Module: RetailStandalone

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

Overview

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

Instance Method Summary collapse

Instance Method Details

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

TODO: The ElectricEquipment schedules are wrong in OpenStudio Standards… It needs to be ‘RetailStandalone BLDG_EQUIP_SCH’ for 90.1-2010 at least but probably all TODO: There is an OpenStudio bug where two heat exchangers are on the equipment list and it references the same single heat exchanger for both. This doubles the heat recovery energy. TODO: The HeatExchangerAirToAir is not calculating correctly. It does not equal the legacy IDF and has higher energy usage due to that. TODO: Need to determine if WaterHeater can be alone or if we need to ‘fake’ it.



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

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 the door infiltration for template 2004,2007,2010,2013
  case template
    when '90.1-2004', '90.1-2007', '90.1-2010', '90.1-2013'
      entry_space = model.getSpaceByName('Front_Entry').get
      infiltration_entry = OpenStudio::Model::SpaceInfiltrationDesignFlowRate.new(model)
      infiltration_entry.setName('Entry door Infiltration')
      infiltration_per_zone = 1.418672682
      infiltration_entry.setDesignFlowRate(infiltration_per_zone)
      infiltration_entry.setSchedule(model_add_schedule(model, 'RetailStandalone INFIL_Door_Opening_SCH'))
      infiltration_entry.setSpace(entry_space)
  end

  # Update the zone sizing SAT
  if template == 'DOE Ref 1980-2004' || template == 'DOE Ref Pre-1980'
    model.getSizingZones.each do |sizing_zone|
      sizing_zone.setZoneCoolingDesignSupplyAirTemperature(14)
    end
  end

  # Add economizer max fraction schedules
  case template
    when '90.1-2004', '90.1-2007', '90.1-2010', '90.1-2013', 'NREL ZNE Ready 2017'
      econ_eff_sch = model_add_schedule(model, 'RetailStandalone PSZ_Econ_MaxOAFrac_Sch')
      model.getAirLoopHVACs.each do |air_loop|
        oa_sys = air_loop.airLoopHVACOutdoorAirSystem
        if oa_sys.is_initialized
          oa_sys = oa_sys.get
          oa_controller = oa_sys.getControllerOutdoorAir
          oa_controller.setMaximumFractionofOutdoorAirSchedule(econ_eff_sch)
        end
      end
  end

  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.RetailStandalone.rb', line 62

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 



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# File 'lib/openstudio-standards/prototypes/common/buildings/Prototype.RetailStandalone.rb', line 52

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(4.10807252)
        water_heater.setOnCycleLossCoefficienttoAmbientTemperature(4.10807252)
      end
  end
end