Module: BTAP::Resources::HVAC::HVACTemplates::NECB2011

Defined in:
lib/openstudio-standards/btap/hvac.rb

Class Method Summary collapse

Class Method Details

.add_sys1_unitary_ac_baseboard_heating(model, zones, boiler_fueltype, mau, mau_heating_coil_type, baseboard_type) ⇒ Object 



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# File 'lib/openstudio-standards/btap/hvac.rb', line 2337

def self.add_sys1_unitary_ac_baseboard_heating(model,zones, boiler_fueltype, mau ,mau_heating_coil_type,baseboard_type)

  # System Type 1: PTAC with no heating (unitary AC) 

  # Zone baseboards, electric or hot water depending on argument baseboard_type

  # baseboard_type choices are "Hot Water" or "Electric" 

  # PSZ to represent make-up air unit (if present)

  # This measure creates:

  # a PTAC  unit for each zone in the building; DX cooling coil

  # and heating coil that is always off

  # Baseboards ("Hot Water or "Electric") in zones connected to hot water loop

  # MAU is present if argument mau == true, not present if argument mau == false

  # MAU is PSZ; DX cooling 

  # MAU heating coil: hot water coil or electric, depending on argument mau_heating_coil_type

  # mau_heating_coil_type choices are "Hot Water", "Electric"

  # boiler_fueltype choices match OS choices for Boiler component fuel type, i.e.

  # "NaturalGas","Electricity","PropaneGas","FuelOil#1","FuelOil#2","Coal","Diesel","Gasoline","OtherFuel1"

  
  # Some system parameters are set after system is set up; by applying method 'applyHVACEfficiencyStandard'



  always_on = model.alwaysOnDiscreteSchedule
  
  # define always off schedule for ptac heating coil

  always_off = BTAP::Resources::Schedules::StandardSchedules::ON_OFF::always_off(model)

  # Create a hot water loop; MAU hydronic heating coil and hot water baseboards will be

  # connected to this loop (if MAU and its heating coil is hydronic or if baseboard type is hydronic)


  if ( (mau == true and mau_heating_coil_type == "Hot Water") or baseboard_type == "Hot Water" ) then

    hw_loop = OpenStudio::Model::PlantLoop.new(model)
    BTAP::Resources::HVAC::HVACTemplates::NECB2011::setup_hw_loop_with_components(model,hw_loop,boiler_fueltype, always_on)

  end  #of if statement

  
  #Create MAU 

  # TO DO: MAU sizing, characteristics (fan operation schedules, temperature setpoints, outdoor air, etc)

 
  if ( mau == true) then
    
    mau_air_loop = OpenStudio::Model::AirLoopHVAC.new(model)


    mau_air_loop.setName("Make-up air unit")

    # When an air_loop is constructed, its constructor creates a sizing:system object

    # the default sizing:system constructor makes a system:sizing object

    # appropriate for a multizone VAV system

    # this systems is a constant volume system with no VAV terminals,

    # and therfore needs different default settings

    air_loop_sizing = mau_air_loop.sizingSystem # TODO units

    air_loop_sizing.setTypeofLoadtoSizeOn("Sensible")
    air_loop_sizing.autosizeDesignOutdoorAirFlowRate
    air_loop_sizing.setMinimumSystemAirFlowRatio(1.0)
    air_loop_sizing.setPreheatDesignTemperature(7.0)
    air_loop_sizing.setPreheatDesignHumidityRatio(0.008)
    air_loop_sizing.setPrecoolDesignTemperature(12.8)
    air_loop_sizing.setPrecoolDesignHumidityRatio(0.008)
    air_loop_sizing.setCentralCoolingDesignSupplyAirTemperature(12.8)
    air_loop_sizing.setCentralHeatingDesignSupplyAirTemperature(40.0)
    air_loop_sizing.setSizingOption("NonCoincident")
    air_loop_sizing.setAllOutdoorAirinCooling(false)
    air_loop_sizing.setAllOutdoorAirinHeating(false)
    air_loop_sizing.setCentralCoolingDesignSupplyAirHumidityRatio(0.0085)
    air_loop_sizing.setCentralHeatingDesignSupplyAirHumidityRatio(0.0080)
    air_loop_sizing.setCoolingDesignAirFlowMethod("DesignDay")
    air_loop_sizing.setCoolingDesignAirFlowRate(0.0)
    air_loop_sizing.setHeatingDesignAirFlowMethod("DesignDay")
    air_loop_sizing.setHeatingDesignAirFlowRate(0.0)
    air_loop_sizing.setSystemOutdoorAirMethod("ZoneSum")

    mau_fan = OpenStudio::Model::FanConstantVolume.new(model, always_on)
                  

    if ( mau_heating_coil_type == "Electric") then           # electric coil

      mau_htg_coil = OpenStudio::Model::CoilHeatingElectric.new(model,always_on)
    end

    if ( mau_heating_coil_type == "Hot Water") then
      mau_htg_coil = OpenStudio::Model::CoilHeatingWater.new(model, always_on)
      hw_loop.addDemandBranchForComponent(mau_htg_coil)
    end


    # Set up DX coil with default curves (set to NECB);


    mau_clg_coil = BTAP::Resources::HVAC::Plant::add_onespeed_DX_coil(model,always_on)

    #oa_controller 

    oa_controller = OpenStudio::Model::ControllerOutdoorAir.new(model)
    #oa_controller.setEconomizerControlType("DifferentialEnthalpy")



    #oa_system 

    oa_system = OpenStudio::Model::AirLoopHVACOutdoorAirSystem.new(model, oa_controller)

    # Add the components to the air loop

    # in order from closest to zone to furthest from zone

    supply_inlet_node = mau_air_loop.supplyInletNode
    mau_fan.addToNode(supply_inlet_node)
    mau_htg_coil.addToNode(supply_inlet_node)
    mau_clg_coil.addToNode(supply_inlet_node)
    oa_system.addToNode(supply_inlet_node)

    # Add a setpoint manager single zone reheat to control the

    # supply air temperature 

    setpoint_mgr_single_zone_reheat = OpenStudio::Model::SetpointManagerSingleZoneReheat.new(model)
    setpoint_mgr_single_zone_reheat.setMinimumSupplyAirTemperature(13.0)
    setpoint_mgr_single_zone_reheat.addToNode(mau_air_loop.supplyOutletNode)
    
    # TO DO: Which zone is the control zone? 

    #setpoint_mgr_single_zone_reheat.setControlZone(zone)             


   
  end # Create MAU

  

  # Create a PTAC for each zone:

  # PTAC DX Cooling with electric heating coil; electric heating coil is always off 

  
  
  # TO DO: need to apply this system to space types:

  #(1) data processing area: control room, data centre

  # when cooling capacity <= 20kW and

  #(2) residential/accommodation: murb, hotel/motel guest room

  # when building/space heated only (this as per NECB; apply to

  # all for initial work? CAN-QUEST limitation)


  #TO DO: PTAC characteristics: sizing, fan schedules, temperature setpoints, interaction with MAU

  
  
  zones.each do |zone|
  
    # Set up PTAC heating coil; apply always off schedule            

 
    # htg_coil_elec = OpenStudio::Model::CoilHeatingElectric.new(model,always_on)

    htg_coil = OpenStudio::Model::CoilHeatingElectric.new(model,always_off)
  
    
    
    # Set up PTAC DX coil with NECB performance curve characteristics;

    clg_coil = BTAP::Resources::HVAC::Plant::add_onespeed_DX_coil(model,always_on)
    
    
    # Set up PTAC constant volume supply fan

    fan = OpenStudio::Model::FanConstantVolume.new(model, always_on)         
    fan.setPressureRise(640)
              
    

    ptac = OpenStudio::Model::ZoneHVACPackagedTerminalAirConditioner.new(model,
      always_on,
      fan,
      htg_coil,
      clg_coil)
    ptac.setName("#{zone.name} PTAC")
    ptac.addToThermalZone(zone)
    
    # add zone baseboards

    if ( baseboard_type == "Electric") then

      #  zone_elec_baseboard = OpenStudio::Model::ZoneHVACBaseboardConvectiveElectric.new(model)

      zone_elec_baseboard = BTAP::Resources::HVAC::Plant::add_elec_baseboard(model)
      zone_elec_baseboard.addToThermalZone(zone)

    end

    if ( baseboard_type == "Hot Water") then
      baseboard_coil = BTAP::Resources::HVAC::Plant::add_hw_baseboard_coil(model)
      #Connect baseboard coil to hot water loop

      hw_loop.addDemandBranchForComponent(baseboard_coil)


      zone_baseboard = BTAP::Resources::HVAC::ZoneEquipment::add_zone_baseboard_convective_water(model, always_on, baseboard_coil)
      #add zone_baseboard to zone

      zone_baseboard.addToThermalZone(zone)
      
    end
    
    
    #  # Create a diffuser and attach the zone/diffuser pair to the MAU air loop, if applicable

    if (mau == true) then

      diffuser = OpenStudio::Model::AirTerminalSingleDuctUncontrolled.new(model, always_on)
      mau_air_loop.addBranchForZone(zone,diffuser.to_StraightComponent)
       
    end #components for MAU

                
  end # of zone loop

  

  return true
  
end

.add_sys2_FPFC_sys5_TPFC(model, zones, boiler_fueltype, chiller_type, fan_coil_type, mua_cooling_type) ⇒ Object

sys1_unitary_ac_baseboard_heating



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# File 'lib/openstudio-standards/btap/hvac.rb', line 2532

def self.add_sys2_FPFC_sys5_TPFC( model,zones, boiler_fueltype,chiller_type,fan_coil_type,mua_cooling_type )

  # System Type 2: FPFC or System 5: TPFC

  # This measure creates:

  # -a four pipe or a two pipe fan coil unit for each zone in the building;

  # -a make up air-unit to provide ventilation to each zone;

  # -a heating loop, cooling loop and condenser loop to serve four pipe fan coil units

  # Arguments:

  #   boiler_fueltype: "NaturalGas","Electricity","PropaneGas","FuelOil#1","FuelOil#2","Coal","Diesel","Gasoline","OtherFuel1"

  #   chiller_type: "Scroll";"Centrifugal";"Rotary Screw";"Reciprocating"

  #   mua_cooling_type: make-up air unit cooling type "DX";"Hydronic"

  #   fan_coil_type options are "TPFC" or "FPFC"


  # TODO: Add arguments as needed when the sizing routine is finalized. For example we will need to know the 

  # required size of the boilers to decide on how many units are needed based on NECB rules.


  always_on = model.alwaysOnDiscreteSchedule

  # schedule for two-pipe fan coil operation


  twenty_four_hrs = OpenStudio::Time.new(0,24,0,0)
  
  # Heating coil availability schedule for tpfc

  tpfc_htg_availability_sch = OpenStudio::Model::ScheduleRuleset.new(model)
  tpfc_htg_availability_sch.setName("tpfc_htg_availability")
  # Cooling coil availability schedule for tpfc

  tpfc_clg_availability_sch = OpenStudio::Model::ScheduleRuleset.new(model)
  tpfc_clg_availability_sch.setName("tpfc_clg_availability")
  istart_month = [1,7,11]
  istart_day = [1,1,1]
  iend_month = [6,10,12]
  iend_day = [30,31,31]
  sch_htg_value = [1,0,1]
  sch_clg_value = [0,1,0]
  for i in 0..2 
    tpfc_htg_availability_sch_rule = OpenStudio::Model::ScheduleRule.new(tpfc_htg_availability_sch)
    tpfc_htg_availability_sch_rule.setName("tpfc_htg_availability_sch_rule")
    tpfc_htg_availability_sch_rule.setStartDate(model.getYearDescription.makeDate(istart_month[i],istart_day[i]))
    tpfc_htg_availability_sch_rule.setEndDate(model.getYearDescription.makeDate(iend_month[i],iend_day[i]))
    tpfc_htg_availability_sch_rule.setApplySunday(true)
    tpfc_htg_availability_sch_rule.setApplyMonday(true)
    tpfc_htg_availability_sch_rule.setApplyTuesday(true)
    tpfc_htg_availability_sch_rule.setApplyWednesday(true)
    tpfc_htg_availability_sch_rule.setApplyThursday(true)
    tpfc_htg_availability_sch_rule.setApplyFriday(true)
    tpfc_htg_availability_sch_rule.setApplySaturday(true)           
    day_schedule = tpfc_htg_availability_sch_rule.daySchedule
    day_schedule.setName("tpfc_htg_availability_sch_rule_day")
    day_schedule.addValue(twenty_four_hrs,sch_htg_value[i])
    
    tpfc_clg_availability_sch_rule = OpenStudio::Model::ScheduleRule.new(tpfc_clg_availability_sch)
    tpfc_clg_availability_sch_rule.setName("tpfc_clg_availability_sch_rule")
    tpfc_clg_availability_sch_rule.setStartDate(model.getYearDescription.makeDate(istart_month[i],istart_day[i]))
    tpfc_clg_availability_sch_rule.setEndDate(model.getYearDescription.makeDate(iend_month[i],iend_day[i]))
    tpfc_clg_availability_sch_rule.setApplySunday(true)
    tpfc_clg_availability_sch_rule.setApplyMonday(true)
    tpfc_clg_availability_sch_rule.setApplyTuesday(true)
    tpfc_clg_availability_sch_rule.setApplyWednesday(true)
    tpfc_clg_availability_sch_rule.setApplyThursday(true)
    tpfc_clg_availability_sch_rule.setApplyFriday(true)
    tpfc_clg_availability_sch_rule.setApplySaturday(true)           
    day_schedule = tpfc_clg_availability_sch_rule.daySchedule
    day_schedule.setName("tpfc_clg_availability_sch_rule_day")
    day_schedule.addValue(twenty_four_hrs,sch_clg_value[i])

  end

  # Create a hot water loop


  hw_loop = OpenStudio::Model::PlantLoop.new(model)
  BTAP::Resources::HVAC::HVACTemplates::NECB2011::setup_hw_loop_with_components(model,hw_loop,boiler_fueltype,tpfc_htg_availability_sch)

  # Create a chilled water loop


  chw_loop = OpenStudio::Model::PlantLoop.new(model)
  chiller = BTAP::Resources::HVAC::HVACTemplates::NECB2011::setup_chw_loop_with_components(model,chw_loop,chiller_type)

  # Create a condenser Loop


  cw_loop = OpenStudio::Model::PlantLoop.new(model)
  ctower = BTAP::Resources::HVAC::HVACTemplates::NECB2011::setup_cw_loop_with_components(model,cw_loop,chiller)

  # Set up make-up air unit for ventilation

  # TO DO: Need to investigate characteristics of make-up air unit for NECB reference

  # and define them here


  air_loop = OpenStudio::Model::AirLoopHVAC.new(model)

  air_loop.setName("Make-up air unit")

  # When an air_loop is contructed, its constructor creates a sizing:system object

  # the default sizing:system constructor makes a system:sizing object

  # appropriate for a multizone VAV system

  # this systems is a constant volume system with no VAV terminals,

  # and therfore needs different default settings

  air_loop_sizing = air_loop.sizingSystem # TODO units

  air_loop_sizing.setTypeofLoadtoSizeOn("Sensible")
  air_loop_sizing.autosizeDesignOutdoorAirFlowRate
  air_loop_sizing.setMinimumSystemAirFlowRatio(1.0)
  air_loop_sizing.setPreheatDesignTemperature(7.0)
  air_loop_sizing.setPreheatDesignHumidityRatio(0.008)
  air_loop_sizing.setPrecoolDesignTemperature(12.8)
  air_loop_sizing.setPrecoolDesignHumidityRatio(0.008)
  air_loop_sizing.setCentralCoolingDesignSupplyAirTemperature(13.0)
  air_loop_sizing.setCentralHeatingDesignSupplyAirTemperature(12.8)
  air_loop_sizing.setSizingOption("NonCoincident")
  air_loop_sizing.setAllOutdoorAirinCooling(false)
  air_loop_sizing.setAllOutdoorAirinHeating(false)
  air_loop_sizing.setCentralCoolingDesignSupplyAirHumidityRatio(0.008)
  air_loop_sizing.setCentralHeatingDesignSupplyAirHumidityRatio(0.008)
  air_loop_sizing.setCoolingDesignAirFlowMethod("DesignDay")
  air_loop_sizing.setCoolingDesignAirFlowRate(0.0)
  air_loop_sizing.setHeatingDesignAirFlowMethod("DesignDay")
  air_loop_sizing.setHeatingDesignAirFlowRate(0.0)
  air_loop_sizing.setSystemOutdoorAirMethod("ZoneSum")

  fan = OpenStudio::Model::FanConstantVolume.new(model, always_on)

  # Assume direct-fired gas heating coil for now; need to add logic

  # to set up hydronic or electric coil depending on proposed?


  htg_coil = OpenStudio::Model::CoilHeatingGas.new(model, always_on)

  # Add DX or hydronic cooling coil

  # TODO: set proper cooling DX COP when sizing data is available

  if(mua_cooling_type == "DX")
    clg_coil = BTAP::Resources::HVAC::Plant::add_onespeed_DX_coil(model,tpfc_clg_availability_sch)
  elsif(mua_cooling_type == "Hydronic")
    clg_coil = OpenStudio::Model::CoilCoolingWater.new(model, tpfc_clg_availability_sch)
    chw_loop.addDemandBranchForComponent(clg_coil)
  end

  # does MAU have an economizer?

  oa_controller = OpenStudio::Model::ControllerOutdoorAir.new(model)

  #oa_system = OpenStudio::Model::AirLoopHVACOutdoorAirSystem.new(model,oa_controller)

  oa_system = OpenStudio::Model::AirLoopHVACOutdoorAirSystem.new(model, oa_controller)

  # Add the components to the air loop 

  # in order from closest to zone to furthest from zone

  supply_inlet_node = air_loop.supplyInletNode
  fan.addToNode(supply_inlet_node)
  htg_coil.addToNode(supply_inlet_node)
  clg_coil.addToNode(supply_inlet_node)
  oa_system.addToNode(supply_inlet_node)

  # Add a setpoint manager single zone reheat to control the

  # supply air temperature based on the needs of default zone (OpenStudio picks one)

  # TO DO: need to have method to pick appropriate control zone?


  setpoint_mgr_single_zone_reheat = OpenStudio::Model::SetpointManagerSingleZoneReheat.new(model)
  setpoint_mgr_single_zone_reheat.setMinimumSupplyAirTemperature(12.8)
  setpoint_mgr_single_zone_reheat.setMaximumSupplyAirTemperature(13.0)
  setpoint_mgr_single_zone_reheat.addToNode(air_loop.supplyOutletNode)
 
  # Set up FC (ZoneHVAC,cooling coil, heating coil, fan) in each zone


  zones.each do |zone| 

    # fc supply fan

    fc_fan = OpenStudio::Model::FanConstantVolume.new(model, always_on)

    if(fan_coil_type == "FPFC")
      # heating coil

      fc_htg_coil = OpenStudio::Model::CoilHeatingWater.new(model, always_on)

      # cooling coil

      fc_clg_coil = OpenStudio::Model::CoilCoolingWater.new(model, always_on)
    elsif(fan_coil_type == "TPFC")
      # heating coil

      fc_htg_coil = OpenStudio::Model::CoilHeatingWater.new(model, tpfc_htg_availability_sch)

      # cooling coil

      fc_clg_coil = OpenStudio::Model::CoilCoolingWater.new(model, tpfc_clg_availability_sch)
    end

    # connect heating coil to hot water loop

    hw_loop.addDemandBranchForComponent(fc_htg_coil)
    # connect cooling coil to chilled water loop

    chw_loop.addDemandBranchForComponent(fc_clg_coil)

    zone_fc = OpenStudio::Model::ZoneHVACFourPipeFanCoil.new(model, always_on, fc_fan, fc_clg_coil, fc_htg_coil)
    zone_fc.addToThermalZone(zone)

    # Create a diffuser and attach the zone/diffuser pair to the air loop (make-up air unit)

    diffuser = OpenStudio::Model::AirTerminalSingleDuctUncontrolled.new(model, always_on)
    air_loop.addBranchForZone(zone,diffuser.to_StraightComponent)

  end #zone loop


end

.add_sys3and8_single_zone_packaged_rooftop_unit_with_baseboard_heating(model, zones, boiler_fueltype, heating_coil_type, baseboard_type) ⇒ Object

add_sys2_FPFC_sys5_TPFC



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# File 'lib/openstudio-standards/btap/hvac.rb', line 2724

def self.add_sys3and8_single_zone_packaged_rooftop_unit_with_baseboard_heating( model, zones, boiler_fueltype,  heating_coil_type, baseboard_type)
  # System Type 3: PSZ-AC

  # This measure creates:

  # -a constant volume packaged single-zone A/C unit

  # for each zone in the building; DX cooling with

  # heating coil: fuel-fired or electric, depending on argument heating_coil_type

  # heating_coil_type choices are "Electric", "Gas", "DX"

  # zone baseboards: hot water or electric, depending on argument baseboard_type

  # baseboard_type choices are "Hot Water" or "Electric"

  # boiler_fueltype choices match OS choices for Boiler component fuel type, i.e.

  # "NaturalGas","Electricity","PropaneGas","FuelOil#1","FuelOil#2","Coal","Diesel","Gasoline","OtherFuel1"


  always_on = model.alwaysOnDiscreteSchedule

  # Create a hot water loop (if baseboard type is hydronic); hot water baseboards will be connected to this loop


  if ( baseboard_type == "Hot Water" ) then

    hw_loop = OpenStudio::Model::PlantLoop.new(model)
    BTAP::Resources::HVAC::HVACTemplates::NECB2011::setup_hw_loop_with_components(model,hw_loop,boiler_fueltype, always_on)

  end  #of if statement


  zones.each do |zone|

    air_loop = OpenStudio::Model::AirLoopHVAC.new(model)

    air_loop.setName("#{zone.name} NECB System 3 PSZ")

    # When an air_loop is constructed, its constructor creates a sizing:system object

    # the default sizing:system constructor makes a system:sizing object

    # appropriate for a multizone VAV system

    # this systems is a constant volume system with no VAV terminals,

    # and therfore needs different default settings

    air_loop_sizing = air_loop.sizingSystem # TODO units

    air_loop_sizing.setTypeofLoadtoSizeOn("Sensible")
    air_loop_sizing.autosizeDesignOutdoorAirFlowRate
    air_loop_sizing.setMinimumSystemAirFlowRatio(1.0)
    air_loop_sizing.setPreheatDesignTemperature(7.0)
    air_loop_sizing.setPreheatDesignHumidityRatio(0.008)
    air_loop_sizing.setPrecoolDesignTemperature(12.8)
    air_loop_sizing.setPrecoolDesignHumidityRatio(0.008)
    air_loop_sizing.setCentralCoolingDesignSupplyAirTemperature(12.8)
    air_loop_sizing.setCentralHeatingDesignSupplyAirTemperature(40.0)
    air_loop_sizing.setSizingOption("NonCoincident")
    air_loop_sizing.setAllOutdoorAirinCooling(false)
    air_loop_sizing.setAllOutdoorAirinHeating(false)
    air_loop_sizing.setCentralCoolingDesignSupplyAirHumidityRatio(0.0085)
    air_loop_sizing.setCentralHeatingDesignSupplyAirHumidityRatio(0.0080)
    air_loop_sizing.setCoolingDesignAirFlowMethod("DesignDay")
    air_loop_sizing.setCoolingDesignAirFlowRate(0.0)
    air_loop_sizing.setHeatingDesignAirFlowMethod("DesignDay")
    air_loop_sizing.setHeatingDesignAirFlowRate(0.0)
    air_loop_sizing.setSystemOutdoorAirMethod("ZoneSum")

    fan = OpenStudio::Model::FanConstantVolume.new(model, always_on)
                 
    case heating_coil_type
    when "Electric"           # electric coil

      htg_coil = OpenStudio::Model::CoilHeatingElectric.new(model,always_on)

    when "Gas"
      htg_coil = OpenStudio::Model::CoilHeatingGas.new(model, always_on)

    when "DX"
      htg_coil = OpenStudio::Model::CoilHeatingDXSingleSpeed.new(model)  
      supplemental_htg_coil = OpenStudio::Model::CoilHeatingElectric.new(model,always_on)
    else
      raise("#{heating_coil_type} is not a valid heating coil type.)")
    end

    #TO DO: other fuel-fired heating coil types? (not available in OpenStudio/E+ - may need to play with efficiency to mimic other fuel types)


    # Set up DX coil with NECB performance curve characteristics;

    clg_coil = OpenStudio::Model::CoilCoolingDXSingleSpeed.new(model)

    #oa_controller 

    oa_controller = OpenStudio::Model::ControllerOutdoorAir.new(model)

    #oa_system 

    oa_system = OpenStudio::Model::AirLoopHVACOutdoorAirSystem.new(model, oa_controller)

    # Add the components to the air loop

    # in order from closest to zone to furthest from zone

    supply_inlet_node = air_loop.supplyInletNode
    #              fan.addToNode(supply_inlet_node)

    #              supplemental_htg_coil.addToNode(supply_inlet_node) if heating_coil_type == "DX" 

    #              htg_coil.addToNode(supply_inlet_node)

    #              clg_coil.addToNode(supply_inlet_node)

    #              oa_system.addToNode(supply_inlet_node)

    if(heating_coil_type == 'DX')
      air_to_air_heatpump = OpenStudio::Model::AirLoopHVACUnitaryHeatPumpAirToAir.new(model,always_on,fan,htg_coil,clg_coil,supplemental_htg_coil)
      air_to_air_heatpump.setName("#{zone.name} ASHP")
      air_to_air_heatpump.setControllingZone(zone)
      air_to_air_heatpump.setSupplyAirFanOperatingModeSchedule(always_on)
      air_to_air_heatpump.addToNode(supply_inlet_node)
    else
      fan.addToNode(supply_inlet_node)
      supplemental_htg_coil.addToNode(supply_inlet_node) if heating_coil_type == "DX" 
      htg_coil.addToNode(supply_inlet_node)
      clg_coil.addToNode(supply_inlet_node)
    end
    oa_system.addToNode(supply_inlet_node)

    # Add a setpoint manager single zone reheat to control the

    # supply air temperature based on the needs of this zone

    setpoint_mgr_single_zone_reheat = OpenStudio::Model::SetpointManagerSingleZoneReheat.new(model)
    setpoint_mgr_single_zone_reheat.setControlZone(zone)
    setpoint_mgr_single_zone_reheat.setMinimumSupplyAirTemperature(13.0)
    setpoint_mgr_single_zone_reheat.addToNode(air_loop.supplyOutletNode)

    # Create a diffuser and attach the zone/diffuser pair to the air loop

    #diffuser = OpenStudio::Model::AirTerminalSingleDuctUncontrolled.new(model,always_on)

    diffuser = OpenStudio::Model::AirTerminalSingleDuctUncontrolled.new(model, always_on)
    air_loop.addBranchForZone(zone,diffuser.to_StraightComponent)

    if ( baseboard_type == "Electric") then

      #  zone_elec_baseboard = OpenStudio::Model::ZoneHVACBaseboardConvectiveElectric.new(model)

      zone_elec_baseboard = BTAP::Resources::HVAC::Plant::add_elec_baseboard(model)
      zone_elec_baseboard.addToThermalZone(zone)

    end

    if ( baseboard_type == "Hot Water") then
      baseboard_coil = BTAP::Resources::HVAC::Plant::add_hw_baseboard_coil(model)
      #Connect baseboard coil to hot water loop

      hw_loop.addDemandBranchForComponent(baseboard_coil)

      zone_baseboard = BTAP::Resources::HVAC::ZoneEquipment::add_zone_baseboard_convective_water(model, always_on, baseboard_coil)
      #add zone_baseboard to zone

      zone_baseboard.addToThermalZone(zone)
    end
  
  end  #zone loop


  return true
end

.add_sys4_single_zone_make_up_air_unit_with_baseboard_heating(model, zones, boiler_fueltype, heating_coil_type, baseboard_type) ⇒ Object

end add_sys3_single_zone_packaged_rooftop_unit_with_baseboard_heating



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# File 'lib/openstudio-standards/btap/hvac.rb', line 2863

def self.add_sys4_single_zone_make_up_air_unit_with_baseboard_heating( model, zones, boiler_fueltype, heating_coil_type, baseboard_type)
  # System Type 4: PSZ-AC

  # This measure creates:

  # -a constant volume packaged single-zone A/C unit

  # for each zone in the building; DX cooling with

  # heating coil: fuel-fired or electric, depending on argument heating_coil_type

  # heating_coil_type choices are "Electric", "Gas"

  # zone baseboards: hot water or electric, depending on argument baseboard_type

  # baseboard_type choices are "Hot Water" or "Electric"

  # boiler_fueltype choices match OS choices for Boiler component fuel type, i.e.

  # "NaturalGas","Electricity","PropaneGas","FuelOil#1","FuelOil#2","Coal","Diesel","Gasoline","OtherFuel1"

  # NOTE: This is the same as system type 3 (single zone make-up air unit and single zone rooftop unit are both PSZ systems)

  # SHOULD WE COMBINE sys3 and sys4 into one script?



  always_on = model.alwaysOnDiscreteSchedule

  # Create a hot water loop; hot water baseboards will be connected to this loop


  #TO DO: Include logic to determine whether baseboards should be hydronic or electric


  #Create hot water loop if baseboard type is hydronic


  if ( baseboard_type == "Hot Water" ) then

    hw_loop = OpenStudio::Model::PlantLoop.new(model)
    BTAP::Resources::HVAC::HVACTemplates::NECB2011::setup_hw_loop_with_components(model,hw_loop,boiler_fueltype, always_on)

  end  #of if statement


  # Create a PSZ for each zone

  # TO DO: need to apply this system to space types:

  #(1) automotive area: repair/parking garage, fire engine room, indoor truck bay

  #(2) supermarket/food service: food preparation with kitchen hood/vented appliance

  #(3) warehouse area (non-refrigerated spaces)



  zones.each do |zone|

    air_loop = OpenStudio::Model::AirLoopHVAC.new(model)


    air_loop.setName("#{zone.name} NECB System 4 PSZ")

    # When an air_loop is constructed, its constructor creates a sizing:system object

    # the default sizing:system constructor makes a system:sizing object

    # appropriate for a multizone VAV system

    # this systems is a constant volume system with no VAV terminals,

    # and therfore needs different default settings

    air_loop_sizing = air_loop.sizingSystem # TODO units

    air_loop_sizing.setTypeofLoadtoSizeOn("Sensible")
    air_loop_sizing.autosizeDesignOutdoorAirFlowRate
    air_loop_sizing.setMinimumSystemAirFlowRatio(1.0)
    air_loop_sizing.setPreheatDesignTemperature(7.0)
    air_loop_sizing.setPreheatDesignHumidityRatio(0.008)
    air_loop_sizing.setPrecoolDesignTemperature(12.8)
    air_loop_sizing.setPrecoolDesignHumidityRatio(0.008)
    air_loop_sizing.setCentralCoolingDesignSupplyAirTemperature(12.8)
    air_loop_sizing.setCentralHeatingDesignSupplyAirTemperature(40.0)
    air_loop_sizing.setSizingOption("NonCoincident")
    air_loop_sizing.setAllOutdoorAirinCooling(false)
    air_loop_sizing.setAllOutdoorAirinHeating(false)
    air_loop_sizing.setCentralCoolingDesignSupplyAirHumidityRatio(0.0085)
    air_loop_sizing.setCentralHeatingDesignSupplyAirHumidityRatio(0.0080)
    air_loop_sizing.setCoolingDesignAirFlowMethod("DesignDay")
    air_loop_sizing.setCoolingDesignAirFlowRate(0.0)
    air_loop_sizing.setHeatingDesignAirFlowMethod("DesignDay")
    air_loop_sizing.setHeatingDesignAirFlowRate(0.0)
    air_loop_sizing.setSystemOutdoorAirMethod("ZoneSum")

    fan = OpenStudio::Model::FanConstantVolume.new(model, always_on)
                  

    if ( heating_coil_type == "Electric") then           # electric coil

      htg_coil = OpenStudio::Model::CoilHeatingElectric.new(model,always_on)
    end

    if ( heating_coil_type == "Gas") then
      htg_coil = OpenStudio::Model::CoilHeatingGas.new(model, always_on)
    end

    #TO DO: other fuel-fired heating coil types? (not available in OpenStudio/E+ - may need to play with efficiency to mimic other fuel types)



    # Set up DX coil with NECB performance curve characteristics;


    clg_coil = BTAP::Resources::HVAC::Plant::add_onespeed_DX_coil(model,always_on)

    #oa_controller 

    oa_controller = OpenStudio::Model::ControllerOutdoorAir.new(model)
    


    #oa_system 

    oa_system = OpenStudio::Model::AirLoopHVACOutdoorAirSystem.new(model, oa_controller)

    # Add the components to the air loop

    # in order from closest to zone to furthest from zone

    supply_inlet_node = air_loop.supplyInletNode
    fan.addToNode(supply_inlet_node)
    htg_coil.addToNode(supply_inlet_node)
    clg_coil.addToNode(supply_inlet_node)
    oa_system.addToNode(supply_inlet_node)

    # Add a setpoint manager single zone reheat to control the

    # supply air temperature based on the needs of this zone

    setpoint_mgr_single_zone_reheat = OpenStudio::Model::SetpointManagerSingleZoneReheat.new(model)
    setpoint_mgr_single_zone_reheat.setControlZone(zone)
    setpoint_mgr_single_zone_reheat.setMinimumSupplyAirTemperature(13.0)
    setpoint_mgr_single_zone_reheat.addToNode(air_loop.supplyOutletNode)


    #Create sensible heat exchanger

    #              heat_exchanger = BTAP::Resources::HVAC::Plant::add_hrv(model)

    #              heat_exchanger.setSensibleEffectivenessat100HeatingAirFlow(0.5)

    #              heat_exchanger.setSensibleEffectivenessat75HeatingAirFlow(0.5)

    #              heat_exchanger.setSensibleEffectivenessat100CoolingAirFlow(0.5)

    #              heat_exchanger.setSensibleEffectivenessat75CoolingAirFlow(0.5)

    #              heat_exchanger.setLatentEffectivenessat100HeatingAirFlow(0.0)

    #              heat_exchanger.setLatentEffectivenessat75HeatingAirFlow(0.0)

    #              heat_exchanger.setLatentEffectivenessat100CoolingAirFlow(0.0)

    #              heat_exchanger.setLatentEffectivenessat75CoolingAirFlow(0.0)

    #              heat_exchanger.setSupplyAirOutletTemperatureControl(false)

    #

    #              Connect heat exchanger

    #              oa_node = oa_system.outboardOANode

    #              heat_exchanger.addToNode(oa_node.get)



    # Create a diffuser and attach the zone/diffuser pair to the air loop

    #diffuser = OpenStudio::Model::AirTerminalSingleDuctUncontrolled.new(model,always_on)

    diffuser = OpenStudio::Model::AirTerminalSingleDuctUncontrolled.new(model, always_on)
    air_loop.addBranchForZone(zone,diffuser.to_StraightComponent)

    if ( baseboard_type == "Electric") then

      #  zone_elec_baseboard = OpenStudio::Model::ZoneHVACBaseboardConvectiveElectric.new(model)

      zone_elec_baseboard = BTAP::Resources::HVAC::Plant::add_elec_baseboard(model)
      zone_elec_baseboard.addToThermalZone(zone)

    end

    if ( baseboard_type == "Hot Water") then
      baseboard_coil = BTAP::Resources::HVAC::Plant::add_hw_baseboard_coil(model)
      #Connect baseboard coil to hot water loop

      hw_loop.addDemandBranchForComponent(baseboard_coil)


      zone_baseboard = BTAP::Resources::HVAC::ZoneEquipment::add_zone_baseboard_convective_water(model, always_on, baseboard_coil)
      #add zone_baseboard to zone

      zone_baseboard.addToThermalZone(zone)
    end

  end  #zone loop



  return true
end

.add_sys6_multi_zone_built_up_system_with_baseboard_heating(model, zones, boiler_fueltype, heating_coil_type, baseboard_type, chiller_type, fan_type) ⇒ Object

end add_sys4_single_zone_make_up_air_unit_with_baseboard_heating



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# File 'lib/openstudio-standards/btap/hvac.rb', line 3022

def self.add_sys6_multi_zone_built_up_system_with_baseboard_heating( model ,zones,  boiler_fueltype, heating_coil_type, baseboard_type, chiller_type, fan_type )

  # System Type 6: VAV w/ Reheat

  # This measure creates:

  # a single hot water loop with a natural gas or electric boiler or for the building

  # a single chilled water loop with water cooled chiller for the building

  # a single condenser water loop for heat rejection from the chiller

  # a VAV system w/ hot water or electric heating, chilled water cooling, and

  # hot water or electric reheat for each story of the building

  # Arguments:

  # "boiler_fueltype" choices match OS choices for boiler fuel type: 

  # "NaturalGas","Electricity","PropaneGas","FuelOil#1","FuelOil#2","Coal","Diesel","Gasoline","OtherFuel1"

  # "heating_coil_type": "Electric" or "Hot Water"

  # "baseboard_type": "Electric" and "Hot Water"

  # "chiller_type": "Scroll";"Centrifugal";""Screw";"Reciprocating"

  # "fan_type": "AF_or_BI_rdg_fancurve";"AF_or_BI_inletvanes";"fc_inletvanes";"var_speed_drive"  


  always_on = model.alwaysOnDiscreteSchedule

  #Create hot water loop if baseboard or heating coil type is hydronic


  if ( baseboard_type == "Hot Water" ) || ( heating_coil_type == "Hot Water") then

    hw_loop =  OpenStudio::Model::PlantLoop.new(model)
    BTAP::Resources::HVAC::HVACTemplates::NECB2011::setup_hw_loop_with_components(model,hw_loop,boiler_fueltype, always_on)

  end  #of if statement


  # Chilled Water Plant


  chw_loop = OpenStudio::Model::PlantLoop.new(model)
  chiller = BTAP::Resources::HVAC::HVACTemplates::NECB2011::setup_chw_loop_with_components(model,chw_loop,chiller_type)

  # Condenser System


  cw_loop = OpenStudio::Model::PlantLoop.new(model)
  ctower = BTAP::Resources::HVAC::HVACTemplates::NECB2011::setup_cw_loop_with_components(model,cw_loop,chiller)
  
  # Make a Packaged VAV w/ PFP Boxes for each story of the building

  model.getBuildingStorys.sort.each do |story|
    if not ( BTAP::Geometry::BuildingStoreys::get_zones_from_storey(story) & zones).empty?

      air_loop = OpenStudio::Model::AirLoopHVAC.new(model)
      air_loop.setName("VAV with Reheat")
      sizingSystem = air_loop.sizingSystem
      sizingSystem.setCentralCoolingDesignSupplyAirTemperature(13.0)
      sizingSystem.setCentralHeatingDesignSupplyAirTemperature(13.0)

      fan = OpenStudio::Model::FanVariableVolume.new(model,always_on)
      fan.setFanPowerMinimumFlowRateInputMethod("Fraction")
      fan.setFanPowerCoefficient4(0.0)
      fan.setFanPowerCoefficient5(0.0)
      if(fan_type == "AF_or_BI_rdg_fancurve")
        fan.setFanPowerMinimumFlowFraction(0.47)
        fan.setFanPowerCoefficient1(0.227143)
        fan.setFanPowerCoefficient2(1.178929)
        fan.setFanPowerCoefficient3(-0.41071)
      elsif(fan_type == "AF_or_BI_inletvanes")
        fan.setFanPowerMinimumFlowFraction(0.35)
        fan.setFanPowerCoefficient1(0.584345)
        fan.setFanPowerCoefficient2(-0.57917)
        fan.setFanPowerCoefficient3(0.970238)
      elsif(fan_type == "fc_inletvanes")
        fan.setFanPowerMinimumFlowFraction(0.25)
        fan.setFanPowerCoefficient1(0.339619)
        fan.setFanPowerCoefficient2(-0.84814)
        fan.setFanPowerCoefficient3(1.495671)
      elsif(fan_type == "var_speed_drive")
        fan.setFanPowerMinimumFlowFraction(0.20)
        fan.setFanPowerCoefficient1(0.00153028)
        fan.setFanPowerCoefficient2(0.00520806)
        fan.setFanPowerCoefficient3(1.0086242)
      end

      if(heating_coil_type == "Hot Water")
        htg_coil = OpenStudio::Model::CoilHeatingWater.new(model,always_on)
        hw_loop.addDemandBranchForComponent(htg_coil)
      end
      if(heating_coil_type == "Electric")
        htg_coil = OpenStudio::Model::CoilHeatingElectric.new(model,always_on)
      end

      clg_coil = OpenStudio::Model::CoilCoolingWater.new(model,always_on)
      chw_loop.addDemandBranchForComponent(clg_coil)

      oa_controller = OpenStudio::Model::ControllerOutdoorAir.new(model)
    
      oa_system = OpenStudio::Model::AirLoopHVACOutdoorAirSystem.new(model,oa_controller)
    
      # Add the components to the air loop

      # in order from closest to zone to furthest from zone

      # TODO: still need to define the return fan (tried to access the air loop "returnAirNode" without success)

      # TODO: The OS sdk indicates that this keyword should be active but I get a "Not implemented" error when I

      # TODO: try to access it through "air_loop.returnAirNode"

      supply_inlet_node = air_loop.supplyInletNode
      supply_outlet_node = air_loop.supplyOutletNode
      fan.addToNode(supply_inlet_node)
      htg_coil.addToNode(supply_inlet_node)
      clg_coil.addToNode(supply_inlet_node)
      oa_system.addToNode(supply_inlet_node)
    
      #              return_inlet_node = air_loop.returnAirNode


      # Add a setpoint manager to control the

      # supply air to a constant temperature

      sat_c = 13.0
      sat_sch = OpenStudio::Model::ScheduleRuleset.new(model)
      sat_sch.setName("Supply Air Temp")
      sat_sch.defaultDaySchedule().setName("Supply Air Temp Default")
      sat_sch.defaultDaySchedule().addValue(OpenStudio::Time.new(0,24,0,0),sat_c)
      sat_stpt_manager = OpenStudio::Model::SetpointManagerScheduled.new(model,sat_sch)
      sat_stpt_manager.addToNode(supply_outlet_node)

      # TO-do ask Kamel about zonal assignments per storey. 


      # Make a VAV terminal with HW reheat for each zone on this story that is in intersection with the zones array. 

      # and hook the reheat coil to the HW loop

      ( BTAP::Geometry::BuildingStoreys::get_zones_from_storey(story) & zones).each do |zone|
        if(heating_coil_type == "Hot Water")
          reheat_coil = OpenStudio::Model::CoilHeatingWater.new(model,always_on)
          hw_loop.addDemandBranchForComponent(reheat_coil)
        elsif(heating_coil_type == "Electric")
          reheat_coil = OpenStudio::Model::CoilHeatingElectric.new(model,always_on)
        end
        
        vav_terminal = OpenStudio::Model::AirTerminalSingleDuctVAVReheat.new(model,always_on,reheat_coil)
        air_loop.addBranchForZone(zone,vav_terminal.to_StraightComponent)
        vav_terminal.setZoneMinimumAirFlowMethod("FixedFlowRate")
        #TODO: currently the minimum flow rate is set to 2 L/s-m2. In fact we need to create a minimum flow rate

        #TODO: schedule based on whether the zone is occupied or not as stipulated in 8.4.4.22 of NECB2011

        min_flow_rate = 0.002*zone.floorArea
        vav_terminal.setFixedMinimumAirFlowRate(min_flow_rate) 

        #Set zone baseboards

        if ( baseboard_type == "Electric") then
          zone_elec_baseboard = BTAP::Resources::HVAC::Plant::add_elec_baseboard(model)
          zone_elec_baseboard.addToThermalZone(zone)
        end
        if ( baseboard_type == "Hot Water") then
          baseboard_coil = BTAP::Resources::HVAC::Plant::add_hw_baseboard_coil(model)
          #Connect baseboard coil to hot water loop

          hw_loop.addDemandBranchForComponent(baseboard_coil)
          zone_baseboard = BTAP::Resources::HVAC::ZoneEquipment::add_zone_baseboard_convective_water(model, always_on, baseboard_coil)
          #add zone_baseboard to zone

          zone_baseboard.addToThermalZone(zone)
        end
        
      end
    end
  end # next story


  return true

end

.assign_zones_sys1(model, zones, boiler_fueltype, mau, mau_heating_coil_type, baseboard_type) ⇒ Object

wrapper methods for the auto_zoner



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# File 'lib/openstudio-standards/btap/hvac.rb', line 2304

def self.assign_zones_sys1( model, zones, boiler_fueltype, mau, mau_heating_coil_type, baseboard_type )
  return self.add_sys1_unitary_ac_baseboard_heating( model,zones,boiler_fueltype,mau,mau_heating_coil_type,baseboard_type)
end

.assign_zones_sys2(model, zones, boiler_fueltype, chiller_type, mua_cooling_type) ⇒ Object 



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# File 'lib/openstudio-standards/btap/hvac.rb', line 2308

def self.assign_zones_sys2(model, zones, boiler_fueltype,chiller_type,mua_cooling_type)
  self.add_sys2_FPFC_sys5_TPFC(model, zones, boiler_fueltype,chiller_type,"FPFC",mua_cooling_type)
end

.assign_zones_sys3(model, zones, boiler_fueltype, heating_coil_type, baseboard_type) ⇒ Object 



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# File 'lib/openstudio-standards/btap/hvac.rb', line 2312

def self.assign_zones_sys3(model, zones, boiler_fueltype,  heating_coil_type, baseboard_type)
  self.add_sys3and8_single_zone_packaged_rooftop_unit_with_baseboard_heating( model, zones, boiler_fueltype,  heating_coil_type, baseboard_type)
end

.assign_zones_sys4(model, zones, boiler_fueltype, heating_coil_type, baseboard_type) ⇒ Object 



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# File 'lib/openstudio-standards/btap/hvac.rb', line 2316

def self.assign_zones_sys4( model, zones, boiler_fueltype, heating_coil_type, baseboard_type)
  self.add_sys4_single_zone_make_up_air_unit_with_baseboard_heating( model, zones, boiler_fueltype, heating_coil_type, baseboard_type)
  return model
end

.assign_zones_sys5(model, zones, boiler_fueltype, chiller_type, mua_cooling_type) ⇒ Object 



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# File 'lib/openstudio-standards/btap/hvac.rb', line 2321

def self.assign_zones_sys5(model, zones, boiler_fueltype,chiller_type,mua_cooling_type)
  self.add_sys2_FPFC_sys5_TPFC(model, zones, boiler_fueltype,chiller_type,"TPFC",mua_cooling_type)
end

.assign_zones_sys6(model, zones, boiler_fueltype, heating_coil_type, baseboard_type, chiller_type, fan_type) ⇒ Object

To do: must unravel story vav assignment.



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# File 'lib/openstudio-standards/btap/hvac.rb', line 2326

def self.assign_zones_sys6( model ,zones,  boiler_fueltype, heating_coil_type, baseboard_type, chiller_type, fan_type )
  self.add_sys6_multi_zone_built_up_system_with_baseboard_heating( model ,zones,  boiler_fueltype, heating_coil_type, baseboard_type, chiller_type, fan_type )
end

.assign_zones_sys7(model, zones, boiler_fueltype, chiller_type, mua_cooling_type) ⇒ Object 



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# File 'lib/openstudio-standards/btap/hvac.rb', line 2330

def self.assign_zones_sys7(model, zones, boiler_fueltype,chiller_type,mua_cooling_type)
  #System 7 

  self.add_sys2_FPFC_sys5_TPFC(model, zones, boiler_fueltype,chiller_type,"FPFC",mua_cooling_type)
end

.setup_chw_loop_with_components(model, chw_loop, chiller_type) ⇒ Object

of setup_hw_loop_with_components



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# File 'lib/openstudio-standards/btap/hvac.rb', line 3225

def self.setup_chw_loop_with_components(model,chw_loop,chiller_type)

  chw_loop.setName("Chilled Water Loop")
  sizing_plant = chw_loop.sizingPlant
  sizing_plant.setLoopType("Cooling")
  sizing_plant.setDesignLoopExitTemperature(7.0)
  sizing_plant.setLoopDesignTemperatureDifference(6.0)       

  #pump = OpenStudio::Model::PumpConstantSpeed.new(model)

  chw_pump = OpenStudio::Model::PumpConstantSpeed.new(model)

  chiller = OpenStudio::Model::ChillerElectricEIR.new(model)
  chiller.setCondenserType("WaterCooled")
  # update name so it's in agreement with method used in Standards file

  chiller_name = chiller.name.to_s + " WaterCooled #{chiller_type}"
  chiller.setName(chiller_name)
  
  chiller_bypass_pipe = OpenStudio::Model::PipeAdiabatic.new(model)
  
  chw_supply_outlet_pipe = OpenStudio::Model::PipeAdiabatic.new(model)

  # Add the components to the chilled water loop

  chw_supply_inlet_node = chw_loop.supplyInletNode
  chw_supply_outlet_node = chw_loop.supplyOutletNode
  chw_pump.addToNode(chw_supply_inlet_node)
  chw_loop.addSupplyBranchForComponent(chiller)
  chw_loop.addSupplyBranchForComponent(chiller_bypass_pipe)
  chw_supply_outlet_pipe.addToNode(chw_supply_outlet_node)

  # Add a setpoint manager to control the

  # chilled water to a constant temperature

  chw_t_c = 7.0
  chw_t_sch = BTAP::Resources::Schedules::create_annual_constant_ruleset_schedule(model, "CHW Temp", "Temperature", chw_t_c)
  chw_t_stpt_manager = OpenStudio::Model::SetpointManagerScheduled.new(model,chw_t_sch)
  chw_t_stpt_manager.addToNode(chw_supply_outlet_node)

  return chiller

end

.setup_cw_loop_with_components(model, cw_loop, chiller) ⇒ Object

of setup_chw_loop_with_components



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# File 'lib/openstudio-standards/btap/hvac.rb', line 3265

def self.setup_cw_loop_with_components(model,cw_loop,chiller)

  cw_loop.setName("Condenser Water Loop")
  cw_sizing_plant = cw_loop.sizingPlant
  cw_sizing_plant.setLoopType("Condenser")
  cw_sizing_plant.setDesignLoopExitTemperature(29.0)
  cw_sizing_plant.setLoopDesignTemperatureDifference(6.0)

  cw_pump = OpenStudio::Model::PumpConstantSpeed.new(model)

  clg_tower = OpenStudio::Model::CoolingTowerSingleSpeed.new(model)

  # TO DO: Need to define and set cooling tower curves


  clg_tower_bypass_pipe = OpenStudio::Model::PipeAdiabatic.new(model)

  cw_supply_outlet_pipe = OpenStudio::Model::PipeAdiabatic.new(model)

  # Add the components to the condenser water loop

  cw_supply_inlet_node = cw_loop.supplyInletNode
  cw_supply_outlet_node = cw_loop.supplyOutletNode
  cw_pump.addToNode(cw_supply_inlet_node)
  cw_loop.addSupplyBranchForComponent(clg_tower)
  cw_loop.addSupplyBranchForComponent(clg_tower_bypass_pipe)
  cw_supply_outlet_pipe.addToNode(cw_supply_outlet_node)
  cw_loop.addDemandBranchForComponent(chiller)

  # Add a setpoint manager to control the

  # condenser water to constant temperature

  cw_t_c = 29.0
  cw_t_sch = BTAP::Resources::Schedules::create_annual_constant_ruleset_schedule(model, "CW Temp", "Temperature", cw_t_c)
  cw_t_stpt_manager = OpenStudio::Model::SetpointManagerScheduled.new(model, cw_t_sch)
  cw_t_stpt_manager.addToNode(cw_supply_outlet_node)

  return clg_tower

end

.setup_hw_loop_with_components(model, hw_loop, boiler_fueltype, pump_flow_sch) ⇒ Object 



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# File 'lib/openstudio-standards/btap/hvac.rb', line 3177

def self.setup_hw_loop_with_components(model,hw_loop,boiler_fueltype,pump_flow_sch)

  hw_loop.setName("Hot Water Loop")
  sizing_plant = hw_loop.sizingPlant
  sizing_plant.setLoopType("Heating")
  sizing_plant.setDesignLoopExitTemperature(82.0) #TODO units

  sizing_plant.setLoopDesignTemperatureDifference(16.0)

  #pump 

  pump = OpenStudio::Model::PumpConstantSpeed.new(model)
  #TODO: the keyword "setPumpFlowRateSchedule" does not seem to work. A message

  #was sent to NREL to let them know about this. Once there is a fix for this,

  #use the proper pump schedule depending on whether we have two-pipe or four-pipe

  #fan coils.

  #            pump.resetPumpFlowRateSchedule()

  #            pump.setPumpFlowRateSchedule(pump_flow_sch)


  #boiler 

  boiler = OpenStudio::Model::BoilerHotWater.new(model)                   
  boiler.setFuelType(boiler_fueltype)

  #boiler_bypass_pipe 

  boiler_bypass_pipe = OpenStudio::Model::PipeAdiabatic.new(model)
    
  #supply_outlet_pipe 

  supply_outlet_pipe = OpenStudio::Model::PipeAdiabatic.new(model)

  # Add the components to the hot water loop

  hw_supply_inlet_node = hw_loop.supplyInletNode
  hw_supply_outlet_node = hw_loop.supplyOutletNode
  pump.addToNode(hw_supply_inlet_node)

  hw_loop.addSupplyBranchForComponent(boiler)
  hw_loop.addSupplyBranchForComponent(boiler_bypass_pipe)
  supply_outlet_pipe.addToNode(hw_supply_outlet_node)

  # Add a setpoint manager to control the

  # hot water based on outdoor temperature

  hw_oareset_stpt_manager = OpenStudio::Model::SetpointManagerOutdoorAirReset.new(model)
  hw_oareset_stpt_manager.setControlVariable("Temperature")
  hw_oareset_stpt_manager.setSetpointatOutdoorLowTemperature(82.0)
  hw_oareset_stpt_manager.setOutdoorLowTemperature(-16.0)
  hw_oareset_stpt_manager.setSetpointatOutdoorHighTemperature(60.0)
  hw_oareset_stpt_manager.setOutdoorHighTemperature(0.0)
  hw_oareset_stpt_manager.addToNode(hw_supply_outlet_node)

end