Buildings.Fluid.Chillers.ModularReversible.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.Fluid.Chillers.ModularReversible.
Extends from Modelica.Icons.ExamplesPackage (Icon for packages containing runnable examples).
Package Content
| Name | Description |
|---|---|
 CarnotWithLosses
|
Example for reversible Carnot chiller model |
| LargeScaleWaterToWater
|
Example for large scale water to water chiller |
| Modular
|
Example for modular reversible chiller |
Buildings.Fluid.Chillers.ModularReversible.Examples.CarnotWithLosses
Example for reversible Carnot chiller model
Information
Example that simulates a chiller based on the modular reversible approach
using the
Buildings.Fluid.Chillers.ModularReversible.CarnotWithLosses.
model directly.
The chiller control signal is the compressor speed
ySet and the mode coo.
As the model contains internal safety controls, the
compressor set speed ySet and actually applied
speed yMea are plotted to show the influence of
the safety control.
Extends from Modelica.Icons.Example (Icon for runnable examples).
Modelica definition
model CarnotWithLosses
"Example for reversible Carnot chiller model"
extends Modelica.Icons.Example;
package MediumCon = Buildings.Media.Water "Medium model for condenser";
package MediumEva = Buildings.Media.Water "Medium model for evaporator";
Buildings.Fluid.Chillers.ModularReversible.CarnotWithLosses chi(
redeclare package MediumCon = MediumCon,
redeclare package MediumEva = MediumEva,
QCoo_flow_nominal=-30000,
redeclare Buildings.Fluid.HeatPumps.ModularReversible.Controls.Safety.Data.Wuellhorst2021
safCtrPar(
minOffTime=100,
use_maxCycRat=false,
tabUppHea=[263.15,313.15; 333.15,313.15],
tabLowCoo=[263.15,283.15; 333.15,283.15],
use_TEvaOutCoo=true),
TConCoo_nominal=313.15,
dpCon_nominal(displayUnit="Pa") = 6000,
use_conCap=false,
CCon=0,
GConOut=0,
GConIns=0,
TEvaCoo_nominal=278.15,
dTEva_nominal(displayUnit="K") = 10,
dTCon_nominal(displayUnit="K") = 5,
dpEva_nominal(displayUnit="Pa") = 6000,
use_evaCap=false,
CEva=0,
GEvaOut=0,
GEvaIns=0,
energyDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial,
show_T=true,
QHea_flow_nominal=40000,
TConHea_nominal=293.15,
TEvaHea_nominal=303.15)
"Chiller instance with reversbile Carnot approach";
Buildings.Fluid.Sources.MassFlowSource_T souCon(
nPorts=1,
redeclare package Medium = MediumCon,
use_T_in=true,
m_flow=chi.mCon_flow_nominal,
T=298.15) "Condenser source";
Buildings.Fluid.Sources.MassFlowSource_T souEva(
nPorts=1,
redeclare package Medium = MediumEva,
use_T_in=true,
m_flow=chi.mEva_flow_nominal,
T=291.15) "Evaporator source";
Buildings.Fluid.Sources.Boundary_pT sinCon(nPorts=1, redeclare package Medium =
MediumCon) "Condenser sink";
Buildings.Fluid.Sources.Boundary_pT sinEva(nPorts=1, redeclare package Medium =
MediumEva) "Evaporator sink";
Modelica.Blocks.Sources.SawTooth ySet(
amplitude=-1,
period=500,
offset=1,
startTime=500) "Compressor control signal";
Modelica.Blocks.Sources.Ramp TConIn(
height=10,
duration=60,
offset=273.15 + 30,
startTime=60) "Condenser inlet temperature";
Modelica.Blocks.Sources.Ramp TEvaIn(
height=10,
duration=60,
startTime=900,
offset=273.15 + 15) "Evaporator inlet temperature";
equation
connect(souCon.ports[1], chi.port_a1);
connect(souEva.ports[1], chi.port_a2);
connect(chi.port_b1, sinCon.ports[1]);
connect(sinEva.ports[1], chi.port_b2);
connect(TConIn.y, souCon.T_in);
connect(TEvaIn.y, souEva.T_in);
connect(ySet.y, chi.ySet);
end CarnotWithLosses;
Buildings.Fluid.Chillers.ModularReversible.Examples.LargeScaleWaterToWater
Example for large scale water to water chiller
Information
Example that simulates a chiller based on the modular reversible approach
using the
Buildings.Fluid.Chillers.ModularReversible.LargeScaleWaterToWater.
model directly.
The chiller control signal is the compressor speed
ySet and the mode coo.
As the model contains internal safety controls, the
compressor set speed ySet and actually applied
speed yMea are plotted to show the influence of
the safety control.
Extends from Modelica.Icons.Example (Icon for runnable examples).
Modelica definition
model LargeScaleWaterToWater
"Example for large scale water to water chiller"
extends Modelica.Icons.Example;
package MediumCon = Buildings.Media.Water "Medium model for condenser";
package MediumEva = Buildings.Media.Water "Medium model for evaporator";
Buildings.Fluid.Chillers.ModularReversible.LargeScaleWaterToWater chi(
redeclare Buildings.Fluid.Chillers.ModularReversible.Data.TableData2D.EN14511.Carrier30XWP1012_1MW
datTab,
redeclare Buildings.Fluid.HeatPumps.ModularReversible.Controls.Safety.Data.Wuellhorst2021
safCtrPar,
redeclare package MediumCon = MediumCon,
redeclare package MediumEva = MediumEva,
QCoo_flow_nominal=-1000000,
TConCoo_nominal=313.15,
dpCon_nominal(displayUnit="Pa") = 6000,
TEvaCoo_nominal=278.15,
dpEva_nominal(displayUnit="Pa") = 6000,
energyDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial)
"Large scale water to water chiller";
Buildings.Fluid.Sources.MassFlowSource_T souCon(
nPorts=1,
redeclare package Medium = MediumCon,
use_T_in=true,
m_flow=chi.mCon_flow_nominal,
T=298.15) "Condenser source";
Buildings.Fluid.Sources.MassFlowSource_T souEva(
nPorts=1,
redeclare package Medium = MediumEva,
use_T_in=true,
m_flow=chi.mEva_flow_nominal,
T=291.15) "Evaporator source";
Buildings.Fluid.Sources.Boundary_pT sinCon(nPorts=1, redeclare package Medium =
MediumCon) "Condenser sink";
Buildings.Fluid.Sources.Boundary_pT sinEva(nPorts=1, redeclare package Medium =
MediumEva) "Evaporator sink";
Modelica.Blocks.Sources.Ramp ySet(
height=-1,
duration=900,
offset=1,
startTime=1800) "Compressor control signal";
Modelica.Blocks.Sources.Ramp TConIn(
height=10,
duration=60,
offset=273.15 + 30,
startTime=60) "Condenser inlet temperature";
Modelica.Blocks.Sources.Ramp TEvaIn(
height=10,
duration=60,
startTime=900,
offset=273.15 + 15) "Evaporator inlet temperature";
equation
connect(souCon.ports[1], chi.port_a1);
connect(souEva.ports[1], chi.port_a2);
connect(chi.port_b1, sinCon.ports[1]);
connect(sinEva.ports[1], chi.port_b2);
connect(TConIn.y, souCon.T_in);
connect(TEvaIn.y, souEva.T_in);
connect(ySet.y, chi.ySet);
end LargeScaleWaterToWater;
Buildings.Fluid.Chillers.ModularReversible.Examples.Modular
Example for modular reversible chiller
Information
Example that simulates a chiller based on the modular reversible approach.
The chiller control signal is the compressor speed
ySet and the mode coo.
As the model contains internal safety controls, the
compressor set speed ySet and actually applied
speed yMea are plotted to show the influence of
the safety control.
The example further demonstrates how to redeclare the replaceable options in the model approach Buildings.Fluid.Chillers.ModularReversible.Modular.
Extends from Modelica.Icons.Example (Icon for runnable examples).
Modelica definition
model Modular
"Example for modular reversible chiller"
extends Modelica.Icons.Example;
package MediumCon = Buildings.Media.Air "Medium model for condenser";
package MediumEva = Buildings.Media.Water "Medium model for evaporator";
Buildings.Fluid.Chillers.ModularReversible.Modular chi(
redeclare package MediumCon = MediumCon,
redeclare package MediumEva = MediumEva,
use_rev=true,
allowDifferentDeviceIdentifiers=true,
QCoo_flow_nominal=-30000,
redeclare model RefrigerantCycleInertia =
Buildings.Fluid.HeatPumps.ModularReversible.RefrigerantCycle.Inertias.VariableOrder
(
refIneFreConst=1/300,
nthOrd=1,
initType=Modelica.Blocks.Types.Init.InitialState),
redeclare Buildings.Fluid.HeatPumps.ModularReversible.Controls.Safety.Data.Wuellhorst2021
safCtrPar(minOffTime=100, use_opeEnv=false),
TConCoo_nominal=313.15,
dpCon_nominal(displayUnit="Pa") = 6000,
use_conCap=false,
CCon=0,
GConOut=0,
GConIns=0,
TEvaCoo_nominal=278.15,
dTEva_nominal=5,
dTCon_nominal=5,
dpEva_nominal(displayUnit="Pa") = 6000,
use_evaCap=false,
CEva=0,
GEvaOut=0,
GEvaIns=0,
energyDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial,
show_T=true,
QHea_flow_nominal=30000,
redeclare model RefrigerantCycleChillerCooling =
Buildings.Fluid.Chillers.ModularReversible.RefrigerantCycle.ConstantCarnotEffectiveness
(etaCarnot_nominal=0.35),
redeclare model RefrigerantCycleChillerHeating =
Buildings.Fluid.HeatPumps.ModularReversible.RefrigerantCycle.TableData2D (
redeclare Buildings.Fluid.HeatPumps.ModularReversible.RefrigerantCycle.Frosting.NoFrosting
iceFacCal, datTab=
Buildings.Fluid.HeatPumps.ModularReversible.Data.TableData2D.EN14511.Vitocal251A08()),
TEvaHea_nominal=303.15,
TConHea_nominal=298.15)
"Modular reversible chiller instance";
Buildings.Fluid.Sources.MassFlowSource_T souCon(
nPorts=1,
redeclare package Medium = MediumCon,
use_T_in=true,
m_flow=chi.mCon_flow_nominal,
T=298.15) "Condenser source";
Buildings.Fluid.Sources.MassFlowSource_T souEva(
nPorts=1,
redeclare package Medium = MediumEva,
use_T_in=true,
m_flow=chi.mEva_flow_nominal,
T=291.15) "Evaporator source";
Buildings.Fluid.Sources.Boundary_pT sinCon(nPorts=1, redeclare package Medium =
MediumCon) "Condenser sink";
Buildings.Fluid.Sources.Boundary_pT sinEva(nPorts=1, redeclare package Medium =
MediumEva) "Evaporator sink";
Modelica.Blocks.Sources.SawTooth ySet(
amplitude=-1,
period=500,
offset=1,
startTime=500) "Compressor control signal";
Modelica.Blocks.Sources.Ramp TConIn(
height=10,
duration=60,
offset=273.15 + 30,
startTime=60) "Condenser inlet temperature";
Modelica.Blocks.Sources.Ramp TEvaIn(
height=10,
duration=60,
startTime=900,
offset=273.15 + 15) "Evaporator inlet temperature";
Modelica.Blocks.Sources.BooleanStep chiCoo(startTime=2100, startValue=true)
"Chilling mode on";
equation
connect(souCon.ports[1], chi.port_a1);
connect(souEva.ports[1], chi.port_a2);
connect(chi.port_b1, sinCon.ports[1]);
connect(sinEva.ports[1], chi.port_b2);
connect(TConIn.y, souCon.T_in);
connect(TEvaIn.y, souEva.T_in);
connect(ySet.y, chi.ySet);
connect(chiCoo.y, chi.coo);
end Modular;