Module: SmallOfficeDetailed

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

Overview

Custom changes for the SmallOfficeDetailed 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) ⇒ Boolean

add attic infiltration

Parameters:

  • template (String) —

    the model template

  • climate_zone (String) —

    ASHRAE climate zone, e.g. ‘ASHRAE 169-2013-4A’

  • model (OpenStudio::Model::Model) —

    OpenStudio model object

Returns:

  • (Boolean) —

    returns true if successful, false if not



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# File 'lib/openstudio-standards/prototypes/common/buildings/Prototype.SmallOfficeDetailed.rb', line 67

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')

  return false if template == 'DOE Ref 1980-2004' || template == 'DOE Ref Pre-1980'

  if model.getSpaceByName('Attic').is_initialized
    entry_space = model.getSpaceByName('Attic').get
  elsif model.getSpaceByName('Attic 1').is_initialized
    entry_space = model.getSpaceByName('Attic 1').get
  end
  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)
  return true
end

#add_door_infiltration(climate_zone, model) ⇒ Boolean

add door infiltration

Parameters:

Returns:

  • (Boolean) —

    returns true if successful, false if not



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# File 'lib/openstudio-standards/prototypes/common/buildings/Prototype.SmallOfficeDetailed.rb', line 31

def add_door_infiltration(climate_zone, model)
  # add extra infiltration for entry door in m3/s (there is no attic in 'DOE Ref Pre-1980')

  return false if 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' || template == '90.1-2016' || template == '90.1-2019'
    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)
  return true
end

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

geometry adjustments specific to the prototype model

Parameters:

  • model (OpenStudio::Model::Model) —

    OpenStudio model object

  • building_type (String the building type) —

    uilding_type [String the building type

  • climate_zone (String) —

    ASHRAE climate zone, e.g. ‘ASHRAE 169-2013-4A’

  • prototype_input (Hash) —

    hash of prototype inputs

Returns:

  • (Boolean) —

    returns true if successful, false if not



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# File 'lib/openstudio-standards/prototypes/common/buildings/Prototype.SmallOfficeDetailed.rb', line 186

def model_custom_geometry_tweaks(model, building_type, climate_zone, prototype_input)
  # Set original building North axis

  OpenstudioStandards::Geometry.model_set_building_north_axis(model, 0.0)
  return true
end

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

hvac adjustments specific to the prototype model

Parameters:

  • model (OpenStudio::Model::Model) —

    OpenStudio model object

  • building_type (String the building type) —

    uilding_type [String the building type

  • climate_zone (String) —

    ASHRAE climate zone, e.g. ‘ASHRAE 169-2013-4A’

  • prototype_input (Hash) —

    hash of prototype inputs

Returns:

  • (Boolean) —

    returns true if successful, false if not



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# File 'lib/openstudio-standards/prototypes/common/buildings/Prototype.SmallOfficeDetailed.rb', line 11

def model_custom_hvac_tweaks(model, building_type, climate_zone, prototype_input)
  # add extra infiltration for entry door

  add_door_infiltration(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(&:resetDefrostTimePeriodFraction)
  return true
end

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

swh adjustments specific to the prototype model

Parameters:

  • model (OpenStudio::Model::Model) —

    OpenStudio model object

  • building_type (String the building type) —

    uilding_type [String the building type

  • climate_zone (String) —

    ASHRAE climate zone, e.g. ‘ASHRAE 169-2013-4A’

  • prototype_input (Hash) —

    hash of prototype inputs

Returns:

  • (Boolean) —

    returns true if successful, false if not



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# File 'lib/openstudio-standards/prototypes/common/buildings/Prototype.SmallOfficeDetailed.rb', line 173

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) ⇒ Boolean

update water heater loss coefficient

Parameters:

Returns:

  • (Boolean) —

    returns true if successful, false if not



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

def update_waterheater_loss_coefficient(model)
  case template
  when '90.1-2004', '90.1-2007', '90.1-2010', '90.1-2013', '90.1-2016', '90.1-2019', 'NECB2011'
    model.getWaterHeaterMixeds.sort.each do |water_heater|
      water_heater.setOffCycleLossCoefficienttoAmbientTemperature(1.205980747)
      water_heater.setOnCycleLossCoefficienttoAmbientTemperature(1.205980747)
    end
  end
  return true
end