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Buildings.DHC.ETS.Combined.Subsystems.Validation

Collection of validation models

Information

This package contains validation models for the classes in Buildings.DHC.ETS.Combined.Subsystems.

Extends from Modelica.Icons.ExamplesPackage (Icon for packages containing runnable examples).

Package Content

Name Description
Buildings.DHC.ETS.Combined.Subsystems.Validation.HeatExchanger HeatExchanger Validation of the base subsystem model with district heat exchanger
Buildings.DHC.ETS.Combined.Subsystems.Validation.HeatPump HeatPump Validation of the base subsystem model with heat pump
Buildings.DHC.ETS.Combined.Subsystems.Validation.HeatPumpDHWTank HeatPumpDHWTank Validation of the base subsystem model with domestic hot water tank and heat pump
Buildings.DHC.ETS.Combined.Subsystems.Validation.SwitchBox SwitchBox Validation of flow switch box
Buildings.DHC.ETS.Combined.Subsystems.Validation.WatersideEconomizer WatersideEconomizer Validation of the base subsystem model with waterside economizer

Buildings.DHC.ETS.Combined.Subsystems.Validation.HeatExchanger Buildings.DHC.ETS.Combined.Subsystems.Validation.HeatExchanger

Validation of the base subsystem model with district heat exchanger

Buildings.DHC.ETS.Combined.Subsystems.Validation.HeatExchanger

Information

This model validates Buildings.DHC.ETS.Combined.Subsystems.HeatExchanger in a configuration where the primary flow rate is modulated by means of a two-way valve (see hexVal), and in a configuration where the primary flow rate is modulated by means of a variable speed pump (see hexPum).

Extends from Modelica.Icons.Example (Icon for runnable examples).

Modelica definition

model HeatExchanger "Validation of the base subsystem model with district heat exchanger" extends Modelica.Icons.Example; package Medium=Buildings.Media.Water "Medium model"; Buildings.Fluid.Sources.Boundary_pT bou1Pum( redeclare package Medium = Medium, use_T_in=true, nPorts=2) "Primary boundary conditions"; Buildings.Fluid.Sources.Boundary_pT bou2( redeclare package Medium = Medium, use_T_in=true, nPorts=4) "Secondary boundary conditions"; Modelica.Blocks.Sources.BooleanExpression uHeaRej( y=time >= 3000) "Heat rejection enable signal"; Modelica.Blocks.Sources.BooleanExpression uEnaColRej( y=time >= 1000 and time < 3000) "Cold rejection enable signal"; Buildings.DHC.ETS.Combined.Subsystems.HeatExchanger hexPum( redeclare final package Medium1 = Medium, redeclare final package Medium2 = Medium, show_T=true, conCon=Buildings.DHC.ETS.Types.ConnectionConfiguration.Pump, dp1Hex_nominal=20E3, dp2Hex_nominal=20E3, Q_flow_nominal=1E6, T_a1_nominal=281.15, T_b1_nominal=277.15, T_a2_nominal=275.15, T_b2_nominal=279.15) "Heat exchanger with primary pump"; Buildings.Controls.OBC.CDL.Reals.Switch swi "Switch secondary temperature value depending on heat/cold rejection mode"; Buildings.Fluid.Sensors.TemperatureTwoPort senT1OutPum(redeclare final package Medium = Medium, m_flow_nominal=hexPum.m1_flow_nominal) "Primary outlet temperature"; Buildings.Fluid.Sensors.TemperatureTwoPort senT1InlPum(redeclare final package Medium = Medium, m_flow_nominal=hexPum.m1_flow_nominal) "Primary inlet temperature"; Buildings.Fluid.Sensors.TemperatureTwoPort senT2OutPum(redeclare final package Medium = Medium, m_flow_nominal=hexPum.m2_flow_nominal) "Secondary outlet temperature"; Buildings.Fluid.Sensors.TemperatureTwoPort senT2InlPum(redeclare final package Medium = Medium, m_flow_nominal=hexPum.m2_flow_nominal) "Secondary inlet temperature"; Buildings.DHC.ETS.Combined.Subsystems.HeatExchanger hexVal( redeclare final package Medium1 = Medium, redeclare final package Medium2 = Medium, show_T=true, conCon=Buildings.DHC.ETS.Types.ConnectionConfiguration.TwoWayValve, dp1Hex_nominal=20E3, dp2Hex_nominal=20E3, Q_flow_nominal=1E6, T_a1_nominal=281.15, T_b1_nominal=277.15, T_a2_nominal=275.15, T_b2_nominal=279.15) "Heat exchanger with primary control valve"; Buildings.Fluid.Sources.Boundary_pT bou1InlVal( redeclare package Medium = Medium, p=Medium.p_default + 30E3, use_T_in=true, nPorts=1) "Primary boundary conditions"; Buildings.Fluid.Sources.Boundary_pT bou1OutVal(redeclare package Medium = Medium, nPorts=1) "Primary boundary conditions"; Buildings.Fluid.Sensors.TemperatureTwoPort senT1InlVal(redeclare final package Medium = Medium, m_flow_nominal=hexVal.m1_flow_nominal) "Primary inlet temperature"; Buildings.Fluid.Sensors.TemperatureTwoPort senT1OutVal(redeclare final package Medium = Medium, m_flow_nominal=hexVal.m1_flow_nominal) "Primary outlet temperature"; Buildings.Fluid.Sensors.TemperatureTwoPort senT2OutVal(redeclare final package Medium = Medium, m_flow_nominal=hexVal.m2_flow_nominal) "Secondary outlet temperature"; Buildings.Fluid.Sensors.TemperatureTwoPort senT2InlVal(redeclare final package Medium = Medium, m_flow_nominal=hexVal.m2_flow_nominal) "Secondary inlet temperature"; Buildings.Controls.OBC.CDL.Logical.MultiOr mulOr(nin=4) "Compute enable signal for heat/cold rejection"; Modelica.Blocks.Sources.BooleanExpression yValIsoCon(y=time >= 2500) "Condenser loop isolation valve opening"; Modelica.Blocks.Sources.BooleanExpression yValIsoEva(y=time >= 500) "Evaporator loop isolation valve opening"; Modelica.Blocks.Sources.TimeTable TColVal( y(final unit="K", displayUnit="degC"), table=[ 0,6; 2,6; 3,16; 4.5,16; 5,6; 10,6], timeScale=1000, offset=273.15) "Cold side temperature values"; Modelica.Blocks.Sources.TimeTable THotVal( y(final unit="K", displayUnit="degC"), table=[ 0,45; 2,45; 3,55; 4.5,55; 5,25; 10,25], timeScale=1000, offset=273.15) "Hot side temperature values"; Modelica.Blocks.Sources.TimeTable TSerWat( y(final unit="K", displayUnit="degC"), table=[ 0,8; 1,8; 2,13; 3,18; 4,6; 5,18], timeScale=1000, offset=273.15) "Service water temperature values"; equation connect(swi.y, bou2.T_in); connect(uEnaColRej.y,swi.u2); connect(hexPum.port_b1,senT1OutPum.port_a); connect(senT1OutPum.port_b, bou1Pum.ports[1]); connect(hexPum.port_a1,senT1InlPum.port_b); connect(senT1InlPum.port_a, bou1Pum.ports[2]); connect(hexPum.port_b2,senT2OutPum.port_a); connect(senT2OutPum.port_b, bou2.ports[1]); connect(bou2.ports[2], senT2InlPum.port_a); connect(senT2InlPum.port_b,hexPum.port_a2); connect(hexVal.port_a1,senT1InlVal.port_b); connect(senT1InlVal.port_a, bou1InlVal.ports[1]); connect(bou1OutVal.ports[1], senT1OutVal.port_b); connect(senT1OutVal.port_a,hexVal.port_b1); connect(hexVal.port_a2,senT2InlVal.port_b); connect(senT2OutVal.port_a,hexVal.port_b2); connect(TColVal.y,swi.u1); connect(THotVal.y,swi.u3); connect(TSerWat.y, bou1Pum.T_in); connect(TSerWat.y, bou1InlVal.T_in); connect(senT2OutVal.port_b, bou2.ports[3]); connect(bou2.ports[4], senT2InlVal.port_a); connect(uHeaRej.y, mulOr.u[1]); connect(uEnaColRej.y, mulOr.u[2]); connect(yValIsoCon.y, mulOr.u[3]); connect(yValIsoEva.y, mulOr.u[4]); connect(mulOr.y, hexVal.on); connect(mulOr.y, hexPum.on); end HeatExchanger;

Buildings.DHC.ETS.Combined.Subsystems.Validation.HeatPump Buildings.DHC.ETS.Combined.Subsystems.Validation.HeatPump

Validation of the base subsystem model with heat pump

Buildings.DHC.ETS.Combined.Subsystems.Validation.HeatPump

Information

This model validates Buildings.DHC.ETS.Combined.Subsystems.HeatPump.

Extends from Modelica.Icons.Example (Icon for runnable examples).

Parameters

TypeNameDefaultDescription
TemperatureTCon_nominal273.15 + 30Nominal condenser outlet temperature [K]
TemperatureTAmb_nominal273.15 + 15Nominal ambient loop temperature to evaporator [K]
PowerQLoa_nominal1000Nominal load [W]

Modelica definition

model HeatPump "Validation of the base subsystem model with heat pump" extends Modelica.Icons.Example; package Medium=Buildings.Media.Water "Medium model"; parameter Modelica.Units.SI.Temperature TCon_nominal = 273.15+30 "Nominal condenser outlet temperature"; parameter Modelica.Units.SI.Temperature TAmb_nominal = 273.15+15 "Nominal ambient loop temperature to evaporator"; parameter Modelica.Units.SI.Power QLoa_nominal = 1000 "Nominal load"; Buildings.DHC.ETS.Combined.Subsystems.HeatPump heaPum( redeclare package Medium1 = Medium, redeclare package Medium2 = Medium, COP_nominal=2.3, TCon_nominal=TCon_nominal, TEva_nominal(displayUnit="K") = TAmb_nominal - heaPum.dT_nominal, dp1_nominal=6000, dp2_nominal=6000, Q1_flow_nominal=QLoa_nominal); Fluid.Sources.Boundary_pT supAmb( redeclare package Medium = Medium, p(displayUnit="bar"), T=TAmb_nominal, nPorts=1) "Ambient water supply"; Fluid.Sources.Boundary_pT sinAmb( redeclare package Medium = Medium, p(displayUnit="bar"), nPorts=1) "Sink for ambient water"; Fluid.Sources.Boundary_pT souLoa( redeclare final package Medium = Medium, T=TCon_nominal - heaPum.dT_nominal, nPorts=1) "Source for load (return from load)"; Modelica.Blocks.Sources.Sine sin(f=1/(86400/2)) "Load signal"; Modelica.Blocks.Nonlinear.Limiter limiter(uMax=1, uMin=0); Modelica.Blocks.Math.Gain gain(k=QLoa_nominal/(4200*5)); Modelica.Blocks.Sources.Step TSetCon( height=-2, offset=TCon_nominal, startTime=86400/2) "Set point of condenser outlet"; Fluid.Sources.Boundary_pT sinLoa(redeclare final package Medium = Medium, nPorts=1) "Sink for load"; Buildings.Controls.OBC.CDL.Reals.GreaterThreshold enaHea(t=1e-4) "Threshold comparison to enable heating"; Fluid.Sensors.TemperatureTwoPort senTLoaSup( redeclare final package Medium = Medium, final m_flow_nominal=QLoa_nominal/(4200*5), tau=0) "Load supply temperature sensor"; Fluid.Sensors.MassFlowRate senMasFloAmb(redeclare package Medium = Medium) "Mass flow rate sensor for ambient loop"; equation connect(sinAmb.ports[1], heaPum.port_b2); connect(sin.y, limiter.u); connect(limiter.y, gain.u); connect(heaPum.m1_flow, gain.y); connect(TSetCon.y, heaPum.TSupSet); connect(souLoa.ports[1], heaPum.port_a1); connect(enaHea.y, heaPum.uEna); connect(limiter.y, enaHea.u); connect(sinLoa.ports[1], senTLoaSup.port_b); connect(senTLoaSup.port_a, heaPum.port_b1); connect(heaPum.port_a2, senMasFloAmb.port_b); connect(senMasFloAmb.port_a, supAmb.ports[1]); end HeatPump;

Buildings.DHC.ETS.Combined.Subsystems.Validation.HeatPumpDHWTank Buildings.DHC.ETS.Combined.Subsystems.Validation.HeatPumpDHWTank

Validation of the base subsystem model with domestic hot water tank and heat pump

Buildings.DHC.ETS.Combined.Subsystems.Validation.HeatPumpDHWTank

Information

This model validates Buildings.DHC.ETS.Combined.Subsystems.HeatPumpDHWTank.

Extends from Modelica.Icons.Example (Icon for runnable examples).

Parameters

TypeNameDefaultDescription
TemperatureDifferencedT_nominal5Nominal temperature difference across heat pump condensor and district supply/return water [K]
TemperatureTDisSup_nominal273.15 + 15Nominal district supply water temperature [K]
GenericDomesticHotWaterWithHeatExchangerdatWatHeadatWatHea(VTan=0.1892706, mD...Data for heat pump water heater with tank

Modelica definition

model HeatPumpDHWTank "Validation of the base subsystem model with domestic hot water tank and heat pump" extends Modelica.Icons.Example; package Medium=Buildings.Media.Water "Medium model"; parameter Modelica.Units.SI.TemperatureDifference dT_nominal = 5 "Nominal temperature difference across heat pump condensor and district supply/return water"; parameter Modelica.Units.SI.Temperature TDisSup_nominal = 273.15 + 15 "Nominal district supply water temperature"; Buildings.DHC.ETS.Combined.Subsystems.HeatPumpDHWTank heaPum( redeclare package Medium1 = Medium, redeclare package Medium2 = Medium, datWatHea=datWatHea, COP_nominal=2.3, TCon_nominal=datWatHea.TDom_nominal + datWatHea.dTHexApp_nominal + dT_nominal, TEva_nominal(displayUnit="K") = TDisSup_nominal - dT_nominal, QHotWat_flow_nominal=datWatHea.QHex_flow_nominal, dT_nominal=dT_nominal, dp1_nominal=6000, dp2_nominal=6000); Fluid.Sources.Boundary_pT supAmbWat( redeclare package Medium = Medium, p(displayUnit="bar"), use_T_in=true, T=280.15, nPorts=1) "Ambient water supply"; Fluid.Sources.Boundary_pT sinAmbWat( redeclare package Medium = Medium, p(displayUnit="bar"), nPorts=1) "Sink for ambient water"; Fluid.Sensors.MassFlowRate senMasFlo(redeclare package Medium = Medium) "Mass flow rate sensor"; Modelica.Blocks.Sources.Constant TDisSup(k = TDisSup_nominal) "District supply temperature"; Fluid.Sources.Boundary_pT souDCW( redeclare final package Medium = Medium, T=283.15, nPorts=1) "Source for domestic cold water"; Buildings.DHC.ETS.BaseClasses.Junction dcwSpl( redeclare final package Medium = Medium, final m_flow_nominal=6000*{1,-1, -1}) "Splitter for domestic cold water"; Modelica.Blocks.Sources.CombiTimeTable sch( tableOnFile=true, tableName="tab1", fileName=Modelica.Utilities.Files.loadResource("modelica://Buildings/Resources/Data/DHC/Loads/HotWater/DHW_ApartmentMidRise.mos"), smoothness=Modelica.Blocks.Types.Smoothness.ContinuousDerivative, extrapolation=Modelica.Blocks.Types.Extrapolation.Periodic) "Domestic hot water fixture draw fraction schedule"; Modelica.Blocks.Sources.Constant conTSetMix(k( final unit="K", displayUnit="degC") = 308.15) "Temperature setpoint for mixed water supply to fixture"; Loads.HotWater.ThermostaticMixingValve theMixVal(redeclare package Medium = Medium, mMix_flow_nominal=1.2*datWatHea.mDom_flow_nominal); parameter Loads.HotWater.Data.GenericDomesticHotWaterWithHeatExchanger datWatHea(VTan=0.1892706, mDom_flow_nominal=6.52944E-06*1000) "Data for heat pump water heater with tank"; Modelica.Blocks.Sources.BooleanConstant on "Enable"; equation connect(TDisSup.y,supAmbWat. T_in); connect(supAmbWat.ports[1], senMasFlo.port_a); connect(senMasFlo.port_b, heaPum.port_a2); connect(sinAmbWat.ports[1], heaPum.port_b2); connect(dcwSpl.port_1, souDCW.ports[1]); connect(dcwSpl.port_3, heaPum.port_a1); connect(sch.y[1], theMixVal.yMixSet); connect(conTSetMix.y, theMixVal.TMixSet); connect(dcwSpl.port_2, theMixVal.port_col); connect(theMixVal.port_hot, heaPum.port_b1); connect(on.y, heaPum.uEna); end HeatPumpDHWTank;

Buildings.DHC.ETS.Combined.Subsystems.Validation.SwitchBox Buildings.DHC.ETS.Combined.Subsystems.Validation.SwitchBox

Validation of flow switch box

Buildings.DHC.ETS.Combined.Subsystems.Validation.SwitchBox

Information

This model validates that Buildings.DHC.ETS.Combined.Subsystems.SwitchBox maintains a positive flow rate in the district line outside of the temporization period set by the controller.

Extends from Modelica.Icons.Example (Icon for runnable examples).

Parameters

TypeNameDefaultDescription
MassFlowRatem_flow_nominal1Nominal water mass flow rate [kg/s]

Modelica definition

model SwitchBox "Validation of flow switch box" extends Modelica.Icons.Example; package Medium=Buildings.Media.Water "Medium model"; parameter Modelica.Units.SI.MassFlowRate m_flow_nominal=1 "Nominal water mass flow rate"; Fluid.Delays.DelayFirstOrder volSup( redeclare final package Medium = Medium, energyDynamics=Modelica.Fluid.Types.Dynamics.SteadyStateInitial, final m_flow_nominal=m_flow_nominal, tau=60, nPorts=3) "Mixing volume supply"; Fluid.Delays.DelayFirstOrder volRet( redeclare final package Medium = Medium, energyDynamics=Modelica.Fluid.Types.Dynamics.SteadyStateInitial, final m_flow_nominal=m_flow_nominal, tau=60, nPorts=3) "Mixing volume return"; Buildings.DHC.ETS.BaseClasses.Pump_m_flow pum1( redeclare package Medium = Medium, final m_flow_nominal=m_flow_nominal) "Chilled water HX secondary pump"; Buildings.DHC.ETS.BaseClasses.Pump_m_flow pum2( redeclare package Medium = Medium, final m_flow_nominal=m_flow_nominal) "Chilled water HX secondary pump"; Buildings.DHC.ETS.Combined.Subsystems.SwitchBox floSwiBox(final m_flow_nominal=m_flow_nominal, redeclare final package Medium = Medium, trueHoldDuration=300) "Flow switch box"; Fluid.Sensors.MassFlowRate senMasFlo( redeclare final package Medium = Medium) "District water mass flow rate"; Buildings.Controls.OBC.CDL.Reals.Sources.Constant setMasFlo1(k=0.5) "Set point for mass flow rate (normalized)"; Fluid.Sources.Boundary_pT disWatBou(redeclare package Medium = Medium, nPorts=2) "District water boundary conditions"; Modelica.Blocks.Sources.CombiTimeTable setMasFlo2( tableName="tab1", table=[0,0; 0.6,1; 0.7,0; 1,1], extrapolation=Modelica.Blocks.Types.Extrapolation.Periodic, columns={2}, timeScale=1000) "Set point for mass flow rate (normalized)"; Buildings.Controls.OBC.CDL.Reals.MultiplyByParameter gai2(final k= m_flow_nominal) "Scale with nominal mass flow rate"; Buildings.Controls.OBC.CDL.Reals.MultiplyByParameter gai1(final k= m_flow_nominal) "Scale with nominal mass flow rate"; equation connect(pum1.port_b, volSup.ports[1]); connect(volSup.ports[2], pum2.port_a); connect(pum2.port_b, volRet.ports[1]); connect(volRet.ports[2], pum1.port_a); connect(floSwiBox.port_bSup, volSup.ports[3]); connect(floSwiBox.port_aRet, volRet.ports[3]); connect(floSwiBox.port_bRet, senMasFlo.port_a); connect(senMasFlo.port_b, disWatBou.ports[1]); connect(disWatBou.ports[2], floSwiBox.port_aSup); connect(pum1.m_flow_actual, floSwiBox.mRev_flow); connect(setMasFlo2.y[1], gai2.u); connect(gai2.y, pum2.m_flow_in); connect(setMasFlo1.y, gai1.u); connect(gai1.y, pum1.m_flow_in); connect(pum2.m_flow_actual, floSwiBox.mPos_flow); end SwitchBox;

Buildings.DHC.ETS.Combined.Subsystems.Validation.WatersideEconomizer Buildings.DHC.ETS.Combined.Subsystems.Validation.WatersideEconomizer

Validation of the base subsystem model with waterside economizer

Buildings.DHC.ETS.Combined.Subsystems.Validation.WatersideEconomizer

Information

This model validates Buildings.DHC.ETS.Combined.Subsystems.WatersideEconomizer in a configuration where the primary flow rate is modulated by means of a two-way valve (see hexVal), and in a configuration where the primary flow rate is modulated by means of a variable speed pump (see hexPum).

Extends from Modelica.Icons.Example (Icon for runnable examples).

Modelica definition

model WatersideEconomizer "Validation of the base subsystem model with waterside economizer" extends Modelica.Icons.Example; package Medium=Buildings.Media.Water "Medium model"; Buildings.Fluid.Sources.Boundary_pT bou1Pum( redeclare package Medium = Medium, use_T_in=true, nPorts=2) "Primary boundary conditions"; Buildings.Fluid.Movers.FlowControlled_dp pum2Pum( redeclare package Medium = Medium, energyDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial, m_flow_nominal=hexPum.m2_flow_nominal, addPowerToMedium=false, nominalValuesDefineDefaultPressureCurve=true, dp_nominal=25E4) "CHW pump"; Modelica.Blocks.Sources.BooleanExpression uCoo(y=time >= 1000) "Cooling enable signal"; Buildings.DHC.ETS.Combined.Subsystems.WatersideEconomizer hexPum( redeclare final package Medium1=Medium, redeclare final package Medium2=Medium, show_T=true, conCon=Buildings.DHC.ETS.Types.ConnectionConfiguration.Pump, dp1Hex_nominal=3E4, dp2Hex_nominal=3E4, Q_flow_nominal=-1E6, T_a1_nominal=281.15, T_b1_nominal=291.15, T_a2_nominal=293.15, T_b2_nominal=283.15) "Heat exchanger with primary pump"; Buildings.Fluid.Sensors.TemperatureTwoPort senT1OutPum(redeclare final package Medium = Medium, m_flow_nominal=hexPum.m1_flow_nominal) "Primary outlet temperature"; Buildings.Fluid.Sensors.TemperatureTwoPort senT1InlPum(redeclare final package Medium = Medium, m_flow_nominal=hexPum.m1_flow_nominal) "Primary inlet temperature"; Buildings.Fluid.Sensors.TemperatureTwoPort senT2OutPum(redeclare final package Medium = Medium, m_flow_nominal=hexPum.m2_flow_nominal) "Secondary outlet temperature"; Buildings.Fluid.Sensors.TemperatureTwoPort senT2InlPum(redeclare final package Medium = Medium, m_flow_nominal=hexPum.m2_flow_nominal) "Secondary inlet temperature"; Buildings.DHC.ETS.Combined.Subsystems.WatersideEconomizer hexVal( redeclare final package Medium1=Medium, redeclare final package Medium2=Medium, show_T=true, conCon=Buildings.DHC.ETS.Types.ConnectionConfiguration.TwoWayValve, dp1Hex_nominal=3E4, dp2Hex_nominal=3E4, Q_flow_nominal=-1E6, T_a1_nominal=281.15, T_b1_nominal=291.15, T_a2_nominal=293.15, T_b2_nominal=283.15) "Heat exchanger with primary control valve"; Buildings.Fluid.Sources.Boundary_pT bou1InlVal( redeclare package Medium = Medium, p=Medium.p_default + 45E3, use_T_in=true, nPorts=1) "Primary boundary conditions"; Buildings.Fluid.Sources.Boundary_pT bou1OutVal(redeclare package Medium = Medium, nPorts=1) "Primary boundary conditions"; Buildings.Fluid.Sensors.TemperatureTwoPort senT1InlVal(redeclare final package Medium = Medium, m_flow_nominal=hexVal.m1_flow_nominal) "Primary inlet temperature"; Buildings.Fluid.Sensors.TemperatureTwoPort senT1OutVal(redeclare final package Medium = Medium, m_flow_nominal=hexVal.m1_flow_nominal) "Primary outlet temperature"; Buildings.Fluid.Sensors.TemperatureTwoPort senT2OutVal(redeclare final package Medium = Medium, m_flow_nominal=hexVal.m2_flow_nominal) "Secondary outlet temperature"; Buildings.Fluid.Sensors.TemperatureTwoPort senT2InlVal(redeclare final package Medium = Medium, m_flow_nominal=hexVal.m2_flow_nominal) "Secondary inlet temperature"; Buildings.Fluid.Sensors.RelativePressure senRelPre(redeclare final package Medium = Medium); Modelica.Blocks.Sources.TimeTable TChiWatRet( y(final unit="K", displayUnit="degC"), table=[0,10; 2,15; 3,16; 4.5,16; 5,13; 10,9], timeScale=1000, offset=273.15) "Chilled water return temperature values"; Modelica.Blocks.Sources.TimeTable TSerWat( y(final unit="K", displayUnit="degC"), table=[ 0,8; 1,8; 2,13; 3,18; 4,6; 5,18], timeScale=1000, offset=273.15) "Service water temperature values"; Buildings.Fluid.Sources.Boundary_pT bou2( redeclare package Medium = Medium, use_T_in=true, nPorts=4) "Secondary boundary conditions"; Buildings.Fluid.FixedResistances.PressureDrop resPum( redeclare package Medium = Medium, m_flow_nominal=hexPum.m2_flow_nominal, dp_nominal=20E4) "Pipe flow resistance"; Buildings.Controls.OBC.CDL.Reals.Sources.Ramp dpSet( height=15E4, duration=1000, offset=10E4, startTime=1500) "Differential pressure set point"; Buildings.Fluid.Movers.FlowControlled_dp pum2Val( redeclare package Medium = Medium, energyDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial, m_flow_nominal=hexPum.m2_flow_nominal, addPowerToMedium=false, nominalValuesDefineDefaultPressureCurve=true, dp_nominal=25E4) "CHW pump"; Buildings.Fluid.FixedResistances.PressureDrop resVal( redeclare package Medium = Medium, m_flow_nominal=hexPum.m2_flow_nominal, dp_nominal=20E4) "Pipe flow resistance"; Modelica.Blocks.Sources.RealExpression yEva(y=0) "Isolation valve signal"; equation connect(hexPum.port_b1,senT1OutPum.port_a); connect(senT1OutPum.port_b, bou1Pum.ports[1]); connect(hexPum.port_a1,senT1InlPum.port_b); connect(senT1InlPum.port_a, bou1Pum.ports[2]); connect(hexPum.port_b2,senT2OutPum.port_a); connect(senT2InlPum.port_b,hexPum.port_a2); connect(hexVal.port_a1,senT1InlVal.port_b); connect(senT1InlVal.port_a, bou1InlVal.ports[1]); connect(bou1OutVal.ports[1], senT1OutVal.port_b); connect(senT1OutVal.port_a,hexVal.port_b1); connect(hexVal.port_a2,senT2InlVal.port_b); connect(senT2OutVal.port_a,hexVal.port_b2); connect(hexVal.port_a1,senRelPre.port_a); connect(senRelPre.port_b,senT1OutVal.port_a); connect(TSerWat.y, bou1Pum.T_in); connect(TSerWat.y, bou1InlVal.T_in); connect(uCoo.y, hexVal.uCoo); connect(uCoo.y, hexPum.uCoo); connect(bou2.ports[1], senT2InlVal.port_a); connect(TChiWatRet.y, bou2.T_in); connect(pum2Pum.port_a, senT2OutPum.port_b); connect(resPum.port_a, pum2Pum.port_b); connect(dpSet.y, pum2Pum.dp_in); connect(senT2OutVal.port_b, pum2Val.port_a); connect(pum2Val.port_b, resVal.port_a); connect(dpSet.y, pum2Val.dp_in); connect(resVal.port_b, bou2.ports[2]); connect(yEva.y, hexVal.yValIsoEva_actual); connect(yEva.y, hexPum.yValIsoEva_actual); connect(bou2.ports[3], resPum.port_b); connect(senT2InlPum.port_a, bou2.ports[4]); end WatersideEconomizer;