Module: Outpatient

Defined in:
lib/openstudio-standards/prototypes/common/buildings/Prototype.Outpatient.rb

Overview

Custom changes for the Outpatient prototype. These are changes that are inconsistent with other prototype building types.

Instance Method Summary collapse

Instance Method Details

#add_door_infiltration(climate_zone, model) ⇒ Object 



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# File 'lib/openstudio-standards/prototypes/common/buildings/Prototype.Outpatient.rb', line 137

def add_door_infiltration(climate_zone, model)
  # add extra infiltration for vestibule door
  case template
    when 'DOE Ref 1980-2004', 'DOE Ref Pre-1980'
      return true
    else
      vestibule_space = model.getSpaceByName('Floor 1 Vestibule').get
      infiltration_vestibule_door = OpenStudio::Model::SpaceInfiltrationDesignFlowRate.new(model)
      infiltration_vestibule_door.setName('Vestibule door Infiltration')
      infiltration_rate_vestibule_door = 0
      case template
        when '90.1-2004'
          infiltration_rate_vestibule_door = 1.186002811
          infiltration_vestibule_door.setSchedule(model_add_schedule(model, 'OutPatientHealthCare INFIL_Door_Opening_SCH_0.144'))
        when '90.1-2007', '90.1-2010', '90.1-2013'
          case climate_zone
            when 'ASHRAE 169-2006-1A', 'ASHRAE 169-2006-2A', 'ASHRAE 169-2006-2B'
              infiltration_rate_vestibule_door = 1.186002811
              infiltration_vestibule_door.setSchedule(model_add_schedule(model, 'OutPatientHealthCare INFIL_Door_Opening_SCH_0.144'))
            else
              infiltration_rate_vestibule_door = 0.776824762
              infiltration_vestibule_door.setSchedule(model_add_schedule(model, 'OutPatientHealthCare INFIL_Door_Opening_SCH_0.131'))
          end
      end
      infiltration_vestibule_door.setDesignFlowRate(infiltration_rate_vestibule_door)
      infiltration_vestibule_door.setSpace(vestibule_space)
  end
end

#add_extra_equip_elevator_pump_room(model) ⇒ Object 



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# File 'lib/openstudio-standards/prototypes/common/buildings/Prototype.Outpatient.rb', line 65

def add_extra_equip_elevator_pump_room(model)
  elevator_pump_room = model.getSpaceByName('Floor 1 Elevator Pump Room').get
  elec_equip_def = OpenStudio::Model::ElectricEquipmentDefinition.new(model)
  elec_equip_def.setName('Elevator Pump Room Electric Equipment Definition')
  elec_equip_def.setFractionLatent(0)
  elec_equip_def.setFractionRadiant(0.1)
  elec_equip_def.setFractionLost(0.9)
  elec_equip_def.setDesignLevel(48_165)
  elec_equip = OpenStudio::Model::ElectricEquipment.new(elec_equip_def)
  elec_equip.setName('Elevator Pump Room Elevator Equipment')
  elec_equip.setSpace(elevator_pump_room)
  case template
    when '90.1-2004', '90.1-2007', '90.1-2010', '90.1-2013'
      elec_equip.setSchedule(model_add_schedule(model, 'OutPatientHealthCare BLDG_ELEVATORS'))
    when 'DOE Ref Pre-1980', 'DOE Ref 1980-2004'
      elec_equip.setSchedule(model_add_schedule(model, 'OutPatientHealthCare BLDG_ELEVATORS_Pre2004'))
  end
  return true
end

#add_humidifier(hot_water_loop, model) ⇒ Object

add humidifier to AHU1 (contains operating room1)



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# File 'lib/openstudio-standards/prototypes/common/buildings/Prototype.Outpatient.rb', line 182

def add_humidifier(hot_water_loop, model)
  operatingroom1_space = model.getSpaceByName('Floor 1 Operating Room 1').get
  operatingroom1_zone = operatingroom1_space.thermalZone.get
  humidistat = OpenStudio::Model::ZoneControlHumidistat.new(model)
  humidistat.setHumidifyingRelativeHumiditySetpointSchedule(model_add_schedule(model, 'OutPatientHealthCare MinRelHumSetSch'))
  humidistat.setDehumidifyingRelativeHumiditySetpointSchedule(model_add_schedule(model, 'OutPatientHealthCare MaxRelHumSetSch'))
  operatingroom1_zone.setZoneControlHumidistat(humidistat)
  model.getAirLoopHVACs.sort.each do |air_loop|
    if air_loop.thermalZones.include? operatingroom1_zone
      humidifier = OpenStudio::Model::HumidifierSteamElectric.new(model)
      humidifier.setRatedCapacity(3.72E-5)
      humidifier.setRatedPower(100_000)
      humidifier.setName("#{air_loop.name.get} Electric Steam Humidifier")
      # get the water heating coil and add humidifier to the outlet of heating coil (right before fan)
      htg_coil = nil
      air_loop.supplyComponents.each do |equip|
        if equip.to_CoilHeatingWater.is_initialized
          htg_coil = equip.to_CoilHeatingWater.get
        end
      end
      heating_coil_outlet_node = htg_coil.airOutletModelObject.get.to_Node.get
      supply_outlet_node = air_loop.supplyOutletNode
      humidifier.addToNode(heating_coil_outlet_node)
      humidity_spm = OpenStudio::Model::SetpointManagerSingleZoneHumidityMinimum.new(model)
      case template
        when '90.1-2004', '90.1-2007', '90.1-2010', '90.1-2013'
          extra_elec_htg_coil = OpenStudio::Model::CoilHeatingElectric.new(model, model.alwaysOnDiscreteSchedule)
          extra_elec_htg_coil.setName('AHU1 extra Electric Htg Coil')
          extra_water_htg_coil = OpenStudio::Model::CoilHeatingWater.new(model, model.alwaysOnDiscreteSchedule)
          extra_water_htg_coil.setName('AHU1 extra Water Htg Coil')
          hot_water_loop.addDemandBranchForComponent(extra_water_htg_coil)
          extra_elec_htg_coil.addToNode(supply_outlet_node)
          extra_water_htg_coil.addToNode(supply_outlet_node)
      end
      # humidity_spm.addToNode(supply_outlet_node)
      humidity_spm.addToNode(humidifier.outletModelObject.get.to_Node.get)
      humidity_spm.setControlZone(operatingroom1_zone)
    end
  end
end

#adjust_clg_setpoint(climate_zone, model) ⇒ Object 



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# File 'lib/openstudio-standards/prototypes/common/buildings/Prototype.Outpatient.rb', line 85

def adjust_clg_setpoint(climate_zone, model)
  model.getSpaceTypes.sort.each do |space_type|
    space_type_name = space_type.name.get
    thermostat_name = space_type_name + ' Thermostat'
    thermostat = model.getThermostatSetpointDualSetpointByName(thermostat_name).get
    case template
      when '90.1-2004', '90.1-2007', '90.1-2010'
        case climate_zone
          when 'ASHRAE 169-2006-2B', 'ASHRAE 169-2006-1B', 'ASHRAE 169-2006-3B'
            thermostat.setCoolingSetpointTemperatureSchedule(model_add_schedule(model, 'OutPatientHealthCare CLGSETP_SCH_YES_OPTIMUM'))
        end
    end
  end
  return true
end

#adjust_infiltration(model) ⇒ Object 



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# File 'lib/openstudio-standards/prototypes/common/buildings/Prototype.Outpatient.rb', line 101

def adjust_infiltration(model)
  case template
    when 'DOE Ref Pre-1980', 'DOE Ref 1980-2004'
      model.getSpaces.sort.each do |space|
        space_type = space.spaceType.get
        # Skip interior spaces
        next if space_exterior_wall_and_window_area(space) <= 0
        # Skip spaces that have no infiltration objects to adjust
        next if space_type.spaceInfiltrationDesignFlowRates.size <= 0

        # get the infiltration information from the space type infiltration
        infiltration_space_type = space_type.spaceInfiltrationDesignFlowRates[0]
        infil_sch = infiltration_space_type.schedule.get
        infil_rate = nil
        infil_ach = nil
        if infiltration_space_type.flowperExteriorWallArea.is_initialized
          infil_rate = infiltration_space_type.flowperExteriorWallArea.get
        elsif infiltration_space_type.airChangesperHour.is_initialized
          infil_ach = infiltration_space_type.airChangesperHour.get
        end
        # Create an infiltration rate object for this space
        infiltration = OpenStudio::Model::SpaceInfiltrationDesignFlowRate.new(model)
        infiltration.setName("#{space.name} Infiltration")
        infiltration.setFlowperExteriorSurfaceArea(infil_rate) unless infil_rate.nil? || infil_rate.to_f.zero?
        infiltration.setAirChangesperHour(infil_ach) unless infil_ach.nil? || infil_ach.to_f.zero?
        infiltration.setSchedule(infil_sch)
        infiltration.setSpace(space)
      end
      model.getSpaceTypes.sort.each do |space_type|
        space_type.spaceInfiltrationDesignFlowRates.each(&:remove)
      end
    else
      return true
  end
end

#apply_minimum_total_ach(building_type, model) ⇒ Object

assign the minimum total air changes to the cooling minimum air flow in Sizing:Zone



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# File 'lib/openstudio-standards/prototypes/common/buildings/Prototype.Outpatient.rb', line 289

def apply_minimum_total_ach(building_type, model)
  model.getSpaces.sort.each do |space|
    space_type_name = space.spaceType.get.standardsSpaceType.get
    search_criteria = {
        'template' => template,
        'building_type' => building_type,
        'space_type' => space_type_name
    }
    data = model_find_object(standards_data['space_types'], search_criteria)

    if data.nil? ###
      OpenStudio.logFree(OpenStudio::Warn, 'openstudio.model.Model', "Could not find data for #{search_criteria}")
      next
    end

    # skip space type without minimum total air changes
    next if data['minimum_total_air_changes'].nil?

    # calculate the minimum total air flow
    minimum_total_ach = data['minimum_total_air_changes'].to_f
    space_volume = space.volume
    space_area = space.floorArea
    minimum_airflow_per_zone = minimum_total_ach * space_volume / 3600
    minimum_airflow_per_zone_floor_area = minimum_airflow_per_zone / space_area
    # add minimum total air flow limit to sizing:zone
    zone = space.thermalZone.get
    sizingzone = zone.sizingZone
    sizingzone.setCoolingDesignAirFlowMethod('DesignDayWithLimit')
    case template
      when 'DOE Ref Pre-1980', 'DOE Ref 1980-2004'
        sizingzone.setCoolingMinimumAirFlow(minimum_airflow_per_zone)
      when '90.1-2004', '90.1-2007', '90.1-2010', '90.1-2013'
        sizingzone.setCoolingMinimumAirFlowperZoneFloorArea(minimum_airflow_per_zone_floor_area)
    end
  end
end

#model_custom_hvac_tweaks(building_type, climate_zone, prototype_input, model) ⇒ Object 



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# File 'lib/openstudio-standards/prototypes/common/buildings/Prototype.Outpatient.rb', line 6

def model_custom_hvac_tweaks(building_type, climate_zone, prototype_input, model)
  OpenStudio.logFree(OpenStudio::Info, 'openstudio.model.Model', 'Started Adding HVAC')

  system_to_space_map = define_hvac_system_map(building_type, climate_zone)

  # add elevator for the elevator pump room (the fan&lights are already added via standard spreadsheet)
  add_extra_equip_elevator_pump_room(model)
  # adjust cooling setpoint at vintages 1B,2B,3B
  adjust_clg_setpoint(climate_zone, model)
  # Get the hot water loop
  hot_water_loop = nil
  model.getPlantLoops.sort.each do |loop|
    # If it has a boiler:hotwater, it is the correct loop
    unless loop.supplyComponents('OS:Boiler:HotWater'.to_IddObjectType).empty?
      hot_water_loop = loop
    end
  end
  # add humidifier to AHU1 (contains operating room 1)
  if hot_water_loop
    add_humidifier(hot_water_loop, model)
  else
    OpenStudio.logFree(OpenStudio::Warn, 'openstudio.model.Model', 'Could not find hot water loop to attach humidifier to.')
  end
  # adjust infiltration for vintages 'DOE Ref Pre-1980', 'DOE Ref 1980-2004'
  adjust_infiltration(model)
  # add door infiltration for vertibule
  add_door_infiltration(climate_zone, model)
  # reset boiler sizing factor to 0.3 (default 1)
  reset_boiler_sizing_factor(model)
  # assign the minimum total air changes to the cooling minimum air flow in Sizing:Zone
  apply_minimum_total_ach(building_type, model)

  # Some exceptions for the Outpatient
  # TODO Refactor: not sure if this is actually enabled in the original code
  #     if sys_name.include? 'PVAV Outpatient F1'
  #       # Outpatient two AHU1 and AHU2 have different HVAC schedule
  #       hvac_op_sch = model_add_schedule(model, 'OutPatientHealthCare AHU1-Fan_Pre2004')
  #       # Outpatient has different temperature settings for sizing
  #       clg_sa_temp_f = 52 # for AHU1 in Outpatient, SAT is 52F
  #       sys_dsn_clg_sa_temp_f = if template == 'DOE Ref 1980-2004' || template == 'DOE Ref Pre-1980'
  #                                 52
  #                               else
  #                                 45
  #                               end
  #       zn_dsn_clg_sa_temp_f = 52 # zone cooling design SAT
  #       zn_dsn_htg_sa_temp_f = 104 # zone heating design SAT
  #     elsif sys_name.include? 'PVAV Outpatient F2 F3'
  #       hvac_op_sch = model_add_schedule(model, 'OutPatientHealthCare AHU2-Fan_Pre2004')
  #       clg_sa_temp_f = 55 # for AHU2 in Outpatient, SAT is 55F
  #       sys_dsn_clg_sa_temp_f = 52
  #       zn_dsn_clg_sa_temp_f = 55 # zone cooling design SAT
  #       zn_dsn_htg_sa_temp_f = 104 # zone heating design SAT
  #     end

  OpenStudio.logFree(OpenStudio::Info, 'openstudio.model.Model', 'Finished adding HVAC')

  return true
end

#model_custom_swh_tweaks(model, building_type, climate_zone, prototype_input) ⇒ Object 



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# File 'lib/openstudio-standards/prototypes/common/buildings/Prototype.Outpatient.rb', line 326

def model_custom_swh_tweaks(model, building_type, climate_zone, prototype_input)
  update_waterheater_loss_coefficient(model)

  return true
end

#model_modify_oa_controller(model) ⇒ Object

for 90.1-2010 Outpatient, AHU2 set minimum outdoor air flow rate as 0 AHU1 doesn’t have economizer



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# File 'lib/openstudio-standards/prototypes/common/buildings/Prototype.Outpatient.rb', line 225

def model_modify_oa_controller(model)
  model.getAirLoopHVACs.sort.each do |air_loop|
    oa_system = air_loop.airLoopHVACOutdoorAirSystem.get
    controller_oa = oa_system.getControllerOutdoorAir
    controller_mv = controller_oa.controllerMechanicalVentilation
    # AHU1 OA doesn't have controller:mechanicalventilation
    if air_loop.name.to_s.include? 'Outpatient F1'
      controller_mv.setAvailabilitySchedule(model.alwaysOffDiscreteSchedule)
      # add minimum fraction of outdoor air schedule to AHU1
      controller_oa.setMinimumFractionofOutdoorAirSchedule(model_add_schedule(model, 'OutPatientHealthCare AHU-1_OAminOAFracSchedule'))
      # for AHU2, at vintages '90.1-2004', '90.1-2007', '90.1-2010', '90.1-2013', the minimum OA schedule is not the same as
      # airloop availability schedule, but separately assigned.
    elsif template == '90.1-2004' || template == '90.1-2007' || template == '90.1-2010' || template == '90.1-2013'
      controller_oa.setMinimumOutdoorAirSchedule(model_add_schedule(model, 'OutPatientHealthCare BLDG_OA_SCH'))
      # add minimum fraction of outdoor air schedule to AHU2
      controller_oa.setMinimumFractionofOutdoorAirSchedule(model_add_schedule(model, 'OutPatientHealthCare BLDG_OA_FRAC_SCH'))
    end
  end
end

#model_reset_or_room_vav_minimum_damper(prototype_input, model) ⇒ Object

For operating room 1&2 in 2010 and 2013, VAV minimum air flow is set by schedule



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# File 'lib/openstudio-standards/prototypes/common/buildings/Prototype.Outpatient.rb', line 246

def model_reset_or_room_vav_minimum_damper(prototype_input, model)
  case template
    when '90.1-2004', '90.1-2007'
      return true
    when '90.1-2010', '90.1-2013'
      model.getAirTerminalSingleDuctVAVReheats.sort.each do |airterminal|
        airterminal_name = airterminal.name.get
        if airterminal_name.include?('Floor 1 Operating Room 1') || airterminal_name.include?('Floor 1 Operating Room 2')
          airterminal.setZoneMinimumAirFlowMethod('Scheduled')
          airterminal.setMinimumAirFlowFractionSchedule(model_add_schedule(model, 'OutPatientHealthCare OR_MinSA_Sched'))
        end
      end
  end
end

#model_update_exhaust_fan_efficiency(model) ⇒ Object 



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# File 'lib/openstudio-standards/prototypes/common/buildings/Prototype.Outpatient.rb', line 267

def model_update_exhaust_fan_efficiency(model)
  case template
    when '90.1-2004', '90.1-2007', '90.1-2010', '90.1-2013'
      model.getFanZoneExhausts.sort.each do |exhaust_fan|
        fan_name = exhaust_fan.name.to_s
        if (fan_name.include? 'X-Ray') || (fan_name.include? 'MRI Room')
          exhaust_fan.setFanEfficiency(0.16)
          exhaust_fan.setPressureRise(125)
        else
          exhaust_fan.setFanEfficiency(0.31)
          exhaust_fan.setPressureRise(249)
        end
      end
    when 'DOE Ref Pre-1980', 'DOE Ref 1980-2004'
      model.getFanZoneExhausts.sort.each do |exhaust_fan|
        exhaust_fan.setFanEfficiency(0.338)
        exhaust_fan.setPressureRise(125)
      end
  end
end

#reset_boiler_sizing_factor(model) ⇒ Object 



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# File 'lib/openstudio-standards/prototypes/common/buildings/Prototype.Outpatient.rb', line 261

def reset_boiler_sizing_factor(model)
  model.getBoilerHotWaters.sort.each do |boiler|
    boiler.setSizingFactor(0.3)
  end
end

#update_waterheater_loss_coefficient(model) ⇒ Object 



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# File 'lib/openstudio-standards/prototypes/common/buildings/Prototype.Outpatient.rb', line 166

def update_waterheater_loss_coefficient(model)
  case template
    when '90.1-2004', '90.1-2007', '90.1-2010', '90.1-2013', 'NECB2011'
      model.getWaterHeaterMixeds.sort.each do |water_heater|
        if water_heater.name.to_s.include?('Booster')
          water_heater.setOffCycleLossCoefficienttoAmbientTemperature(1.053159296)
          water_heater.setOnCycleLossCoefficienttoAmbientTemperature(1.053159296)
        else
          water_heater.setOffCycleLossCoefficienttoAmbientTemperature(9.643286505)
          water_heater.setOnCycleLossCoefficienttoAmbientTemperature(9.643286505)
        end
      end
  end
end