Module: Laboratory

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

Overview

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

Instance Method Summary collapse

Instance Method Details

#adjust_doas_sizing_system(model) ⇒ Object 



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# File 'lib/openstudio-standards/prototypes/common/buildings/Prototype.Laboratory.rb', line 38

def adjust_doas_sizing_system(model)
  model.getAirLoopHVACs.each do |air_loop|
    if air_loop.name.to_s.include? 'OA'
      # system sizing
      sizing_system = air_loop.sizingSystem
      sizing_system.setTypeofLoadtoSizeOn('Sensible')
    end
  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.Laboratory.rb', line 72

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.Laboratory.rb', line 5

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

  reset_fume_hood_oa(model)
  adjust_doas_sizing_system(model)
  set_oa_control_for_lab_terminals(model)

  # TODO
  # # Add exhaust fan to fume hood zone
  # search_criteria = ...
  # fume_hood_space = model_find_object(standards_data['Space Types'], search_criteria)
  # fume_hood_zone_volume = fume_hood_space.getVolume...
  # flow_rate_fume_hood = fume_hood_zone_volume * fume_hood_space['Ventilation_Air_Changes...']
  # model_add_exhaust_fan(model, thermal_zones, flow_rate=flow_rate_fume_hood,  flow_fraction_schedule_name='Lab_FumeHood_Sch')

  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.Laboratory.rb', line 68

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

#model_modify_oa_controller(model) ⇒ Object

lab zones don’t have economizer, the air flow rate is determined by the ventilation requirement



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# File 'lib/openstudio-standards/prototypes/common/buildings/Prototype.Laboratory.rb', line 58

def model_modify_oa_controller(model)
  model.getAirLoopHVACs.sort.each do |air_loop|
    oa_sys = air_loop.airLoopHVACOutdoorAirSystem.get
    oa_control = oa_sys.getControllerOutdoorAir
    if air_loop.name.get.include?('DOAS')
      oa_control.setEconomizerControlType('NoEconomizer')
    end
  end
end

#reset_fume_hood_oa(model) ⇒ Object

For fume hood, the OA rate varies with the fume hood schedule So add “Proportional Control Minimum Outdoor Air Flow Rate Schedule” at the mean time, modify “Outdoor Air Method” to “ProportionalControlBasedOnDesignOARate” in Controller:MechanicalVentilation of the DOAS



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# File 'lib/openstudio-standards/prototypes/common/buildings/Prototype.Laboratory.rb', line 28

def reset_fume_hood_oa(model)
  fume_hood_spaces = []
  model.getSpaces.each do |space|
    next unless space.name.get.to_s.include? 'fumehood'

    ventilation = space.designSpecificationOutdoorAir.get
    ventilation.setOutdoorAirFlowRateFractionSchedule(model_add_schedule(model, 'Lab_FumeHood_Sch'))
  end
end

#set_oa_control_for_lab_terminals(model) ⇒ Object 



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# File 'lib/openstudio-standards/prototypes/common/buildings/Prototype.Laboratory.rb', line 48

def set_oa_control_for_lab_terminals(model)
  model.getAirTerminalSingleDuctVAVReheats.sort.each do |air_terminal|
    air_terminal_name = air_terminal.name.get
    if air_terminal_name.include?('Lab')
      air_terminal.setControlForOutdoorAir(true)
    end
  end
end