Buildings.Experimental.DistrictHeatingCooling.Examples
Collection of models that illustrate model use and test models
Information
This package contains examples for the use of models that can be found in Buildings.Experimental.DistrictHeatingCooling.
Extends from Modelica.Icons.ExamplesPackage (Icon for packages containing runnable examples).
Package Content
| Name | Description |
|---|---|
 HeatingCoolingHotWater3Clusters
|
Validation model for a system with three clusters of buildings |
| HeatingCoolingHotWater3ClustersBaseCase
|
Base case for model of a system with 3 clusters |
| IdealSystem3Clusters
|
Validation model for a small system with three clusters of buildings |
 BaseClasses
|
Package with base classes |
Buildings.Experimental.DistrictHeatingCooling.Examples.HeatingCoolingHotWater3Clusters
Validation model for a system with three clusters of buildings
Information
This model validates a small ideal bi-directional heating and cooling network. The heating and cooling heat flow rates extracted from the district supply are prescribed by time series.
Extends from Buildings.Experimental.DistrictHeatingCooling.Examples.BaseClasses.HeatingCoolingHotWater3Clusters (Load models for Buildings.Experimental.DistrictHeatingCooling.Examples.HeatingCoolingHotWater3Clusters), Modelica.Icons.Example (Icon for runnable examples).
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| HeatFlowRate | Q_flow_nominal | 2.5E6 | Nominal heat flow rate, positive for heating, negative for cooling [W] |
| Real | R_nominal | 100 | Pressure drop per meter at nominal flow rate [Pa/m] |
| Nominal conditions | |||
| Temperature | TChiSup_nominal | 273.15 + 16 | Chilled water leaving temperature at the evaporator [K] |
| Temperature | THeaSup_nominal | 273.15 + 30 | Supply temperature space heating system at TOut_nominal [K] |
| Temperature | THeaRet_nominal | 273.15 + 25 | Return temperature space heating system at TOut_nominal [K] |
| Design parameter | |||
| Temperature | TSetHeaLea | 273.15 + 12 | Set point for leaving fluid temperature warm supply [K] |
| Temperature | TSetCooLea | 273.15 + 16 | Set point for leaving fluid temperature cold supply [K] |
| TemperatureDifference | dT_nominal | TSetCooLea - TSetHeaLea | Temperature difference between warm and cold pipe [K] |
Connectors
| Type | Name | Description |
|---|---|---|
| Bus | weaBus | Weather data bus |
Modelica definition
model HeatingCoolingHotWater3Clusters
"Validation model for a system with three clusters of buildings"
extends Buildings.Experimental.DistrictHeatingCooling.Examples.BaseClasses.HeatingCoolingHotWater3Clusters
(PHea(nu=17), PCoo(nu=9));
extends Modelica.Icons.Example;
package Medium = Buildings.Media.Water "Fluid in the pipes";
parameter Modelica.SIunits.HeatFlowRate Q_flow_nominal=2.5E6
"Nominal heat flow rate, positive for heating, negative for cooling";
parameter Modelica.SIunits.Temperature TSetHeaLea=273.15 + 12
"Set point for leaving fluid temperature warm supply";
parameter Modelica.SIunits.Temperature TSetCooLea=273.15 + 16
"Set point for leaving fluid temperature cold supply";
parameter Modelica.SIunits.TemperatureDifference dT_nominal(
min=0.5,
displayUnit="K") = TSetCooLea - TSetHeaLea
"Temperature difference between warm and cold pipe";
parameter Real R_nominal(unit="Pa/m") = 100
"Pressure drop per meter at nominal flow rate";
final parameter Modelica.SIunits.MassFlowRate m_flow_nominal=Q_flow_nominal/4200
/dT_nominal "Nominal mass flow rate";
Plants.HeatingCoolingCarnot_T pla(
redeclare package Medium = Medium,
show_T=true,
m_flow_nominal=m_flow_nominal) "Heating and cooling plant";
Plants.LakeWaterHeatExchanger_T bayWatHex(
dpHex_nominal=0,
redeclare package Medium = Medium,
m_flow_nominal=m_flow_nominal,
show_T=true) "Bay water heat exchanger";
Buildings.Fluid.Sources.Boundary_pT pSet(redeclare package Medium = Medium,
nPorts=1) "Model to set the reference pressure";
Buildings.Fluid.FixedResistances.Pipe pip(
redeclare package Medium = Medium,
m_flow_nominal=m_flow_nominal,
nSeg=3,
thicknessIns=0.2,
lambdaIns=0.04,
length=50,
energyDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial);
Buildings.Fluid.FixedResistances.Pipe pip1(
redeclare package Medium = Medium,
m_flow_nominal=m_flow_nominal,
nSeg=3,
thicknessIns=0.2,
lambdaIns=0.04,
length=50,
energyDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial);
Buildings.Fluid.FixedResistances.Pipe pip2(
redeclare package Medium = Medium,
nSeg=3,
thicknessIns=0.2,
lambdaIns=0.04,
length=50,
energyDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial,
m_flow_nominal=m_flow_nominal/3);
Buildings.Fluid.FixedResistances.Pipe pip3(
redeclare package Medium = Medium,
nSeg=3,
thicknessIns=0.2,
lambdaIns=0.04,
length=50,
energyDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial,
m_flow_nominal=m_flow_nominal/3);
Buildings.Fluid.FixedResistances.Pipe pip4(
redeclare package Medium = Medium,
nSeg=3,
thicknessIns=0.2,
lambdaIns=0.04,
length=50,
energyDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial,
m_flow_nominal=m_flow_nominal/3);
Buildings.Fluid.FixedResistances.Pipe pip5(
redeclare package Medium = Medium,
nSeg=3,
thicknessIns=0.2,
lambdaIns=0.04,
length=50,
energyDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial,
m_flow_nominal=m_flow_nominal/3);
Buildings.Fluid.FixedResistances.Junction splSup1(
redeclare package Medium = Medium,
m_flow_nominal=m_flow_nominal*{1,1,1},
dp_nominal=40*R_nominal*{0,1,1},
energyDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial,
tau=5*60,
from_dp=false) "Flow splitter";
Buildings.Fluid.FixedResistances.Junction splRet1(
redeclare package Medium = Medium,
m_flow_nominal=m_flow_nominal*{1,1,1},
dp_nominal=40*R_nominal*{0,1,1},
energyDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial,
tau=5*60,
from_dp=false) "Flow splitter";
Buildings.Fluid.FixedResistances.Junction splSup2(
redeclare package Medium = Medium,
m_flow_nominal=m_flow_nominal*{1,1,1},
dp_nominal=40*R_nominal*{0,1,1},
energyDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial,
tau=5*60,
from_dp=false) "Flow splitter";
Buildings.Fluid.FixedResistances.Junction splRet2(
redeclare package Medium = Medium,
m_flow_nominal=m_flow_nominal*{1,1,1},
dp_nominal=40*R_nominal*{0,1,1},
energyDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial,
tau=5*60,
from_dp=false) "Flow splitter";
Buildings.Fluid.FixedResistances.Junction splSup3(
redeclare package Medium = Medium,
m_flow_nominal=m_flow_nominal*{1,1,1},
dp_nominal=40*R_nominal*{0,1,1},
energyDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial,
tau=5*60,
from_dp=false) "Flow splitter";
Buildings.Fluid.FixedResistances.Junction splRet3(
redeclare package Medium = Medium,
m_flow_nominal=m_flow_nominal*{1,1,1},
dp_nominal=40*R_nominal*{0,1,1},
energyDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial,
tau=5*60,
from_dp=false) "Flow splitter";
Buildings.Fluid.FixedResistances.Junction splSup5(
redeclare package Medium = Medium,
m_flow_nominal=m_flow_nominal*{1,1,1},
dp_nominal=40*R_nominal*{0,1,1},
energyDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial,
tau=5*60,
from_dp=false) "Flow splitter";
Buildings.Fluid.FixedResistances.Junction splRet5(
redeclare package Medium = Medium,
m_flow_nominal=m_flow_nominal*{1,1,1},
dp_nominal=40*R_nominal*{0,1,1},
energyDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial,
tau=5*60,
from_dp=false) "Flow splitter";
Buildings.Fluid.FixedResistances.Junction splSup6(
redeclare package Medium = Medium,
m_flow_nominal=m_flow_nominal*{1,1,1},
dp_nominal=40*R_nominal*{0,1,1},
energyDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial,
tau=5*60,
from_dp=false) "Flow splitter";
Buildings.Fluid.FixedResistances.Junction splRet6(
redeclare package Medium = Medium,
m_flow_nominal=m_flow_nominal*{1,1,1},
dp_nominal=40*R_nominal*{0,1,1},
energyDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial,
tau=5*60,
from_dp=false) "Flow splitter";
Buildings.Fluid.FixedResistances.Junction splSup4(
redeclare package Medium = Medium,
m_flow_nominal=m_flow_nominal*{1,1,1},
dp_nominal=40*R_nominal*{0,1,1},
energyDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial,
tau=5*60,
from_dp=false) "Flow splitter";
Buildings.Fluid.FixedResistances.Junction splRet4(
redeclare package Medium = Medium,
m_flow_nominal=m_flow_nominal*{1,1,1},
dp_nominal=40*R_nominal*{0,1,1},
energyDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial,
tau=5*60,
from_dp=false) "Flow splitter";
Buildings.Fluid.FixedResistances.Junction splSup7(
redeclare package Medium = Medium,
m_flow_nominal=m_flow_nominal*{1,1,1},
dp_nominal=40*R_nominal*{0,1,1},
energyDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial,
tau=5*60,
from_dp=false) "Flow splitter";
Buildings.Fluid.FixedResistances.Junction splRet7(
redeclare package Medium = Medium,
m_flow_nominal=m_flow_nominal*{1,1,1},
dp_nominal=40*R_nominal*{0,1,1},
energyDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial,
tau=5*60,
from_dp=false) "Flow splitter";
protected
Modelica.Blocks.Sources.Constant TSetC(k=TSetCooLea)
"Set point temperature for leaving water";
Modelica.Blocks.Sources.Constant TSetH(k=TSetHeaLea)
"Set point temperature for leaving water";
public
Modelica.Blocks.Sources.CombiTimeTable watTem(
tableOnFile=true,
tableName="tab1",
extrapolation=Modelica.Blocks.Types.Extrapolation.Periodic,
smoothness=Modelica.Blocks.Types.Smoothness.ContinuousDerivative,
y(each unit="K"),
fileName=
Buildings.BoundaryConditions.WeatherData.BaseClasses.getAbsolutePath("modelica://Buildings/Resources/Data/Experimental/DistrictHeatingCooling/Plants/AlamedaOceanT.mos"))
"Temperature of the water reservoir (such as a river, lake or ocean)";
equation
connect(splSup1.port_2, splSup2.port_1);
connect(splSup2.port_2, splSup3.port_1);
connect(splSup1.port_3, larOff1.port_a);
connect(larOff1.port_b, splRet1.port_3);
connect(splSup2.port_3, ret1.port_a);
connect(splSup3.port_3, larOff2.port_a);
connect(ret1.port_b, splRet2.port_3);
connect(splRet1.port_2, splRet2.port_1);
connect(splRet2.port_2, splRet3.port_1);
connect(larOff2.port_b, splRet3.port_3);
connect(pip2.port_b, splSup5.port_1);
connect(splSup5.port_2, splSup6.port_1);
connect(splSup5.port_3, apa1.port_a);
connect(splSup6.port_3, larOff3.port_a);
connect(splSup6.port_2, larOff4.port_a);
connect(pip3.port_a, splRet5.port_1);
connect(splRet5.port_2, splRet6.port_1);
connect(apa1.port_b, splRet5.port_3);
connect(larOff3.port_b, splRet6.port_3);
connect(splRet6.port_2, larOff4.port_b);
connect(splSup3.port_2, splSup4.port_1);
connect(splSup4.port_2, pip2.port_a);
connect(splSup4.port_3, pip4.port_a);
connect(splRet3.port_2, splRet4.port_1);
connect(splRet4.port_2, pip3.port_b);
connect(splRet4.port_3, pip5.port_b);
connect(pip4.port_b, splSup7.port_1);
connect(splSup7.port_3, apa2.port_a);
connect(apa2.port_b, splRet7.port_3);
connect(splSup7.port_2, ret2.port_a);
connect(pip5.port_a, splRet7.port_1);
connect(splRet7.port_2, ret2.port_b);
connect(pip.port_b, splSup1.port_1);
connect(pip1.port_a, splRet1.port_1);
connect(pla.TSetHea, TSetH.y);
connect(TSetC.y, pla.TSetCoo);
connect(bayWatHex.TSetHea, TSetH.y);
connect(TSetC.y, bayWatHex.TSetCoo);
connect(bayWatHex.port_b1, pip.port_a);
connect(bayWatHex.port_a2, pip1.port_b);
connect(bayWatHex.port_b2, pla.port_a);
connect(pla.port_b, bayWatHex.port_a1);
connect(pSet.ports[1], pla.port_a);
connect(pla.TSink, weaBus.TDryBul);
//////
////
connect(pla.PComHea, PHea.u[17]);
connect(pla.PComCoo, PCoo.u[9]);
connect(bayWatHex.TSouWat, watTem.y[1]);
connect(bayWatHex.TSouHea, weaBus.TDryBul);
connect(bayWatHex.TSouCoo, weaBus.TDryBul);
end HeatingCoolingHotWater3Clusters;
Buildings.Experimental.DistrictHeatingCooling.Examples.HeatingCoolingHotWater3ClustersBaseCase
Base case for model of a system with 3 clusters
Information
This is the base case model for Buildings.Experimental.DistrictHeatingCooling.Examples.HeatingCoolingHotWater3Clusters.
Rather than being connected in a bi-directional district heating and cooling system, the heat pumps of each building are exposed to outside air conditions. Hence, they do not share any waste heat with each other.
Extends from Buildings.Experimental.DistrictHeatingCooling.Examples.BaseClasses.HeatingCoolingHotWater3Clusters (Load models for Buildings.Experimental.DistrictHeatingCooling.Examples.HeatingCoolingHotWater3Clusters), Modelica.Icons.Example (Icon for runnable examples).
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Nominal conditions | |||
| Temperature | TChiSup_nominal | 273.15 + 16 | Chilled water leaving temperature at the evaporator [K] |
| Temperature | THeaSup_nominal | 273.15 + 30 | Supply temperature space heating system at TOut_nominal [K] |
| Temperature | THeaRet_nominal | 273.15 + 25 | Return temperature space heating system at TOut_nominal [K] |
Connectors
| Type | Name | Description |
|---|---|---|
| Bus | weaBus | Weather data bus |
Modelica definition
model HeatingCoolingHotWater3ClustersBaseCase
"Base case for model of a system with 3 clusters"
extends Buildings.Experimental.DistrictHeatingCooling.Examples.BaseClasses.HeatingCoolingHotWater3Clusters
(
larOff1(mixingVolumeEnergyDynamics=Modelica.Fluid.Types.Dynamics.SteadyState),
ret1(mixingVolumeEnergyDynamics=Modelica.Fluid.Types.Dynamics.SteadyState),
larOff2(mixingVolumeEnergyDynamics=Modelica.Fluid.Types.Dynamics.SteadyState),
apa1(mixingVolumeEnergyDynamics=Modelica.Fluid.Types.Dynamics.SteadyState),
larOff3(mixingVolumeEnergyDynamics=Modelica.Fluid.Types.Dynamics.SteadyState),
larOff4(mixingVolumeEnergyDynamics=Modelica.Fluid.Types.Dynamics.SteadyState),
apa2(mixingVolumeEnergyDynamics=Modelica.Fluid.Types.Dynamics.SteadyState),
ret2(mixingVolumeEnergyDynamics=Modelica.Fluid.Types.Dynamics.SteadyState));
extends Modelica.Icons.Example;
BaseClasses.SubStationBoundaryCondition bou_a1(redeclare package Medium = Medium,
warmSide=true) "Boundary condition";
BaseClasses.SubStationBoundaryCondition bou_b1(redeclare package Medium = Medium,
warmSide=false) "Boundary condition";
BaseClasses.SubStationBoundaryCondition bou_a2(redeclare package Medium = Medium,
warmSide=true) "Boundary condition";
BaseClasses.SubStationBoundaryCondition bou_b2(redeclare package Medium = Medium,
warmSide=false) "Boundary condition";
BaseClasses.SubStationBoundaryCondition bou_a3(redeclare package Medium = Medium,
warmSide=true) "Boundary condition";
BaseClasses.SubStationBoundaryCondition bou_b3(redeclare package Medium = Medium,
warmSide=false) "Boundary condition";
BaseClasses.SubStationBoundaryCondition bou_a4(redeclare package Medium = Medium,
warmSide=true) "Boundary condition";
BaseClasses.SubStationBoundaryCondition bou_b4(redeclare package Medium = Medium,
warmSide=false) "Boundary condition";
BaseClasses.SubStationBoundaryCondition bou_a5(redeclare package Medium = Medium,
warmSide=true) "Boundary condition";
BaseClasses.SubStationBoundaryCondition bou_b5(redeclare package Medium = Medium,
warmSide=false) "Boundary condition";
BaseClasses.SubStationBoundaryCondition bou_a6(redeclare package Medium = Medium,
warmSide=true) "Boundary condition";
BaseClasses.SubStationBoundaryCondition bou_b6(redeclare package Medium = Medium,
warmSide=false) "Boundary condition";
BaseClasses.SubStationBoundaryCondition bou_a7(redeclare package Medium = Medium,
warmSide=true) "Boundary condition";
BaseClasses.SubStationBoundaryCondition bou_b7(redeclare package Medium = Medium,
warmSide=false) "Boundary condition";
BaseClasses.SubStationBoundaryCondition bou_a8(redeclare package Medium = Medium,
warmSide=true) "Boundary condition";
BaseClasses.SubStationBoundaryCondition bou_b8(redeclare package Medium = Medium,
warmSide=false) "Boundary condition";
equation
connect(weaBus.TDryBul, bou_a1.TOut);
connect(weaBus.TDryBul, bou_b1.TOut);
connect(weaBus.TDryBul, bou_a2.TOut);
connect(weaBus.TDryBul, bou_b2.TOut);
connect(weaBus.TDryBul, bou_a3.TOut);
connect(weaBus.TDryBul, bou_b3.TOut);
connect(weaBus.TDryBul, bou_a4.TOut);
connect(weaBus.TDryBul, bou_b4.TOut);
connect(weaBus.TDryBul, bou_a5.TOut);
connect(weaBus.TDryBul, bou_b5.TOut);
connect(weaBus.TDryBul, bou_a6.TOut);
connect(weaBus.TDryBul, bou_b6.TOut);
connect(weaBus.TDryBul, bou_a7.TOut);
connect(weaBus.TDryBul, bou_b7.TOut);
connect(weaBus.TDryBul, bou_a8.TOut);
connect(weaBus.TDryBul, bou_b8.TOut);
connect(bou_a1.port_a, larOff1.port_a);
connect(bou_a1.heaPor, larOff1.heatPort_a);
connect(bou_b1.port_a, larOff1.port_b);
connect(larOff1.heatPort_b, bou_b1.heaPor);
connect(bou_a2.port_a, ret1.port_a);
connect(bou_a2.heaPor, ret1.heatPort_a);
connect(ret1.port_b, bou_b2.port_a);
connect(ret1.heatPort_b, bou_b2.heaPor);
connect(bou_a3.port_a, larOff2.port_a);
connect(bou_a3.heaPor, larOff2.heatPort_a);
connect(larOff2.port_b, bou_b3.port_a);
connect(larOff2.heatPort_b, bou_b3.heaPor);
connect(bou_a4.port_a, apa1.port_a);
connect(bou_a4.heaPor, apa1.heatPort_a);
connect(apa1.port_b, bou_b4.port_a);
connect(apa1.heatPort_b, bou_b4.heaPor);
connect(bou_a5.port_a, larOff3.port_a);
connect(bou_a5.heaPor, larOff3.heatPort_a);
connect(larOff3.port_b, bou_b5.port_a);
connect(larOff3.heatPort_b, bou_b5.heaPor);
connect(bou_a6.port_a, larOff4.port_a);
connect(bou_a6.heaPor, larOff4.heatPort_a);
connect(larOff4.port_b, bou_b6.port_a);
connect(larOff4.heatPort_b, bou_b6.heaPor);
connect(bou_a7.port_a, apa2.port_a);
connect(bou_a7.heaPor, apa2.heatPort_a);
connect(apa2.port_b, bou_b7.port_a);
connect(apa2.heatPort_b, bou_b7.heaPor);
connect(bou_a8.port_a, ret2.port_a);
connect(bou_a8.heaPor, ret2.heatPort_a);
connect(ret2.port_b, bou_b8.port_a);
connect(ret2.heatPort_b, bou_b8.heaPor);
end HeatingCoolingHotWater3ClustersBaseCase;
Buildings.Experimental.DistrictHeatingCooling.Examples.IdealSystem3Clusters
Validation model for a small system with three clusters of buildings
Information
This model validates a small ideal bi-directional heating and cooling network. The heating and cooling heat flow rates extracted from the district supply are prescribed by time series.
Extends from Modelica.Icons.Example (Icon for runnable examples).
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| HeatFlowRate | Q_flow_nominal | 3*2E6 | Nominal heat flow rate, positive for heating, negative for cooling [W] |
| Design parameter | |||
| Temperature | TSetHeaLea | 273.15 + 8 | Set point for leaving fluid temperature warm supply [K] |
| Temperature | TSetCooLea | 273.15 + 14 | Set point for leaving fluid temperature cold supply [K] |
| TemperatureDifference | dT_nominal | TSetCooLea - TSetHeaLea | Temperature difference between warm and cold pipe [K] |
Modelica definition
model IdealSystem3Clusters
"Validation model for a small system with three clusters of buildings"
extends Modelica.Icons.Example;
package Medium = Buildings.Media.Water "Fluid in the pipes";
parameter Modelica.SIunits.HeatFlowRate Q_flow_nominal=3*2E6
"Nominal heat flow rate, positive for heating, negative for cooling";
parameter Modelica.SIunits.Temperature TSetHeaLea=273.15 + 8
"Set point for leaving fluid temperature warm supply";
parameter Modelica.SIunits.Temperature TSetCooLea=273.15 + 14
"Set point for leaving fluid temperature cold supply";
parameter Modelica.SIunits.TemperatureDifference dT_nominal(
min=0.5,
displayUnit="K") = TSetCooLea - TSetHeaLea
"Temperature difference between warm and cold pipe";
final parameter Modelica.SIunits.MassFlowRate m_flow_nominal=Q_flow_nominal/4200
/dT_nominal "Nominal mass flow rate";
Plants.Ideal_T pla(
redeclare package Medium = Medium,
show_T=true,
m_flow_nominal=m_flow_nominal) "Heating and cooling plant";
Buildings.Fluid.Sources.Boundary_pT pSet(redeclare package Medium = Medium,
nPorts=1) "Model to set the reference pressure";
SubStations.Heating hea1(redeclare package Medium = Medium, Q_flow_nominal=200E3)
"Heating load";
SubStations.Heating hea2(redeclare package Medium = Medium, Q_flow_nominal=200E3)
"Heating load";
SubStations.Cooling coo1(redeclare package Medium = Medium, Q_flow_nominal=-250E3)
"Cooling load";
SubStations.Cooling coo2(redeclare package Medium = Medium, Q_flow_nominal=-100E3)
"Cooling load";
Buildings.Fluid.FixedResistances.Pipe pip(
redeclare package Medium = Medium,
m_flow_nominal=m_flow_nominal,
nSeg=3,
thicknessIns=0.2,
lambdaIns=0.04,
length=50,
energyDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial);
Buildings.Fluid.FixedResistances.Pipe pip1(
redeclare package Medium = Medium,
m_flow_nominal=m_flow_nominal,
nSeg=3,
thicknessIns=0.2,
lambdaIns=0.04,
length=50,
energyDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial);
Modelica.Blocks.Sources.CombiTimeTable QHea1(
table=[0, 200E3; 6, 200E3; 6, 50E3; 18, 50E3; 18, 75E3; 24, 75E3],
timeScale=3600,
extrapolation=Modelica.Blocks.Types.Extrapolation.Periodic)
"Heating demand";
Modelica.Blocks.Sources.CombiTimeTable QHea2(
table=[0, 200E3; 6, 200E3; 6, 50E3; 18, 50E3; 18, 0E3; 24, 0E3],
timeScale=3600,
extrapolation=Modelica.Blocks.Types.Extrapolation.Periodic)
"Heating demand";
Modelica.Blocks.Sources.CombiTimeTable QCoo1(
table=[0, -10E3; 6, -10E3; 6, -10E3; 12, -20E3; 18, -250E3; 24, -250E3],
timeScale=3600,
extrapolation=Modelica.Blocks.Types.Extrapolation.Periodic)
"Cooling demand";
Modelica.Blocks.Sources.CombiTimeTable QCoo2(
table=[0, -10E3; 9, -100E3; 9, -50E3; 18, -150E3; 18, -150E3; 24, -150E3],
timeScale=3600,
extrapolation=Modelica.Blocks.Types.Extrapolation.Periodic)
"Cooling demand";
SubStations.Heating hea3(redeclare package Medium = Medium, Q_flow_nominal=200E3)
"Heating load";
SubStations.Heating hea4(redeclare package Medium = Medium, Q_flow_nominal=100E3)
"Heating load";
SubStations.Cooling coo3(redeclare package Medium = Medium, Q_flow_nominal=-200E3)
"Cooling load";
SubStations.Cooling coo4(redeclare package Medium = Medium, Q_flow_nominal=-100E3)
"Cooling load";
Buildings.Fluid.FixedResistances.Pipe pip2(
redeclare package Medium = Medium,
nSeg=3,
thicknessIns=0.2,
lambdaIns=0.04,
length=50,
energyDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial,
m_flow_nominal=m_flow_nominal/3);
Buildings.Fluid.FixedResistances.Pipe pip3(
redeclare package Medium = Medium,
nSeg=3,
thicknessIns=0.2,
lambdaIns=0.04,
length=50,
energyDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial,
m_flow_nominal=m_flow_nominal/3);
Modelica.Blocks.Sources.CombiTimeTable QHea3(
table=[0, 200E3; 6, 200E3; 6, 50E3; 18, 50E3; 18, 75E3; 24, 75E3],
timeScale=3600,
extrapolation=Modelica.Blocks.Types.Extrapolation.Periodic)
"Heating demand";
Modelica.Blocks.Sources.CombiTimeTable QHea4(
table=[0, 100E3; 6, 100E3; 6, 50E3; 18, 50E3; 18, 75E3; 24, 75E3],
timeScale=3600,
extrapolation=Modelica.Blocks.Types.Extrapolation.Periodic)
"Heating demand";
Modelica.Blocks.Sources.CombiTimeTable QCoo3(
table=[0, -100E3; 6, -80E3; 6, -50E3; 12, -100E3; 18, -200E3; 24, -200E3],
timeScale=3600,
extrapolation=Modelica.Blocks.Types.Extrapolation.Periodic)
"Cooling demand";
Modelica.Blocks.Sources.CombiTimeTable QCoo4(
table=[0, -10E3; 9, -10E3; 9, -50E3; 18, -50E3; 18, -150E3; 24, -150E3],
timeScale=3600,
extrapolation=Modelica.Blocks.Types.Extrapolation.Periodic)
"Cooling demand";
SubStations.Heating hea5(redeclare package Medium = Medium, Q_flow_nominal=100E3)
"Heating load";
Modelica.Blocks.Sources.CombiTimeTable QHea5(
table=[0, 100E3; 6, 100E3; 6, 50E3; 18, 50E3; 18, 0E3; 24, 0E3],
timeScale=3600,
extrapolation=Modelica.Blocks.Types.Extrapolation.Periodic)
"Heating demand";
SubStations.Heating hea6(redeclare package Medium = Medium, Q_flow_nominal=200E3)
"Heating load";
SubStations.Heating hea7(redeclare package Medium = Medium, Q_flow_nominal=300E3)
"Heating load";
SubStations.Cooling coo5(redeclare package Medium = Medium, Q_flow_nominal=-150E3)
"Cooling load";
Buildings.Fluid.FixedResistances.Pipe pip4(
redeclare package Medium = Medium,
nSeg=3,
thicknessIns=0.2,
lambdaIns=0.04,
length=50,
energyDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial,
m_flow_nominal=m_flow_nominal/3);
Buildings.Fluid.FixedResistances.Pipe pip5(
redeclare package Medium = Medium,
nSeg=3,
thicknessIns=0.2,
lambdaIns=0.04,
length=50,
energyDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial,
m_flow_nominal=m_flow_nominal/3);
Modelica.Blocks.Sources.CombiTimeTable QHea6(
table=[0, 0E3; 6, 0; 6, 200E3; 18, 200E3; 18, 20E3; 24, 25E3],
timeScale=3600,
extrapolation=Modelica.Blocks.Types.Extrapolation.Periodic)
"Heating demand";
Modelica.Blocks.Sources.CombiTimeTable QHea7(
table=[0, 0E3; 6, 0E3; 6, 100E3; 18, 100E3; 18, 200E3; 24, 200E3],
timeScale=3600,
extrapolation=Modelica.Blocks.Types.Extrapolation.Periodic)
"Heating demand";
Modelica.Blocks.Sources.CombiTimeTable QCoo5(
table=[0, -50E3; 6, -50E3; 6, -50E3; 12, -20E3; 18, -150E3; 24, -150E3],
timeScale=3600,
extrapolation=Modelica.Blocks.Types.Extrapolation.Periodic)
"Cooling demand";
protected
Modelica.Blocks.Sources.Constant TSetC(k=TSetCooLea)
"Set point temperature for leaving water";
protected
Modelica.Blocks.Sources.Constant TSetH(k=TSetHeaLea)
"Set point temperature for leaving water";
equation
connect(pla.port_b, pip.port_a);
connect(pip.port_b, hea1.port_a);
connect(pip.port_b, hea2.port_a);
connect(pip.port_b, coo1.port_b);
connect(pip.port_b, coo2.port_b);
connect(pla.port_a, pip1.port_b);
connect(pip1.port_a, hea1.port_b);
connect(pip1.port_a, hea2.port_b);
connect(pip1.port_a, coo1.port_a);
connect(pip1.port_a, coo2.port_a);
connect(QHea1.y[1], hea1.Q_flow);
connect(QHea2.y[1], hea2.Q_flow);
connect(QCoo1.y[1], coo1.Q_flow);
connect(QCoo2.y[1], coo2.Q_flow);
connect(pSet.ports[1], pip1.port_b);
connect(pip2.port_b, hea3.port_a);
connect(pip2.port_b, hea4.port_a);
connect(pip2.port_b, coo3.port_b);
connect(pip2.port_b, coo4.port_b);
connect(pip3.port_a, hea3.port_b);
connect(pip3.port_a, hea4.port_b);
connect(pip3.port_a, coo3.port_a);
connect(pip3.port_a, coo4.port_a);
connect(QHea3.y[1], hea3.Q_flow);
connect(QHea4.y[1], hea4.Q_flow);
connect(QCoo3.y[1], coo3.Q_flow);
connect(QCoo4.y[1], coo4.Q_flow);
connect(pip2.port_a, pip.port_b);
connect(pip3.port_b, pip1.port_a);
connect(pip3.port_a, hea5.port_b);
connect(pip2.port_b, hea5.port_a);
connect(QHea5.y[1], hea5.Q_flow);
connect(pip4.port_b, hea6.port_a);
connect(pip4.port_b, hea7.port_a);
connect(pip4.port_b, coo5.port_b);
connect(pip5.port_a, hea6.port_b);
connect(pip5.port_a, hea7.port_b);
connect(pip5.port_a, coo5.port_a);
connect(QHea6.y[1], hea6.Q_flow);
connect(QHea7.y[1], hea7.Q_flow);
connect(QCoo5.y[1], coo5.Q_flow);
connect(pip4.port_a, pip.port_b);
connect(pip5.port_b, pip1.port_a);
connect(TSetH.y, pla.TSetHea);
connect(TSetC.y, pla.TSetCoo);
end IdealSystem3Clusters;