Buildings.Fluid.Chillers.ModularReversible.BaseClasses
Package with base classes for Buildings.Fluid.Chillers.ModularReversible
Information
This package contains base classes that are used to construct the models in Buildings.Fluid.Chillers.ModularReversible.
Extends from Modelica.Icons.BasesPackage (Icon for packages containing base classes).
Package Content
| Name | Description |
|---|---|
 RefrigerantCycle
|
Refrigerant cycle model of a chiller |
| RefrigerantCycleHeatRecovery
|
Refrigerant cycle model for cooling-only or heat recovery chiller models |
Buildings.Fluid.Chillers.ModularReversible.BaseClasses.RefrigerantCycle
Refrigerant cycle model of a chiller
Information
Modular refrigerant cycle model for chiller applications used in the model Buildings.Fluid.Chillers.ModularReversible.Modular and extending models of the modular approach.
This model adds the replaceable model approaches for cooling and heating data to the partial refrigerant cylce.
Further, an asseration warning is raised if the model approaches or sources for performance data differ. This indicates that they are not for the same device.
Extends from Buildings.Fluid.HeatPumps.ModularReversible.BaseClasses.PartialModularRefrigerantCycle (Partial refrigerant cycle model).
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Boolean | use_rev | true | True if the refrigerant machine is reversible |
| Boolean | allowDifferentDeviceIdentifiers | false | if use_rev=true, device data for cooling and heating need to entered. Set allowDifferentDeviceIdentifiers=true to allow different device identifiers devIde |
| replaceable model RefrigerantCycleChillerCooling | Buildings.Fluid.Chillers.Mod... | Replaceable model for refrigerant cycle of a chiller in main operation mode | |
| replaceable model RefrigerantCycleChillerHeating | Buildings.Fluid.HeatPumps.Mo... | Replaceable model for refrigerant cycle of a chiller in reversed operation mode | |
Connectors
| Type | Name | Description |
|---|---|---|
| RefrigerantMachineControlBus | sigBus | Signal bus with data for refrigerant models |
| output RealOutput | QCon_flow | Heat flow rate from the refrigerant to the condenser medium [W] |
| output RealOutput | QEva_flow | Heat flow rate from the evaporator medium to the refrigerant [W] |
| output RealOutput | PEle | Routing block that picks the component for electric power consumption [W] |
| replaceable model RefrigerantCycleChillerCooling | Replaceable model for refrigerant cycle of a chiller in main operation mode | |
| replaceable model RefrigerantCycleChillerHeating | Replaceable model for refrigerant cycle of a chiller in reversed operation mode | |
Modelica definition
model RefrigerantCycle "Refrigerant cycle model of a chiller"
extends Buildings.Fluid.HeatPumps.ModularReversible.BaseClasses.PartialModularRefrigerantCycle;
parameter Boolean allowDifferentDeviceIdentifiers=false
"if use_rev=true, device data for cooling and heating need to entered. Set allowDifferentDeviceIdentifiers=true to allow different device identifiers devIde";
replaceable model RefrigerantCycleChillerCooling =
Buildings.Fluid.Chillers.ModularReversible.RefrigerantCycle.BaseClasses.NoCooling(
useInChi=true)
constrainedby Buildings.Fluid.Chillers.ModularReversible.RefrigerantCycle.BaseClasses.PartialChillerCycle
"Replaceable model for refrigerant cycle of a chiller in main operation mode";
replaceable model RefrigerantCycleChillerHeating =
Buildings.Fluid.HeatPumps.ModularReversible.RefrigerantCycle.BaseClasses.NoHeating(
useInHeaPum=true)
constrainedby Buildings.Fluid.HeatPumps.ModularReversible.RefrigerantCycle.BaseClasses.PartialHeatPumpCycle
"Replaceable model for refrigerant cycle of a chiller in reversed operation mode";
RefrigerantCycleChillerCooling refCycChiCoo
"Refrigerant cycle instance for cooling";
RefrigerantCycleChillerHeating refCycChiHea
"Refrigerant cycle instance for heating";
protected
parameter String devIde =
if use_rev then refCycChiHea.devIde else refCycChiCoo.devIde
"Data source for refrigerant cycle";
initial algorithm
if not allowDifferentDeviceIdentifiers then
assert(
devIde == refCycChiCoo.devIde,
"In " + getInstanceName() + ": Device identifiers devIde for reversible operation are not equal.
Cooling device identifier is '" + refCycChiCoo.devIde + "' but heating is '"
+ devIde + "'. To allow this, set 'allowDifferentDeviceIdentifiers=true'.",
AssertionLevel.error);
end if;
equation
connect(pasTrhModSet.u, sigBus.coo);
connect(sigBus,refCycChiHea.sigBus);
connect(sigBus,refCycChiCoo.sigBus);
connect(swiPEle.u2, sigBus.coo);
connect(swiQEva.u2, sigBus.coo);
connect(swiQCon.u2, sigBus.coo);
connect(refCycChiCoo.QEva_flow, swiQEva.u1);
connect(refCycChiCoo.QCon_flow, swiQCon.u1);
connect(refCycChiCoo.PEle, swiPEle.u1);
connect(refCycChiHea.PEle, swiPEle.u3);
connect(refCycChiHea.QCon_flow, swiQEva.u3);
connect(refCycChiHea.QEva_flow, swiQCon.u3);
end RefrigerantCycle;
Buildings.Fluid.Chillers.ModularReversible.BaseClasses.RefrigerantCycleHeatRecovery
Refrigerant cycle model for cooling-only or heat recovery chiller models
Information
This is the refrigerant cycle model used in Buildings.Fluid.Chillers.ModularReversible.TableData2DLoadDep.
In contrast to
Buildings.Fluid.Chillers.ModularReversible.BaseClasses.RefrigerantCycle,
this model includes a unique component that can be configured to
either represent a cooling-only chiller (have_switchover=false)
or a heat recovery chiller (have_switchover=true).
A unique performance data file is required, providing
the maximum cooling heat flow rate and power, regardless of the setting
for have_switchover.
Extends from Buildings.Fluid.HeatPumps.ModularReversible.BaseClasses.PartialModularRefrigerantCycle (Partial refrigerant cycle model).
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Boolean | use_rev | false | True if the refrigerant machine is reversible |
| Boolean | have_switchover | false | Set to true for heat recovery chiller with built-in switchover |
| replaceable model RefrigerantCycleChillerCooling | Buildings.Fluid.Chillers.Mod... | Replaceable model for refrigerant cycle of a chiller in main operation mode | |
Connectors
| Type | Name | Description |
|---|---|---|
| RefrigerantMachineControlBus | sigBus | Signal bus with data for refrigerant models |
| output RealOutput | QCon_flow | Heat flow rate from the refrigerant to the condenser medium [W] |
| output RealOutput | QEva_flow | Heat flow rate from the evaporator medium to the refrigerant [W] |
| output RealOutput | PEle | Routing block that picks the component for electric power consumption [W] |
| replaceable model RefrigerantCycleChillerCooling | Replaceable model for refrigerant cycle of a chiller in main operation mode | |
Modelica definition
model RefrigerantCycleHeatRecovery
"Refrigerant cycle model for cooling-only or heat recovery chiller models"
extends Buildings.Fluid.HeatPumps.ModularReversible.BaseClasses.PartialModularRefrigerantCycle(
use_rev=false);
parameter Boolean have_switchover=false
"Set to true for heat recovery chiller with built-in switchover";
replaceable model RefrigerantCycleChillerCooling=Buildings.Fluid.Chillers.ModularReversible.RefrigerantCycle.BaseClasses.NoCooling(
useInChi=true)
constrainedby Buildings.Fluid.Chillers.ModularReversible.RefrigerantCycle.BaseClasses.PartialChillerCycle
"Replaceable model for refrigerant cycle of a chiller in main operation mode";
final model RefrigerantCycleChillerHeating=Buildings.Fluid.HeatPumps.ModularReversible.RefrigerantCycle.BaseClasses.NoHeating(
useInHeaPum=false)
"Model for refrigerant cycle of a chiller in reversed operation mode";
RefrigerantCycleChillerCooling refCycChiCoo
"Refrigerant cycle instance for cooling";
protected
parameter String devIde=refCycChiCoo.devIde
"Data source for refrigerant cycle";
Buildings.Controls.OBC.CDL.Logical.Sources.Constant tru(
k=true)
"Placeholder signal to allow using coo variable with use_rev=false";
equation
connect(pasTrhModSet.u, tru.y);
connect(sigBus, refCycChiCoo.sigBus);
connect(swiPEle.u2, sigBus.coo);
connect(swiQEva.u2, sigBus.coo);
connect(swiQCon.u2, sigBus.coo);
connect(refCycChiCoo.QEva_flow, swiQEva.u1);
connect(refCycChiCoo.QCon_flow, swiQCon.u1);
connect(refCycChiCoo.PEle, swiPEle.u1);
connect(refCycChiCoo.QCon_flow, swiQCon.u3);
connect(refCycChiCoo.QEva_flow, swiQEva.u3);
connect(refCycChiCoo.PEle, swiPEle.u3);
end RefrigerantCycleHeatRecovery;
Buildings.Fluid.Chillers.ModularReversible.BaseClasses.RefrigerantCycle.RefrigerantCycleChillerCooling
Replaceable model for refrigerant cycle of a chiller in main operation mode
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| String | devIde | "NoCooling" | Indicates the data source, used to warn users about different vapor compression devices in reversible models |
| Boolean | useInChi | true | =false to indicate that this model is used as a heat pump |
| Nominal condition | |||
| Power | PEle_nominal | 0 | Nominal electrical power consumption [W] |
| Temperature | TCon_nominal | 273.15 | Nominal temperature at secondary condenser side [K] |
| Temperature | TEva_nominal | 273.15 | Nominal temperature at secondary evaporator side [K] |
| HeatFlowRate | QCoo_flow_nominal | 0 | Nominal cooling capacity [W] |
| Advanced | |||
| Medium properties | |||
| SpecificHeatCapacity | cpCon | 4184 | Evaporator medium specific heat capacity [J/(kg.K)] |
| SpecificHeatCapacity | cpEva | 4184 | Evaporator medium specific heat capacity [J/(kg.K)] |
Connectors
| Type | Name | Description |
|---|---|---|
| output RealOutput | PEle | Electrical Power consumed by the device [W] |
| output RealOutput | QCon_flow | Heat flow rate through condenser [W] |
| RefrigerantMachineControlBus | sigBus | Bus-connector |
| output RealOutput | QEva_flow | Heat flow rate through evaporator [W] |
Modelica definition
replaceable model RefrigerantCycleChillerCooling =
Buildings.Fluid.Chillers.ModularReversible.RefrigerantCycle.BaseClasses.NoCooling(
useInChi=true)
constrainedby Buildings.Fluid.Chillers.ModularReversible.RefrigerantCycle.BaseClasses.PartialChillerCycle
"Replaceable model for refrigerant cycle of a chiller in main operation mode";
Buildings.Fluid.Chillers.ModularReversible.BaseClasses.RefrigerantCycle.RefrigerantCycleChillerHeating
Replaceable model for refrigerant cycle of a chiller in reversed operation mode
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| String | devIde | "NoHeating" | Indicates the data source, used to warn users about different vapor compression devices in reversible models |
| Boolean | useInHeaPum | true | =false to indicate that this model is used in a chiller |
| Nominal condition | |||
| Power | PEle_nominal | 0 | Nominal electrical power consumption [W] |
| Temperature | TCon_nominal | 273.15 | Nominal temperature at secondary condenser side [K] |
| Temperature | TEva_nominal | 273.15 | Nominal temperature at secondary evaporator side [K] |
| HeatFlowRate | QHea_flow_nominal | 0 | Nominal heating capacity [W] |
| Advanced | |||
| Medium properties | |||
| SpecificHeatCapacity | cpCon | 4184 | Evaporator medium specific heat capacity [J/(kg.K)] |
| SpecificHeatCapacity | cpEva | 4184 | Evaporator medium specific heat capacity [J/(kg.K)] |
Connectors
| Type | Name | Description |
|---|---|---|
| output RealOutput | PEle | Electrical Power consumed by the device [W] |
| output RealOutput | QCon_flow | Heat flow rate through condenser [W] |
| RefrigerantMachineControlBus | sigBus | Bus-connector |
| output RealOutput | QEva_flow | Heat flow rate through evaporator [W] |
Modelica definition
replaceable model RefrigerantCycleChillerHeating =
Buildings.Fluid.HeatPumps.ModularReversible.RefrigerantCycle.BaseClasses.NoHeating(
useInHeaPum=true)
constrainedby Buildings.Fluid.HeatPumps.ModularReversible.RefrigerantCycle.BaseClasses.PartialHeatPumpCycle
"Replaceable model for refrigerant cycle of a chiller in reversed operation mode";
Buildings.Fluid.Chillers.ModularReversible.BaseClasses.RefrigerantCycleHeatRecovery.RefrigerantCycleChillerCooling
Replaceable model for refrigerant cycle of a chiller in main operation mode
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| String | devIde | "NoCooling" | Indicates the data source, used to warn users about different vapor compression devices in reversible models |
| Boolean | useInChi | true | =false to indicate that this model is used as a heat pump |
| Nominal condition | |||
| Power | PEle_nominal | 0 | Nominal electrical power consumption [W] |
| Temperature | TCon_nominal | 273.15 | Nominal temperature at secondary condenser side [K] |
| Temperature | TEva_nominal | 273.15 | Nominal temperature at secondary evaporator side [K] |
| HeatFlowRate | QCoo_flow_nominal | 0 | Nominal cooling capacity [W] |
| Advanced | |||
| Medium properties | |||
| SpecificHeatCapacity | cpCon | 4184 | Evaporator medium specific heat capacity [J/(kg.K)] |
| SpecificHeatCapacity | cpEva | 4184 | Evaporator medium specific heat capacity [J/(kg.K)] |
Connectors
| Type | Name | Description |
|---|---|---|
| output RealOutput | PEle | Electrical Power consumed by the device [W] |
| output RealOutput | QCon_flow | Heat flow rate through condenser [W] |
| RefrigerantMachineControlBus | sigBus | Bus-connector |
| output RealOutput | QEva_flow | Heat flow rate through evaporator [W] |
Modelica definition
replaceable model RefrigerantCycleChillerCooling=Buildings.Fluid.Chillers.ModularReversible.RefrigerantCycle.BaseClasses.NoCooling(
useInChi=true)
constrainedby Buildings.Fluid.Chillers.ModularReversible.RefrigerantCycle.BaseClasses.PartialChillerCycle
"Replaceable model for refrigerant cycle of a chiller in main operation mode";