Buildings.Examples.VAVCO2.BaseClasses

Package with base classes for example models

Information

Extends from Modelica.Fluid.Icons.BaseClassLibrary (Icon for library).

Package Content

NameDescription
Buildings.Examples.VAVCO2.BaseClasses.DamperControl DamperControl Local loop controller for damper
Buildings.Examples.VAVCO2.BaseClasses.Occupancy Occupancy Model for occupancy
Buildings.Examples.VAVCO2.BaseClasses.RoomLeakage RoomLeakage Room leakage model
Buildings.Examples.VAVCO2.BaseClasses.RoomVAV RoomVAV Model for CO2 emitted by people
Buildings.Examples.VAVCO2.BaseClasses.Suite Suite Model of a suite consisting of five rooms of the MIT system model

Buildings.Examples.VAVCO2.BaseClasses.DamperControl Buildings.Examples.VAVCO2.BaseClasses.DamperControl

Local loop controller for damper

Buildings.Examples.VAVCO2.BaseClasses.DamperControl

Information

Extends from Modelica.Blocks.Interfaces.SISO (Single Input Single Output continuous control block).

Parameters

TypeNameDefaultDescription
RealCO2Set700E-6CO2 set point in volume fraction
RealKp10Proportional gain

Connectors

TypeNameDescription
input RealInputuConnector of Real input signal
output RealOutputyConnector of Real output signal

Modelica definition

block DamperControl "Local loop controller for damper"
  extends Modelica.Blocks.Interfaces.SISO;
  parameter Real CO2Set = 700E-6 "CO2 set point in volume fraction";
  parameter Real Kp = 10 "Proportional gain";
protected 
  Modelica.Blocks.Sources.Constant xSetNor(k=1) "CO2 set point (normalized)";
public 
  Buildings.Controls.Continuous.LimPID con(
    yMin=0,
    initType=Modelica.Blocks.Types.Init.InitialOutput,
    y_start=0.5,
    Ti=1,
    controllerType=Modelica.Blocks.Types.SimpleController.P,
    k=Kp,
    limiter(u(start=0.75)),
    yMax=1,
    reverseAction=true,
    Td=60);
protected 
  Modelica.Blocks.Math.Gain gain1(k=1/CO2Set) 
    "Gain. Division by CO2Set is to normalize the control error";
equation 

  connect(con.y, y);
  connect(xSetNor.y, con.u_s);
  connect(gain1.y, con.u_m);
  connect(u, gain1.u);
end DamperControl;

Buildings.Examples.VAVCO2.BaseClasses.Occupancy Buildings.Examples.VAVCO2.BaseClasses.Occupancy

Model for occupancy

Buildings.Examples.VAVCO2.BaseClasses.Occupancy

Connectors

TypeNameDescription
output RealOutputy1[2]Connector of Real output signals
output RealOutputy2[2]Connector of Real output signals
output RealOutputy3[2]Connector of Real output signals

Modelica definition

model Occupancy "Model for occupancy"

  Modelica.Blocks.Sources.CombiTimeTable office1(
    extrapolation=Modelica.Blocks.Types.Extrapolation.Periodic,
    tableOnFile=false,
    table=[0.0,0.0; 8*3600,0;
           8*3600,2; 9*3600,2;
           9*3600,3; 12*3600,3;
           12*3600, 2; 13*3600,2;
           13*3600,6; 15*3600,6;
           15*3600,3; 16*3600,3;
           16*3600,4; 18*3600,4;
    18*3600,0; 24*3600,0]) "Office with double occupancy";

  Modelica.Blocks.Sources.CombiTimeTable office2(
    extrapolation=Modelica.Blocks.Types.Extrapolation.Periodic,
    tableOnFile=false,
    table=[0.0,0.0; 8*3600,0;
           8*3600,2; 9*3600,2;
           9*3600,3; 12*3600,3;
           12*3600, 2; 13*3600,2;
           13*3600,5; 15*3600,5;
           15*3600,3; 16*3600,3;
           16*3600,6; 18*3600,6;
    18*3600,0; 24*3600,0]) "Office with double occupancy";

  Modelica.Blocks.Sources.CombiTimeTable cla1(
    extrapolation=Modelica.Blocks.Types.Extrapolation.Periodic,
    tableOnFile=false,
    table=[0.0,0.0; 8*3600,0;
           8*3600,25; 9*3600,25;
           9*3600,20; 10*3600,20;
           10*3600,30; 12*3600,30;
           12*3600, 0; 13*3600,0;
           13*3600,30; 15*3600,30;
           15*3600,40; 16*3600,40;
           16*3600,20; 18*3600,20;
    18*3600,0; 24*3600,0]) "Class room";

  Modelica.Blocks.Sources.CombiTimeTable cla2(
    extrapolation=Modelica.Blocks.Types.Extrapolation.Periodic,
    tableOnFile=false,
    table=[0.0,0.0; 8*3600,0;
           8*3600,20; 9*3600,20;
           9*3600,10; 10*3600,10;
           10*3600,20; 11*3600,20;
           11*3600,15; 12*3600,15;
           12*3600, 0; 13*3600,0;
           13*3600,30; 15*3600,30;
           15*3600,20; 16*3600,20;
           16*3600,25; 18*3600,25;
    18*3600,0; 24*3600,0]) "Class room";

  Modelica.Blocks.Sources.CombiTimeTable smaRoo1(
    extrapolation=Modelica.Blocks.Types.Extrapolation.Periodic,
    tableOnFile=false,
    table=[0.0,0.0; 8*3600,0;
    8*3600,0.4; 9*3600,0.4;
    9*3600,1; 10*3600,1;
    10*3600,0.4; 12*3600,0.4;
    12*3600,1; 13*3600,1;
           13*3600,0.5; 14*3600,0.5;
           14*3600,1.0; 16*3600,1.0;
           16*3600,0.5; 18*3600,0.5;
    18*3600,0; 24*3600,0]) "Small rooms";

  Modelica.Blocks.Sources.CombiTimeTable smaRoo2(
    extrapolation=Modelica.Blocks.Types.Extrapolation.Periodic,
    tableOnFile=false,
    table=[0.0,0.0; 8*3600,0;
    8*3600,0.4; 9*3600,0.4;
    9*3600,1; 10*3600,1;
    10*3600,0.4; 12*3600,0.4;
    12*3600,1; 13*3600,1;
           13*3600,0.3; 14*3600,0.3;
           14*3600,0.4; 16*3600,0.4;
           16*3600,0.2; 18*3600,0.2;
    18*3600,0; 24*3600,0]) "Small rooms";

  Modelica.Blocks.Interfaces.RealOutput y1[2] 
    "Connector of Real output signals";
  Modelica.Blocks.Interfaces.RealOutput y2[2] 
    "Connector of Real output signals";
  Modelica.Blocks.Interfaces.RealOutput y3[2] 
    "Connector of Real output signals";
  Modelica.Blocks.Math.Gain sca1(k=2) "Scaling for occupancy";
  Modelica.Blocks.Math.Gain sca2(k=3) "Scaling for occupancy";
  Modelica.Blocks.Math.Gain sca3(k=3) "Scaling for occupancy";
  Modelica.Blocks.Math.Gain sca4(k=2) "Scaling for occupancy";
  Modelica.Blocks.Math.Gain sca5(k=3) "Scaling for occupancy";
  Modelica.Blocks.Math.Gain sca6(k=3) "Scaling for occupancy";
equation 
  connect(cla1.y[1], sca1.u);
  connect(cla2.y[1], sca4.u);
  connect(office1.y[1], sca2.u);
  connect(office2.y[1], sca5.u);
  connect(smaRoo1.y[1], sca3.u);
  connect(smaRoo2.y[1], sca6.u);
  connect(sca1.y, y1[1]);
  connect(sca4.y, y1[2]);
  connect(sca2.y, y2[1]);
  connect(sca5.y, y2[2]);
  connect(sca3.y, y3[1]);
  connect(sca6.y, y3[2]);
end Occupancy;

Buildings.Examples.VAVCO2.BaseClasses.RoomLeakage Buildings.Examples.VAVCO2.BaseClasses.RoomLeakage

Room leakage model

Buildings.Examples.VAVCO2.BaseClasses.RoomLeakage

Information




Room leakage used in the MIT system model.


Extends from Buildings.BaseClasses.BaseIcon (Base icon).

Connectors




TypeNameDescription


input RealInputpPressure


FluidPort_bport_b 




Modelica definition


model RoomLeakage "Room leakage model"
  extends Buildings.BaseClasses.BaseIcon;
  replaceable package Medium =
      Modelica.Media.Interfaces.PartialMedium "Medium in the component";

  Buildings.Fluid.FixedResistances.FixedResistanceDpM res(
    m_flow_nominal=1,
    redeclare package Medium = Medium,
    dp_nominal=1000) "Resistance model";

  Modelica.Blocks.Interfaces.RealInput p "Pressure";
  Modelica.Fluid.Interfaces.FluidPort_b port_b(redeclare package Medium =
        Medium);

  Buildings.Fluid.Sources.Boundary_pT amb(             redeclare package Medium
      =                                                                          Medium,
    nPorts=1,
    use_p_in=true,
    p=101325,
    T=293.15);
equation 
  connect(res.port_b, port_b);
  connect(p, amb.p_in);
  connect(amb.ports[1], res.port_a);
end RoomLeakage;







Buildings.Examples.VAVCO2.BaseClasses.RoomVAV
Buildings.Examples.VAVCO2.BaseClasses.RoomVAV

Model for CO2 emitted by people

Buildings.Examples.VAVCO2.BaseClasses.RoomVAV

Parameters




TypeNameDefaultDescription


replaceable package MediumModelica.Media.Interfaces.Pa...Medium in the component


replaceable model MotorModelBuildings.Fluid.Actuators.Mo... 


VolumeVRoo Volume of room [m3]


VolumeVPle Volume of plenum [m3]


AreaADam Damper face area [m2]


MassFlowRatem_flow_nominal Nominal mass flow rate [kg/s]




Connectors




TypeNameDescription


replaceable package MediumMedium in the component


replaceable model MotorModel 


FluidPort_aportRoo1Fluid port


FluidPort_aportSupFluid port


FluidPort_aportRetFluid port


FluidPort_aportRoo2Fluid port


output RealOutputyDamDamper control signal


input RealInputnPeoNumber of people




Modelica definition


model RoomVAV "Model for CO2 emitted by people"

  replaceable package Medium =
      Modelica.Media.Interfaces.PartialMedium "Medium in the component";
  replaceable model MotorModel = Buildings.Fluid.Actuators.Motors.IdealMotor(delta=0.02, tOpe=60);
  Fluid.Actuators.Dampers.VAVBoxExponential vav(
    redeclare package Medium = Medium,
    A=ADam,
    m_flow_nominal=m_flow_nominal,
    dp_nominal=1E2,
    from_dp=true);
  Buildings.Fluid.MixingVolumes.MixingVolume vol(
    redeclare package Medium = Medium,
    V=VRoo,
    nPorts=6,
    energyDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial,
    massDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial,
    substanceDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial,
    traceDynamics=Modelica.Fluid.Types.Dynamics.DynamicFreeInitial) 
    "Room volume";
  Buildings.Fluid.Sensors.TraceSubstances senCO2(       redeclare package
      Medium =
        Medium) "Sensor at volume";
  Buildings.Fluid.Sources.PrescribedExtraPropertyFlowRate sou(redeclare package
      Medium =         Medium, use_m_flow_in=true,
    nPorts=1) "CO2 source";
  parameter Modelica.SIunits.Volume VRoo "Volume of room";
  Buildings.Fluid.MixingVolumes.MixingVolume ple(
    redeclare package Medium = Medium,
    V=VPle,
    nPorts=2,
    energyDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial,
    massDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial,
    substanceDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial,
    traceDynamics=Modelica.Fluid.Types.Dynamics.DynamicFreeInitial) 
    "Plenum volume";
  parameter Modelica.SIunits.Volume VPle "Volume of plenum";
  Modelica.Fluid.Interfaces.FluidPort_a portRoo1(redeclare package Medium =
        Medium) "Fluid port";
  Modelica.Fluid.Interfaces.FluidPort_a portSup(redeclare package Medium =
        Medium) "Fluid port";
  Modelica.Fluid.Interfaces.FluidPort_a portRet(redeclare package Medium =
        Medium) "Fluid port";
  Modelica.Fluid.Interfaces.FluidPort_a portRoo2(redeclare package Medium =
        Medium) "Fluid port";
  Modelica.Blocks.Interfaces.RealOutput yDam "Damper control signal";
  parameter Modelica.SIunits.Area ADam "Damper face area";
  parameter Modelica.SIunits.MassFlowRate m_flow_nominal 
    "Nominal mass flow rate";
  Modelica.Blocks.Interfaces.RealInput nPeo "Number of people";
  Modelica.Blocks.Math.Gain gaiCO2(k=8.18E-6) "CO2 emission per person";
  Fluid.Sensors.Conversions.To_VolumeFraction volFraCO2(
                                                   MMMea=Modelica.Media.
        IdealGases.Common.SingleGasesData.CO2.MM) "CO2 volume fraction";
  DamperControl con "Damper controller";
  Modelica.Blocks.Math.Gain peoDen(k=2.5/VRoo) "People density per m2";
  //res(dp_nominal=5, m_flow_nominal=1.2/3600))
  Modelica.Blocks.Sources.RealExpression vavACH(y=vav.m_flow*3600/VRoo/1.2) 
    "VAV box air change per hour";
  Fluid.FixedResistances.FixedResistanceDpM dpPle(
    redeclare package Medium = Medium,
    m_flow_nominal=m_flow_nominal,
    dp_nominal=20,
    from_dp=true);
equation 
  connect(gaiCO2.y, sou.m_flow_in);
  connect(senCO2.C, volFraCO2.m);
  connect(volFraCO2.V, con.u);
  connect(con.y, yDam);
  connect(con.y, vav.y);
  connect(ple.ports[1], portRet);
  connect(nPeo, gaiCO2.u);
  connect(nPeo, peoDen.u);
  connect(portSup, vav.port_a);

  connect(portRoo1, vol.ports[1]);
  connect(vav.port_b, vol.ports[2]);
  connect(senCO2.port, vol.ports[3]);
  connect(portRoo2, vol.ports[4]);
  connect(sou.ports[1], vol.ports[5]);
  connect(dpPle.port_a, vol.ports[6]);
  connect(dpPle.port_b, ple.ports[2]);
end RoomVAV;







Buildings.Examples.VAVCO2.BaseClasses.Suite
Buildings.Examples.VAVCO2.BaseClasses.Suite

Model of a suite consisting of five rooms of the MIT system model

Buildings.Examples.VAVCO2.BaseClasses.Suite

Information





Model of a suite consisting of five rooms for the MIT system model.




Parameters




TypeNameDefaultDescription


replaceable package MediumModelica.Media.Interfaces.Pa...Medium in the component


RealscaM_flow Scaling factor for mass flow rate


MassFlowRatem0Tot_flowscaM_flow*(5.196 + 2.8428 + ...[kg/s]




Connectors




TypeNameDescription


replaceable package MediumMedium in the component


input RealInputpPressure


FluidPort_bport_aSup 


FluidPort_bport_bExh 


output RealOutputp_relRelative pressure signal


output RealOutputyDam[6]VAV damper positions


output RealOutputdPRooRoom pressurization




Modelica definition


model Suite 
  "Model of a suite consisting of five rooms of the MIT system model"

  replaceable package Medium =
      Modelica.Media.Interfaces.PartialMedium "Medium in the component";

  Modelica.Blocks.Interfaces.RealInput p "Pressure";
  Modelica.Fluid.Interfaces.FluidPort_b port_aSup(redeclare package Medium =
        Medium);
  parameter Real scaM_flow "Scaling factor for mass flow rate";

  parameter Modelica.SIunits.MassFlowRate m0Tot_flow=
scaM_flow*(5.196+2.8428+1.0044+0.9612+0.3624+0.1584);

  Buildings.Fluid.FixedResistances.SplitterFixedResistanceDpM spl34(
                                              m_flow_nominal=scaM_flow*ones(3), dp_nominal={0.176,0.844,
        0.0662},
    redeclare package Medium = Medium,
    dynamicBalance=false);
  Buildings.Fluid.FixedResistances.SplitterFixedResistanceDpM mix55(
                                              m_flow_nominal=scaM_flow*ones(3), dp_nominal=1E3*{
        0.263200E-02,0.999990E-03,0.649000E-03},
    redeclare package Medium = Medium,
    dynamicBalance=false);
  Buildings.Fluid.FixedResistances.FixedResistanceDpM res13(
                                      m_flow_nominal=scaM_flow*1, dp_nominal=0.1E3,
    redeclare package Medium = Medium);
  Buildings.Fluid.FixedResistances.FixedResistanceDpM res14(
                                      m_flow_nominal=scaM_flow*1, dp_nominal=0.1E3,
    redeclare package Medium = Medium);
  Buildings.Fluid.FixedResistances.FixedResistanceDpM res15(
                                      m_flow_nominal=scaM_flow*1, dp_nominal=0.1E3,
    redeclare package Medium = Medium);
  Buildings.Fluid.FixedResistances.FixedResistanceDpM res16(
                                      m_flow_nominal=scaM_flow*1, dp_nominal=0.1E3,
    redeclare package Medium = Medium);
  Buildings.Fluid.FixedResistances.FixedResistanceDpM res17(
                                      m_flow_nominal=scaM_flow*1, dp_nominal=0.1E3,
    redeclare package Medium = Medium);
  Buildings.Fluid.FixedResistances.SplitterFixedResistanceDpM spl35(           m_flow_nominal=scaM_flow*ones(3), dp_nominal=1E3*{
        0.371000E-04,0.259000E-02,0.131000E-02},
    redeclare package Medium = Medium,
    dynamicBalance=false);
  Buildings.Fluid.FixedResistances.SplitterFixedResistanceDpM spl36(           m_flow_nominal=scaM_flow*ones(3), dp_nominal=1E3*{
        0.211000E-03,0.128000E-01,0.223000E-02},
    redeclare package Medium = Medium,
    dynamicBalance=false);
  Buildings.Fluid.FixedResistances.SplitterFixedResistanceDpM spl37(           m_flow_nominal=scaM_flow*ones(3), dp_nominal=1E3*{
        0.730000E-03,0.128000E-01,0.938000E-02},
    redeclare package Medium = Medium,
    dynamicBalance=false);
  Buildings.Fluid.FixedResistances.SplitterFixedResistanceDpM spl38(           m_flow_nominal=scaM_flow*ones(3), dp_nominal=1E3*{
        0.731000E-02,0.895000E-01,0.942000E-01},
    redeclare package Medium = Medium,
    dynamicBalance=false);
  Buildings.Fluid.FixedResistances.SplitterFixedResistanceDpM mix54(           m_flow_nominal=scaM_flow*ones(3), dp_nominal=1E3*{
        0.653000E-02,0.271000E-03,0.402000E-04},
    redeclare package Medium = Medium,
    dynamicBalance=false);
  Buildings.Fluid.FixedResistances.SplitterFixedResistanceDpM mix53(           m_flow_nominal=scaM_flow*ones(3), dp_nominal=1E3*{
        0.566000E-01,0.541000E-02,0.749000E-04},
    redeclare package Medium = Medium,
    dynamicBalance=false);
  Buildings.Fluid.FixedResistances.SplitterFixedResistanceDpM mix52(           m_flow_nominal=scaM_flow*ones(3), dp_nominal=1E3*{
        0.353960,0.494000E-03,0.922000E-03},
    redeclare package Medium = Medium,
    dynamicBalance=false);
  Buildings.Fluid.FixedResistances.SplitterFixedResistanceDpM mix51(           m_flow_nominal=scaM_flow*ones(3), dp_nominal=1E3*{
        0.847600E-01,1.89750,0.150000E-02},
    redeclare package Medium = Medium,
    dynamicBalance=false);
  Modelica.Fluid.Interfaces.FluidPort_b port_bExh(redeclare package Medium =
        Medium);
  Buildings.Fluid.FixedResistances.FixedResistanceDpM res1(
                                      m_flow_nominal=scaM_flow*1, dp_nominal=0.1E3,
    redeclare package Medium = Medium);
  RoomVAV roo45(
    redeclare package Medium = Medium,
    ADam=scaM_flow*0.49,
    m_flow_nominal=scaM_flow*5.196,
    VRoo=1820,
    VPle=396) "Room model";
  RoomVAV roo46(
    redeclare package Medium = Medium,
    ADam=scaM_flow*0.245,
    m_flow_nominal=scaM_flow*2.8428,
    VRoo=1210,
    VPle=330) "Room model";
  RoomVAV roo47(
    redeclare package Medium = Medium,
    ADam=scaM_flow*0.128,
    m_flow_nominal=scaM_flow*1.0044,
    VRoo=647,
    VPle=125) "Room model";
  RoomVAV roo48(
    redeclare package Medium = Medium,
    ADam=scaM_flow*0.128,
    m_flow_nominal=scaM_flow*0.9612,
    VRoo=385,
    VPle=107) "Room model";
  RoomVAV roo49(
    redeclare package Medium = Medium,
    ADam=scaM_flow*0.0494,
    m_flow_nominal=scaM_flow*0.3624,
    VRoo=48,
    VPle=13) "Room model";
  RoomVAV roo50(
    redeclare package Medium = Medium,
    ADam=scaM_flow*0.024,
    m_flow_nominal=scaM_flow*0.1584,
    VRoo=155,
    VPle=43) "Room model";
  Occupancy occ "Occupancy";
  Buildings.Fluid.Sensors.RelativePressure dpMea(  redeclare package Medium =
        Medium) "Static pressure measurement";
  Modelica.Blocks.Interfaces.RealOutput p_rel "Relative pressure signal";
  Modelica.Blocks.Interfaces.RealOutput yDam[6] "VAV damper positions";
  Buildings.Fluid.Sensors.Pressure pRoo(redeclare package Medium = Medium) 
    "Room pressure";
  Modelica.Blocks.Math.Feedback feeBac;
  Modelica.Blocks.Interfaces.RealOutput dPRoo "Room pressurization";
equation 
  connect(spl38.port_2, roo50.portSup);
  connect(port_aSup, spl34.port_1);
  connect(spl34.port_2, spl35.port_1);
  connect(spl35.port_2, spl36.port_1);
  connect(spl36.port_2, spl37.port_1);
  connect(spl37.port_2, spl38.port_1);
  connect(dpMea.port_a, spl38.port_1);
  connect(pRoo.p, feeBac.u2);
  connect(roo50.portRoo2, pRoo.port);
  connect(spl34.port_3, roo45.portSup);
  connect(spl35.port_3, roo46.portSup);
  connect(spl36.port_3, roo47.portSup);
  connect(spl37.port_3, roo48.portSup);
  connect(spl38.port_3, roo49.portSup);
  connect(dpMea.port_b, res16.port_b);
  connect(p, feeBac.u1);
  connect(dPRoo, feeBac.y);
  connect(dpMea.p_rel, p_rel);
  connect(roo45.yDam, yDam[1]);
  connect(roo46.yDam, yDam[2]);
  connect(roo47.yDam, yDam[3]);
  connect(roo48.yDam, yDam[4]);
  connect(roo49.yDam, yDam[5]);
  connect(roo50.yDam, yDam[6]);
  connect(occ.y1[1], roo45.nPeo);
  connect(occ.y1[2], roo46.nPeo);
  connect(occ.y2[1], roo47.nPeo);
  connect(occ.y2[2], roo48.nPeo);
  connect(occ.y3[1], roo49.nPeo);
  connect(occ.y3[2], roo50.nPeo);
  connect(port_bExh, mix55.port_1);
  connect(mix55.port_2, mix54.port_1);
  connect(mix54.port_2, mix53.port_1);
  connect(mix53.port_2, mix52.port_1);
  connect(mix52.port_2, mix51.port_1);
  connect(mix51.port_2, roo50.portRet);
  connect(roo48.portRet, mix51.port_3);
  connect(mix52.port_3, roo49.portRet);
  connect(roo47.portRet, mix53.port_3);
  connect(roo46.portRet, mix54.port_3);
  connect(roo45.portRet, mix55.port_3);
  connect(res1.port_b, roo45.portRoo1);
  connect(roo45.portRoo2, res13.port_a);
  connect(res13.port_b, roo46.portRoo1);
  connect(roo46.portRoo2, res14.port_a);
  connect(res14.port_b, roo47.portRoo1);
  connect(roo47.portRoo2, res15.port_a);
  connect(res15.port_b, roo48.portRoo1);
  connect(roo48.portRoo2, res16.port_a);
  connect(res16.port_b, roo49.portRoo1);
  connect(roo49.portRoo2, res17.port_a);
  connect(res17.port_b, roo50.portRoo1);
  connect(roo50.portRoo2, res1.port_a);
end Suite;





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