=1.5) "Mass flow rate of air";
Modelica.Blocks.Sources.Ramp TEvaIn(
duration=600,
startTime=2400,
height=-4,
offset=273.15 + 29) "Dry bulb temperature of air entering the coil";
Modelica.Blocks.Sources.TimeTable speRat(table=[0.0,0.0; 900,0.25; 1800,0.50;
2700,0.75]) "Speed ratio ";
parameter Buildings.Fluid.DXSystems.Cooling.AirSource.Data.Generic.DXCoil datCoi(
sta={
Buildings.Fluid.DXSystems.Cooling.AirSource.Data.Generic.BaseClasses.Stage(
spe=900/60,
nomVal=
Buildings.Fluid.DXSystems.Cooling.AirSource.Data.Generic.BaseClasses.NominalValues(
Q_flow_nominal=-12000,
COP_nominal=3,
SHR_nominal=0.8,
m_flow_nominal=0.9),
perCur=
Buildings.Fluid.DXSystems.Cooling.BaseClasses.Examples.PerformanceCurves.Curve_I_AirCooled()),
Buildings.Fluid.DXSystems.Cooling.AirSource.Data.Generic.BaseClasses.Stage(
spe=1200/60,
nomVal=
Buildings.Fluid.DXSystems.Cooling.AirSource.Data.Generic.BaseClasses.NominalValues(
Q_flow_nominal=-18000,
COP_nominal=3,
SHR_nominal=0.8,
m_flow_nominal=1.2),
perCur=
Buildings.Fluid.DXSystems.Cooling.BaseClasses.Examples.PerformanceCurves.Curve_I_AirCooled()),
Buildings.Fluid.DXSystems.Cooling.AirSource.Data.Generic.BaseClasses.Stage(
spe=1800/60,
nomVal=
Buildings.Fluid.DXSystems.Cooling.AirSource.Data.Generic.BaseClasses.NominalValues(
Q_flow_nominal=-21000,
COP_nominal=3,
SHR_nominal=0.8,
m_flow_nominal=1.5),
perCur=
Buildings.Fluid.DXSystems.Cooling.BaseClasses.Examples.PerformanceCurves.Curve_II_AirCooled()),
Buildings.Fluid.DXSystems.Cooling.AirSource.Data.Generic.BaseClasses.Stage(
spe=2400/60,
nomVal=
Buildings.Fluid.DXSystems.Cooling.AirSource.Data.Generic.BaseClasses.NominalValues(
Q_flow_nominal=-30000,
COP_nominal=3,
SHR_nominal=0.8,
m_flow_nominal=1.8),
perCur=
Buildings.Fluid.DXSystems.Cooling.BaseClasses.Examples.PerformanceCurves.Curve_III_AirCooled())},
nSta=4)
"Coil data";
equation
connect(TConIn.y, dryCoi.TConIn);
connect(m_flow.y, dryCoi.m_flow);
connect(TEvaIn.y, dryCoi.TEvaIn);
connect(speRat.y, dryCoi.speRat);
connect(onOff.y, dryCoi.stage);
end DryCoil;