Module: LargeOfficeDetailed

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

Overview

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

Instance Method Summary collapse

Instance Method Details

#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.LargeOfficeDetailed.rb', line 111

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_custom_geometry_tweaks(building_type, climate_zone, prototype_input, model) ⇒ Object 



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# File 'lib/openstudio-standards/prototypes/common/buildings/Prototype.LargeOfficeDetailed.rb', line 107

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.LargeOfficeDetailed.rb', line 5

def model_custom_hvac_tweaks(building_type, climate_zone, prototype_input, model)
  system_to_space_map = define_hvac_system_map(building_type, climate_zone)

  system_to_space_map.each do |system|
    # find all zones associated with these spaces
    thermal_zones = []
    system['space_names'].each do |space_name|
      space = model.getSpaceByName(space_name)
      if space.empty?
        OpenStudio.logFree(OpenStudio::Error, 'openstudio.model.Model', "No space called #{space_name} was found in the model")
        return false
      end
      space = space.get
      zone = space.thermalZone
      if zone.empty?
        OpenStudio.logFree(OpenStudio::Error, 'openstudio.model.Model', "No thermal zone was created for the space called #{space_name}")
        return false
      end
      thermal_zones << zone.get
    end

    return_plenum = nil
    unless system['return_plenum'].nil?
      return_plenum_space = model.getSpaceByName(system['return_plenum'])
      if return_plenum_space.empty?
        OpenStudio.logFree(OpenStudio::Error, 'openstudio.model.Model', "No space called #{system['return_plenum']} was found in the model")
        return false
      end
      return_plenum_space = return_plenum_space.get
      return_plenum = return_plenum_space.thermalZone
      if return_plenum.empty?
        OpenStudio.logFree(OpenStudio::Error, 'openstudio.model.Model', "No thermal zone was created for the space called #{system['return_plenum']}")
        return false
      end
      return_plenum = return_plenum.get
    end
  end

  # replace EvaporativeFluidCoolerSingleSpeed with CoolingTowerTwoSpeed
  model.getPlantLoops.each do |plant_loop|
    next unless plant_loop.name.to_s.include? 'Heat Pump Loop'

    sup_wtr_high_temp_f = 65.0
    sup_wtr_low_temp_f = 41.0
    sup_wtr_high_temp_c = OpenStudio.convert(sup_wtr_high_temp_f, 'F', 'C').get
    sup_wtr_low_temp_c = OpenStudio.convert(sup_wtr_low_temp_f, 'F', 'C').get
    hp_high_temp_sch = model_add_constant_schedule_ruleset(model,
                                                           sup_wtr_high_temp_c,
                                                           name = "#{plant_loop.name} High Temp - #{sup_wtr_high_temp_f.round(0)}F")
    hp_low_temp_sch = model_add_constant_schedule_ruleset(model,
                                                          sup_wtr_low_temp_c,
                                                          name = "#{plant_loop.name} Low Temp - #{sup_wtr_low_temp_f.round(0)}F")

    # add cooling tower object
    cooling_tower = OpenStudio::Model::CoolingTowerTwoSpeed.new(model)
    cooling_tower.setName("#{plant_loop.name} Central Tower")
    plant_loop.addSupplyBranchForComponent(cooling_tower)
    #### Add SPM Scheduled Dual Setpoint to outlet of Fluid Cooler so correct Plant Operation Scheme is generated
    cooling_tower_stpt_manager = OpenStudio::Model::SetpointManagerScheduledDualSetpoint.new(model)
    cooling_tower_stpt_manager.setName("#{plant_loop.name} Fluid Cooler Scheduled Dual Setpoint")
    cooling_tower_stpt_manager.setHighSetpointSchedule(hp_high_temp_sch)
    cooling_tower_stpt_manager.setLowSetpointSchedule(hp_low_temp_sch)
    cooling_tower_stpt_manager.addToNode(cooling_tower.outletModelObject.get.to_Node.get)

    # remove EvaporativeFluidCoolerSingleSpeed object
    model.getEvaporativeFluidCoolerSingleSpeeds.each do |fluid_cooler|
      if fluid_cooler.plantLoop.get.name.to_s == plant_loop.name.to_s
        fluid_cooler.remove
        break
      end
    end
  end

  remove_basement_infiltration(model)

  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.LargeOfficeDetailed.rb', line 102

def model_custom_swh_tweaks(model, building_type, climate_zone, prototype_input)
  update_waterheater_loss_coefficient(model)
  return true
end

#remove_basement_infiltration(model) ⇒ Object 



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# File 'lib/openstudio-standards/prototypes/common/buildings/Prototype.LargeOfficeDetailed.rb', line 83

def remove_basement_infiltration(model)
  space_infltrations = model.getSpaceInfiltrationDesignFlowRates
  space_infltrations.each do |space_inf|
    if space_inf.name.to_s.include? 'Basement'
      space_inf = nil
    end
  end
end

#update_waterheater_loss_coefficient(model) ⇒ Object 



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# File 'lib/openstudio-standards/prototypes/common/buildings/Prototype.LargeOfficeDetailed.rb', line 92

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|
        water_heater.setOffCycleLossCoefficienttoAmbientTemperature(11.25413987)
        water_heater.setOnCycleLossCoefficienttoAmbientTemperature(11.25413987)
      end
  end
end