Module: LargeHotel

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

Overview

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

Instance Method Summary collapse

Instance Method Details

#add_extra_equip_kitchen(model) ⇒ Object

add extra equipment for kitchen



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# File 'lib/openstudio-standards/prototypes/common/buildings/Prototype.LargeHotel.rb', line 117

def add_extra_equip_kitchen(model)
  kitchen_space = model.getSpaceByName('Kitchen_Flr_6')
  kitchen_space = kitchen_space.get
  kitchen_space_type = kitchen_space.spaceType.get
  elec_equip_def1 = OpenStudio::Model::ElectricEquipmentDefinition.new(model)
  elec_equip_def2 = OpenStudio::Model::ElectricEquipmentDefinition.new(model)
  elec_equip_def1.setName('Kitchen Electric Equipment Definition1')
  elec_equip_def2.setName('Kitchen Electric Equipment Definition2')
  case template
    when '90.1-2004', '90.1-2007', '90.1-2010', '90.1-2013'
      elec_equip_def1.setFractionLatent(0)
      elec_equip_def1.setFractionRadiant(0.25)
      elec_equip_def1.setFractionLost(0)
      elec_equip_def2.setFractionLatent(0)
      elec_equip_def2.setFractionRadiant(0.25)
      elec_equip_def2.setFractionLost(0)
      if template == '90.1-2013'
        elec_equip_def1.setDesignLevel(457.7)
        elec_equip_def2.setDesignLevel(285)
      else
        elec_equip_def1.setDesignLevel(457.7)
        elec_equip_def2.setDesignLevel(285)
      end
      # Create the electric equipment instance and hook it up to the space type
      elec_equip1 = OpenStudio::Model::ElectricEquipment.new(elec_equip_def1)
      elec_equip2 = OpenStudio::Model::ElectricEquipment.new(elec_equip_def2)
      elec_equip1.setName('Kitchen_Reach-in-Freezer')
      elec_equip2.setName('Kitchen_Reach-in-Refrigerator')
      elec_equip1.setSpaceType(kitchen_space_type)
      elec_equip2.setSpaceType(kitchen_space_type)
      elec_equip1.setSchedule(model_add_schedule(model, 'HotelLarge ALWAYS_ON'))
      elec_equip2.setSchedule(model_add_schedule(model, 'HotelLarge ALWAYS_ON'))
    # elec_equip2.setSchedule(model.alwaysOnDiscreteSchedule)
    # elec_equip2.setSchedule(model.alwaysOffDiscreteSchedule)
  end
end

#air_terminal_single_duct_vav_reheat_apply_initial_prototype_damper_position(air_terminal_single_duct_vav_reheat, zone_oa_per_area) ⇒ Object 



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# File 'lib/openstudio-standards/prototypes/common/buildings/Prototype.LargeHotel.rb', line 188

def air_terminal_single_duct_vav_reheat_apply_initial_prototype_damper_position(air_terminal_single_duct_vav_reheat, zone_oa_per_area)
  min_damper_position = template == '90.1-2010' || template == '90.1-2013' ? 0.2 : 0.3

  # Set the minimum flow fraction
  air_terminal_single_duct_vav_reheat.setConstantMinimumAirFlowFraction(min_damper_position)

  return true
end

#model_add_daylighting_controls(model) ⇒ Object

Add the daylighting controls for lobby, cafe, dinning and banquet



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# File 'lib/openstudio-standards/prototypes/common/buildings/Prototype.LargeHotel.rb', line 155

def model_add_daylighting_controls(model)
  space_names = ['Banquet_Flr_6', 'Dining_Flr_6', 'Cafe_Flr_1', 'Lobby_Flr_1']
  space_names.each do |space_name|
    space = model.getSpaceByName(space_name).get
    space_add_daylighting_controls(space, false, false)
  end
end

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



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# File 'lib/openstudio-standards/prototypes/common/buildings/Prototype.LargeHotel.rb', line 183

def model_custom_geometry_tweaks(building_type, climate_zone, prototype_input, model)

  return true
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.LargeHotel.rb', line 6

def model_custom_hvac_tweaks(building_type, climate_zone, prototype_input, model)
  OpenStudio.logFree(OpenStudio::Info, 'openstudio.model.Model', 'Started building type specific adjustments')

  # add extra equipment for kitchen
  add_extra_equip_kitchen(model)

  # Add Exhaust Fan
  space_type_map = define_space_type_map(building_type, climate_zone)
  exhaust_fan_space_types = []
  case template
    when '90.1-2004', '90.1-2007'
      exhaust_fan_space_types = ['Kitchen', 'Laundry']
    else
      exhaust_fan_space_types = ['Banquet', 'Kitchen', 'Laundry']
  end

  exhaust_fan_space_types.each do |space_type_name|
    space_type_data = standards_lookup_table_first(table_name: 'space_types', search_criteria:{'template' => template,
                                                                                               'building_type' => building_type,
                                                                                               'space_type' => space_type_name})
    if space_type_data.nil?
      OpenStudio.logFree(OpenStudio::Error, 'openstudio.model.Model', "Unable to find space type #{template}-#{building_type}-#{space_type_name}")
      return false
    end

    exhaust_schedule = model_add_schedule(model, space_type_data['exhaust_availability_schedule'])
    unless exhaust_schedule
      OpenStudio.logFree(OpenStudio::Error, 'openstudio.model.Model', "Unable to find Exhaust Schedule for space type #{template}-#{building_type}-#{space_type_name}")
      return false
    end

    balanced_exhaust_schedule = model_add_schedule(model, space_type_data['balanced_exhaust_fraction_schedule'])

    space_names = space_type_map[space_type_name]
    space_names.each do |space_name|
      space = model.getSpaceByName(space_name).get
      thermal_zone = space.thermalZone.get

      zone_exhaust_fan = OpenStudio::Model::FanZoneExhaust.new(model)
      zone_exhaust_fan.setName(space.name.to_s + ' Exhaust Fan')
      zone_exhaust_fan.setAvailabilitySchedule(exhaust_schedule)
      zone_exhaust_fan.setFanEfficiency(space_type_data['exhaust_fan_efficiency'])
      zone_exhaust_fan.setPressureRise(space_type_data['exhaust_fan_pressure_rise'])
      maximum_flow_rate = OpenStudio.convert(space_type_data['exhaust_fan_maximum_flow_rate'], 'cfm', 'm^3/s').get

      zone_exhaust_fan.setMaximumFlowRate(maximum_flow_rate)
      if balanced_exhaust_schedule.class.to_s != 'NilClass'
        zone_exhaust_fan.setBalancedExhaustFractionSchedule(balanced_exhaust_schedule)
      end
      zone_exhaust_fan.setEndUseSubcategory('Zone Exhaust Fans')
      zone_exhaust_fan.addToThermalZone(thermal_zone)

      if !space_type_data['exhaust_fan_power'].nil? && space_type_data['exhaust_fan_power'].to_f.nonzero?
        # Create the electric equipment definition
        exhaust_fan_equip_def = OpenStudio::Model::ElectricEquipmentDefinition.new(model)
        exhaust_fan_equip_def.setName("#{space_name} Electric Equipment Definition")
        exhaust_fan_equip_def.setDesignLevel(space_type_data['exhaust_fan_power'].to_f)
        exhaust_fan_equip_def.setFractionLatent(0)
        exhaust_fan_equip_def.setFractionRadiant(0)
        exhaust_fan_equip_def.setFractionLost(1)

        # Create the electric equipment instance and hook it up to the space type
        exhaust_fan_elec_equip = OpenStudio::Model::ElectricEquipment.new(exhaust_fan_equip_def)
        exhaust_fan_elec_equip.setName("#{space_name} Exhaust Fan Equipment")
        exhaust_fan_elec_equip.setSchedule(exhaust_schedule)
        exhaust_fan_elec_equip.setSpaceType(space.spaceType.get)
      end
    end
  end

  # adjust VAV system sizing
  model.getAirLoopHVACs.each do |air_loop|
    if air_loop.name.to_s.include? 'VAV WITH REHEAT'
      # economizer type
      oa_system = air_loop.airLoopHVACOutdoorAirSystem.get
      oa_intake_controller = oa_system.getControllerOutdoorAir
      oa_intake_controller.setEconomizerControlType('DifferentialEnthalpy')

      # zone sizing
      rht_sa_temp_c = OpenStudio.convert(90.0, 'F', 'C').get
      air_loop.thermalZones.each do |zone|
        air_terminal = zone.airLoopHVACTerminal
        if air_terminal.is_initialized
          air_terminal = air_terminal.get
          if air_terminal.to_AirTerminalSingleDuctVAVReheat.is_initialized
            air_terminal = air_terminal.to_AirTerminalSingleDuctVAVReheat.get
            air_terminal.setMaximumReheatAirTemperature(rht_sa_temp_c)
            reheat_coil = air_terminal.reheatCoil
            reheat_coil = reheat_coil.to_CoilHeatingWater.get
            reheat_coil.setRatedOutletAirTemperature(rht_sa_temp_c)
          end
        end
      end
    end
  end

  # Update Sizing Zone
  zone_sizing = model.getSpaceByName('Kitchen_Flr_6').get.thermalZone.get.sizingZone
  zone_sizing.setCoolingMinimumAirFlowFraction(0.7)

  zone_sizing = model.getSpaceByName('Laundry_Flr_1').get.thermalZone.get.sizingZone
  zone_sizing.setCoolingMinimumAirFlow(0.23567919336)

  OpenStudio.logFree(OpenStudio::Info, 'openstudio.model.Model', 'Finished building type specific adjustments')

  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.LargeHotel.rb', line 177

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

  return true
end

#update_waterheater_ambient_parameters(model) ⇒ Object 



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# File 'lib/openstudio-standards/prototypes/common/buildings/Prototype.LargeHotel.rb', line 163

def update_waterheater_ambient_parameters(model)
  model.getWaterHeaterMixeds.sort.each do |water_heater|
    if water_heater.name.to_s.include?('300gal')
      water_heater.resetAmbientTemperatureSchedule
      water_heater.setAmbientTemperatureIndicator('ThermalZone')		
      water_heater.setAmbientTemperatureThermalZone(model.getThermalZoneByName('Basement ZN').get)
    elsif water_heater.name.to_s.include?('6.0gal')
      water_heater.resetAmbientTemperatureSchedule
      water_heater.setAmbientTemperatureIndicator('ThermalZone')		
      water_heater.setAmbientTemperatureThermalZone(model.getThermalZoneByName('Kitchen_Flr_6 ZN').get)
    end
  end
end