Module: SmallOfficeDetailed

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

Overview

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

Instance Method Summary collapse

Instance Method Details

#add_attic_infiltration(template, climate_zone, model) ⇒ Object 



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# File 'lib/openstudio-standards/prototypes/common/buildings/Prototype.SmallOfficeDetailed.rb', line 51

def add_attic_infiltration(template, climate_zone, model)
  # add extra infiltration for attic in m3/s (there is no attic in 'DOE Ref Pre-1980')
  unless template == 'DOE Ref 1980-2004' || template == 'DOE Ref Pre-1980'
    entry_space = model.getSpaceByName('Attic').get
    infiltration_attic = OpenStudio::Model::SpaceInfiltrationDesignFlowRate.new(model)
    infiltration_attic.setName('attic Infiltration')
    infiltration_per_zone_attic = 0.2001
    infiltration_attic.setSchedule(model_add_schedule(model, 'Always On'))
    infiltration_attic.setDesignFlowRate(infiltration_per_zone_attic)
    infiltration_attic.setConstantTermCoefficient(1.0)
    infiltration_attic.setTemperatureTermCoefficient(0.0)
    infiltration_attic.setVelocityTermCoefficient(0.0)
    infiltration_attic.setVelocitySquaredTermCoefficient(0.0)
    infiltration_attic.setSpace(entry_space)
  end
end

#add_door_infiltration(template, climate_zone, model) ⇒ Object 



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# File 'lib/openstudio-standards/prototypes/common/buildings/Prototype.SmallOfficeDetailed.rb', line 22

def add_door_infiltration(template, climate_zone, model)
  # add extra infiltration for entry door in m3/s (there is no attic in 'DOE Ref Pre-1980')
  unless template == 'DOE Ref 1980-2004' || template == 'DOE Ref Pre-1980'
    entry_space = model.getSpaceByName('Lobby').get
    infiltration_entrydoor = OpenStudio::Model::SpaceInfiltrationDesignFlowRate.new(model)
    infiltration_entrydoor.setName('entry door Infiltration')
    infiltration_per_zone_entrydoor = 0
    if template == '90.1-2004'
      infiltration_per_zone_entrydoor = 0.129785425
      infiltration_entrydoor.setSchedule(model_add_schedule(model, 'OfficeSmall INFIL_Door_Opening_SCH'))
    elsif template == '90.1-2007' || template == '90.1-2010'|| template == '90.1-2013'
      case climate_zone
      when 'ASHRAE 169-2006-1A', 'ASHRAE 169-2006-2A', 'ASHRAE 169-2006-1B', 'ASHRAE 169-2006-2B'
        infiltration_per_zone_entrydoor = 0.129785425
        infiltration_entrydoor.setSchedule(model_add_schedule(model, 'OfficeSmall INFIL_Door_Opening_SCH'))
      else
        infiltration_per_zone_entrydoor = 0.076455414
        infiltration_entrydoor.setSchedule(model_add_schedule(model, 'OfficeSmall INFIL_Door_Opening_SCH_2013'))
      end
    end
    infiltration_entrydoor.setDesignFlowRate(infiltration_per_zone_entrydoor)
    infiltration_entrydoor.setConstantTermCoefficient(1.0)
    infiltration_entrydoor.setTemperatureTermCoefficient(0.0)
    infiltration_entrydoor.setVelocityTermCoefficient(0.0)
    infiltration_entrydoor.setVelocitySquaredTermCoefficient(0.0)
    infiltration_entrydoor.setSpace(entry_space)
  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.SmallOfficeDetailed.rb', line 140

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.SmallOfficeDetailed.rb', line 6

def model_custom_hvac_tweaks(building_type, climate_zone, prototype_input, model)
  # add extra infiltration for entry door
  add_door_infiltration(template, climate_zone, model)
  OpenStudio.logFree(OpenStudio::Info, 'openstudio.model.Model', 'Added door infiltration')

  # add extra infiltration for attic
  add_attic_infiltration(template, climate_zone, model)
  OpenStudio.logFree(OpenStudio::Info, 'openstudio.model.Model', 'Added attic infiltration')

  # reset defrost time fraction
  # TODO: set this to a reasonable defrost time fraction based on research and implement in Prototype.CoilHeatingDXSingleSpeed
  model.getCoilHeatingDXSingleSpeeds.each { |coil| coil.resetDefrostTimePeriodFraction }

  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.SmallOfficeDetailed.rb', line 134

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

  return true
end

#update_waterheater_loss_coefficient(model) ⇒ Object

end

end
return true

end



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# File 'lib/openstudio-standards/prototypes/common/buildings/Prototype.SmallOfficeDetailed.rb', line 124

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(1.205980747)
      water_heater.setOnCycleLossCoefficienttoAmbientTemperature(1.205980747)
    end
  end
end