Function addSystemType4

src/model/HVACTemplates.cpp:305–370

  }

  Loop addSystemType4(Model& model) {
    Model tempModel;

    Schedule _alwaysOnSchedule = model.alwaysOnDiscreteSchedule();

    AirLoopHVAC airLoopHVAC(model);
    airLoopHVAC.setName("Packaged Rooftop Heat Pump");
    // when an airloophvac is contructed, its constructor automatically creates a sizing:system object
    // the default sizing:system contstructor makes a system:sizing object appropriate for a multizone VAV system
    // this systems is a constant volume system with no VAV terminals, and needs different default settings

    // get the sizing:system object associated with the airloophvac
    SizingSystem sizingSystem = airLoopHVAC.sizingSystem();

    //set the default parameters correctly for a constant volume system with no VAV terminals
    sizingSystem.setTypeofLoadtoSizeOn("Sensible");
    sizingSystem.autosizeDesignOutdoorAirFlowRate();
    sizingSystem.setCentralHeatingMaximumSystemAirFlowRatio(1.0);
    sizingSystem.setPreheatDesignTemperature(7.0);
    sizingSystem.setPreheatDesignHumidityRatio(0.008);
    sizingSystem.setPrecoolDesignTemperature(12.8);
    sizingSystem.setPrecoolDesignHumidityRatio(0.008);
    sizingSystem.setCentralCoolingDesignSupplyAirTemperature(12.8);
    sizingSystem.setCentralHeatingDesignSupplyAirTemperature(40.0);
    sizingSystem.setSizingOption("NonCoincident");
    sizingSystem.setAllOutdoorAirinCooling(false);
    sizingSystem.setAllOutdoorAirinHeating(false);
    sizingSystem.setCentralCoolingDesignSupplyAirHumidityRatio(0.0085);
    sizingSystem.setCentralHeatingDesignSupplyAirHumidityRatio(0.0080);
    sizingSystem.setCoolingDesignAirFlowMethod("DesignDay");
    sizingSystem.setCoolingDesignAirFlowRate(0.0);
    sizingSystem.setHeatingDesignAirFlowMethod("DesignDay");
    sizingSystem.setHeatingDesignAirFlowRate(0.0);
    sizingSystem.setSystemOutdoorAirMethod("ZoneSum");

    FanConstantVolume supplyFan(model, _alwaysOnSchedule);
    supplyFan.setPressureRise(500);

    CoilCoolingDXSingleSpeed coolingCoil = CoilCoolingDXSingleSpeed(model);

    CoilHeatingDXSingleSpeed heatingCoil(model);

    CoilHeatingElectric coilHeatingElectric = CoilHeatingElectric(model);

    ControllerOutdoorAir controllerOutdoorAir = ControllerOutdoorAir(model);

    AirLoopHVACOutdoorAirSystem outdoorAirSystem = AirLoopHVACOutdoorAirSystem(model, controllerOutdoorAir);

    Node supplyOutletNode = airLoopHVAC.supplyOutletNode();
    outdoorAirSystem.addToNode(supplyOutletNode);
    coolingCoil.addToNode(supplyOutletNode);
    heatingCoil.addToNode(supplyOutletNode);
    coilHeatingElectric.addToNode(supplyOutletNode);
    supplyFan.addToNode(supplyOutletNode);

    AirTerminalSingleDuctConstantVolumeNoReheat terminal(model, _alwaysOnSchedule);

    airLoopHVAC.addBranchForHVACComponent(terminal);