module OpenstudioStandards::HVAC

The HVAC module provides methods create, modify, and get information about HVAC systems in the model

The HVAC module provides methods create, modify, and get information about HVAC systems in the model

The HVAC module provides methods create, modify, and get information about HVAC systems in the model

Public Class Methods

add_cbecs_hvac_system(model, standard, hvac_system_type, zones) click to toggle source

Adds the HVAC system as derived from the combinations of CBECS 2012 MAINHT and MAINCL fields. Mapping between combinations and HVAC systems per www.nrel.gov/docs/fy08osti/41956.pdf Table C-31

@param model [OpenStudio::Model::Model] OpenStudio model object @param standard [String] standard template, e.g. ‘90.1-2013’ @param hvac_system_type [String] HVAC system type @param zones [Array<OpenStudio::Model::ThermalZone>] Array of OpenStudio ThermalZone objects @return [Boolean] returns true if successful, false if not

# File lib/openstudio-standards/hvac/cbecs_hvac.rb, line 16
def self.add_cbecs_hvac_system(model, standard, hvac_system_type, zones)
  # the 'zones' argument includes zones that have heating, cooling, or both
  # if the HVAC system type serves a single zone, handle zones with only heating separately by adding unit heaters
  # applies to system types PTAC, PTHP, PSZ-AC, and Window AC
  heated_and_cooled_zones = zones.select { |zone| OpenstudioStandards::ThermalZone.thermal_zone_heated?(zone) && OpenstudioStandards::ThermalZone.thermal_zone_cooled?(zone) }
  heated_zones = zones.select { |zone| OpenstudioStandards::ThermalZone.thermal_zone_heated?(zone) }
  cooled_zones = zones.select { |zone| OpenstudioStandards::ThermalZone.thermal_zone_cooled?(zone) }
  cooled_only_zones = zones.select { |zone| !OpenstudioStandards::ThermalZone.thermal_zone_heated?(zone) && OpenstudioStandards::ThermalZone.thermal_zone_cooled?(zone) }
  heated_only_zones = zones.select { |zone| OpenstudioStandards::ThermalZone.thermal_zone_heated?(zone) && !OpenstudioStandards::ThermalZone.thermal_zone_cooled?(zone) }
  system_zones = heated_and_cooled_zones + cooled_only_zones

  # system type naming convention:
  # [ventilation strategy] [ cooling system and plant] [heating system and plant]

  case hvac_system_type

  when 'Baseboard electric'
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'Electricity', znht = nil, cl = nil, heated_zones)

  when 'Baseboard gas boiler'
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'NaturalGas', znht = nil, cl = nil, heated_zones)

  when 'Baseboard central air source heat pump'
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'AirSourceHeatPump', znht = nil, cl = nil, heated_zones)

  when 'Baseboard district hot water'
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'DistrictHeating', znht = nil, cl = nil, heated_zones)

  when 'Direct evap coolers with baseboard electric'
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'Electricity', znht = nil, cl = nil, heated_zones)
    standard.model_add_hvac_system(model, 'Evaporative Cooler', ht = nil, znht = nil, cl = 'Electricity', cooled_zones)

  when 'Direct evap coolers with baseboard gas boiler'
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'NaturalGas', znht = nil, cl = nil, heated_zones)
    standard.model_add_hvac_system(model, 'Evaporative Cooler', ht = nil, znht = nil, cl = 'Electricity', cooled_zones)

  when 'Direct evap coolers with baseboard central air source heat pump'
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'AirSourceHeatPump', znht = nil, cl = nil, heated_zones)
    standard.model_add_hvac_system(model, 'Evaporative Cooler', ht = nil, znht = nil, cl = 'Electricity', cooled_zones)

  when 'Direct evap coolers with baseboard district hot water'
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'DistrictHeating', znht = nil, cl = nil, heated_zones)
    standard.model_add_hvac_system(model, 'Evaporative Cooler', ht = nil, znht = nil, cl = 'Electricity', cooled_zones)

  when 'Direct evap coolers with forced air furnace'
    # Using unit heater to represent forced air furnace to limit to one airloop per thermal zone.
    standard.model_add_hvac_system(model, 'Unit Heaters', ht = 'NaturalGas', znht = nil, cl = nil, heated_zones)
    standard.model_add_hvac_system(model, 'Evaporative Cooler', ht = nil, znht = nil, cl = 'Electricity', cooled_zones)

  when 'Direct evap coolers with gas unit heaters'
    standard.model_add_hvac_system(model, 'Unit Heaters', ht = 'NaturalGas', znht = nil, cl = nil, heated_zones)
    standard.model_add_hvac_system(model, 'Evaporative Cooler', ht = nil, znht = nil, cl = 'Electricity', cooled_zones)

  when 'Direct evap coolers with no heat'
    standard.model_add_hvac_system(model, 'Evaporative Cooler', ht = nil, znht = nil, cl = 'Electricity', cooled_zones)

  when 'DOAS with fan coil chiller with boiler'
    standard.model_add_hvac_system(model, 'DOAS', ht = 'NaturalGas', znht = nil, cl = 'Electricity', zones)
    standard.model_add_hvac_system(model, 'Fan Coil', ht = 'NaturalGas', znht = nil, cl = 'Electricity', zones,
                                   zone_equipment_ventilation: false)

  when 'DOAS with fan coil chiller with central air source heat pump'
    standard.model_add_hvac_system(model, 'DOAS', ht = 'AirSourceHeatPump', znht = nil, cl = 'Electricity', zones)
    standard.model_add_hvac_system(model, 'Fan Coil', ht = 'AirSourceHeatPump', znht = nil, cl = 'Electricity', zones,
                                   zone_equipment_ventilation: false)

  when 'DOAS with fan coil chiller with district hot water'
    standard.model_add_hvac_system(model, 'DOAS', ht = 'DistrictHeating', znht = nil, cl = 'Electricity', zones)
    standard.model_add_hvac_system(model, 'Fan Coil', ht = 'DistrictHeating', znht = nil, cl = 'Electricity', zones,
                                   zone_equipment_ventilation: false)

  when 'DOAS with fan coil chiller with baseboard electric'
    standard.model_add_hvac_system(model, 'DOAS', ht = nil, znht = nil, cl = 'Electricity', zones)
    standard.model_add_hvac_system(model, 'Fan Coil', ht = nil, znht = nil, cl = 'Electricity', zones,
                                   zone_equipment_ventilation: false)
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'Electricity', znht = nil, cl = nil, heated_zones)

  when 'DOAS with fan coil chiller with gas unit heaters'
    standard.model_add_hvac_system(model, 'DOAS', ht = nil, znht = nil, cl = 'Electricity', zones)
    standard.model_add_hvac_system(model, 'Fan Coil', ht = nil, znht = nil, cl = 'Electricity', zones,
                                   zone_equipment_ventilation: false)
    standard.model_add_hvac_system(model, 'Unit Heaters', ht = 'NaturalGas', znht = nil, cl = nil, heated_zones)

  when 'DOAS with fan coil chiller with no heat'
    standard.model_add_hvac_system(model, 'DOAS', ht = nil, znht = nil, cl = 'Electricity', zones)
    standard.model_add_hvac_system(model, 'Fan Coil', ht = nil, znht = nil, cl = 'Electricity', zones,
                                   zone_equipment_ventilation: false)

  when 'DOAS with fan coil air-cooled chiller with boiler'
    standard.model_add_hvac_system(model, 'DOAS', ht = 'NaturalGas', znht = nil, cl = 'Electricity', zones,
                                   chilled_water_loop_cooling_type: 'AirCooled')
    standard.model_add_hvac_system(model, 'Fan Coil', ht = 'NaturalGas', znht = nil, cl = 'Electricity', zones,
                                   chilled_water_loop_cooling_type: 'AirCooled',
                                   zone_equipment_ventilation: false)

  when 'DOAS with fan coil air-cooled chiller with central air source heat pump'
    standard.model_add_hvac_system(model, 'DOAS', ht = 'AirSourceHeatPump', znht = nil, cl = 'Electricity', zones,
                                   chilled_water_loop_cooling_type: 'AirCooled')
    standard.model_add_hvac_system(model, 'Fan Coil', ht = 'AirSourceHeatPump', znht = nil, cl = 'Electricity', zones,
                                   chilled_water_loop_cooling_type: 'AirCooled',
                                   zone_equipment_ventilation: false)

  when 'DOAS with fan coil air-cooled chiller with district hot water'
    standard.model_add_hvac_system(model, 'DOAS', ht = 'DistrictHeating', znht = nil, cl = 'Electricity', zones,
                                   chilled_water_loop_cooling_type: 'AirCooled')
    standard.model_add_hvac_system(model, 'Fan Coil', ht = 'DistrictHeating', znht = nil, cl = 'Electricity', zones,
                                   chilled_water_loop_cooling_type: 'AirCooled',
                                   zone_equipment_ventilation: false)

  when 'DOAS with fan coil air-cooled chiller with baseboard electric'
    standard.model_add_hvac_system(model, 'DOAS', ht = nil, znht = nil, cl = 'Electricity', zones,
                                   chilled_water_loop_cooling_type: 'AirCooled')
    standard.model_add_hvac_system(model, 'Fan Coil', ht = nil, znht = nil, cl = 'Electricity', zones,
                                   chilled_water_loop_cooling_type: 'AirCooled',
                                   zone_equipment_ventilation: false)
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'Electricity', znht = nil, cl = nil, heated_zones)

  when 'DOAS with fan coil air-cooled chiller with gas unit heaters'
    standard.model_add_hvac_system(model, 'DOAS', ht = nil, znht = nil, cl = 'Electricity', zones,
                                   chilled_water_loop_cooling_type: 'AirCooled')
    standard.model_add_hvac_system(model, 'Fan Coil', ht = nil, znht = nil, cl = 'Electricity', zones,
                                   chilled_water_loop_cooling_type: 'AirCooled',
                                   zone_equipment_ventilation: false)
    standard.model_add_hvac_system(model, 'Unit Heaters', ht = 'NaturalGas', znht = nil, cl = nil, heated_zones)

  when 'DOAS with fan coil air-cooled chiller with no heat'
    standard.model_add_hvac_system(model, 'DOAS', ht = nil, znht = nil, cl = 'Electricity', zones,
                                   chilled_water_loop_cooling_type: 'AirCooled')
    standard.model_add_hvac_system(model, 'Fan Coil', ht = nil, znht = nil, cl = 'Electricity', zones,
                                   chilled_water_loop_cooling_type: 'AirCooled',
                                   zone_equipment_ventilation: false)

  when 'DOAS with fan coil district chilled water with boiler'
    standard.model_add_hvac_system(model, 'DOAS', ht = 'NaturalGas', znht = nil, cl = 'DistrictCooling', zones)
    standard.model_add_hvac_system(model, 'Fan Coil', ht = 'NaturalGas', znht = nil, cl = 'DistrictCooling', zones,
                                   zone_equipment_ventilation: false)

  when 'DOAS with fan coil district chilled water with central air source heat pump'
    standard.model_add_hvac_system(model, 'DOAS', ht = 'AirSourceHeatPump', znht = nil, cl = 'DistrictCooling', zones)
    standard.model_add_hvac_system(model, 'Fan Coil', ht = 'AirSourceHeatPump', znht = nil, cl = 'DistrictCooling', zones,
                                   zone_equipment_ventilation: false)

  when 'DOAS with fan coil district chilled water with district hot water'
    standard.model_add_hvac_system(model, 'DOAS', ht = 'DistrictHeating', znht = nil, cl = 'DistrictCooling', zones)
    standard.model_add_hvac_system(model, 'Fan Coil', ht = 'DistrictHeating', znht = nil, cl = 'DistrictCooling', zones,
                                   zone_equipment_ventilation: false)

  when 'DOAS with fan coil district chilled water with baseboard electric'
    standard.model_add_hvac_system(model, 'DOAS', ht = nil, znht = nil, cl = 'DistrictCooling', zones)
    standard.model_add_hvac_system(model, 'Fan Coil', ht = nil, znht = nil, cl = 'DistrictCooling', zones,
                                   zone_equipment_ventilation: false)
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'Electricity', znht = nil, cl = nil, heated_zones)

  when 'DOAS with fan coil district chilled water with gas unit heaters'
    standard.model_add_hvac_system(model, 'DOAS', ht = nil, znht = nil, cl = 'DistrictCooling', zones)
    standard.model_add_hvac_system(model, 'Fan Coil', ht = nil, znht = nil, cl = 'DistrictCooling', zones,
                                   zone_equipment_ventilation: false)
    standard.model_add_hvac_system(model, 'Unit Heaters', ht = 'NaturalGas', znht = nil, cl = nil, heated_zones)

  when 'DOAS with fan coil district chilled water with no heat'
    standard.model_add_hvac_system(model, 'DOAS', ht = nil, znht = nil, cl = 'DistrictCooling', zones)
    standard.model_add_hvac_system(model, 'Fan Coil', ht = nil, znht = nil, cl = 'DistrictCooling', zones,
                                   zone_equipment_ventilation: false)

  when 'DOAS with VRF'
    standard.model_add_hvac_system(model, 'DOAS', ht = 'Electricity', znht = nil, cl = 'Electricity', zones,
                                   air_loop_heating_type: 'DX',
                                   air_loop_cooling_type: 'DX')
    standard.model_add_hvac_system(model, 'VRF', ht = 'Electricity', znht = nil, cl = 'Electricity', zones)

  when 'DOAS with water source heat pumps fluid cooler with boiler'
    standard.model_add_hvac_system(model, 'DOAS', ht = 'NaturalGas', znht = nil, cl = 'Electricity', zones)
    standard.model_add_hvac_system(model, 'Water Source Heat Pumps', ht = 'NaturalGas', znht = nil, cl = 'Electricity', zones,
                                   heat_pump_loop_cooling_type: 'FluidCooler',
                                   zone_equipment_ventilation: false)

  when 'DOAS with water source heat pumps cooling tower with boiler'
    standard.model_add_hvac_system(model, 'DOAS', ht = 'NaturalGas', znht = nil, cl = 'Electricity', zones)
    standard.model_add_hvac_system(model, 'Water Source Heat Pumps', ht = 'NaturalGas', znht = nil, cl = 'Electricity', zones,
                                   heat_pump_loop_cooling_type: 'CoolingTower',
                                   zone_equipment_ventilation: false)

  when 'DOAS with water source heat pumps with ground source heat pump'
    standard.model_add_hvac_system(model, 'DOAS', ht = 'Electricity', znht = nil, cl = 'Electricity', zones,
                                   air_loop_heating_type: 'DX',
                                   air_loop_cooling_type: 'DX')
    standard.model_add_hvac_system(model, 'Ground Source Heat Pumps', ht = 'Electricity', znht = nil, cl = 'Electricity', zones,
                                   zone_equipment_ventilation: false)

  when 'DOAS with water source heat pumps district chilled water with district hot water'
    standard.model_add_hvac_system(model, 'DOAS', ht = 'DistrictHeating', znht = nil, cl = 'DistrictCooling', zones)
    standard.model_add_hvac_system(model, 'Water Source Heat Pumps', ht = 'DistrictHeating', znht = nil, cl = 'DistrictCooling', zones,
                                   zone_equipment_ventilation: false)

  # ventilation provided by zone fan coil unit in fan coil systems
  when 'Fan coil chiller with boiler'
    standard.model_add_hvac_system(model, 'Fan Coil', ht = 'NaturalGas', znht = nil, cl = 'Electricity', zones)

  when 'Fan coil chiller with central air source heat pump'
    standard.model_add_hvac_system(model, 'Fan Coil', ht = 'AirSourceHeatPump', znht = nil, cl = 'Electricity', zones)

  when 'Fan coil chiller with district hot water'
    standard.model_add_hvac_system(model, 'Fan Coil', ht = 'DistrictHeating', znht = nil, cl = 'Electricity', zones)

  when 'Fan coil chiller with baseboard electric'
    standard.model_add_hvac_system(model, 'Fan Coil', ht = nil, znht = nil, cl = 'Electricity', zones)
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'Electricity', znht = nil, cl = nil, heated_zones)

  when 'Fan coil chiller with gas unit heaters'
    standard.model_add_hvac_system(model, 'Fan Coil', ht = nil, znht = nil, cl = 'Electricity', zones)
    standard.model_add_hvac_system(model, 'Unit Heaters', ht = 'NaturalGas', znht = nil, cl = nil, heated_zones)

  when 'Fan coil chiller with no heat'
    standard.model_add_hvac_system(model, 'Fan Coil', ht = nil, znht = nil, cl = 'Electricity', zones)

  when 'Fan coil air-cooled chiller with boiler'
    standard.model_add_hvac_system(model, 'Fan Coil', ht = 'NaturalGas', znht = nil, cl = 'Electricity', zones,
                                   chilled_water_loop_cooling_type: 'AirCooled')

  when 'Fan coil air-cooled chiller with central air source heat pump'
    standard.model_add_hvac_system(model, 'Fan Coil', ht = 'AirSourceHeatPump', znht = nil, cl = 'Electricity', zones,
                                   chilled_water_loop_cooling_type: 'AirCooled')

  when 'Fan coil air-cooled chiller with district hot water'
    standard.model_add_hvac_system(model, 'Fan Coil', ht = 'DistrictHeating', znht = nil, cl = 'Electricity', zones,
                                   chilled_water_loop_cooling_type: 'AirCooled')

  when 'Fan coil air-cooled chiller with baseboard electric'
    standard.model_add_hvac_system(model, 'Fan Coil', ht = nil, znht = nil, cl = 'Electricity', zones,
                                   chilled_water_loop_cooling_type: 'AirCooled')
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'Electricity', znht = nil, cl = nil, heated_zones)

  when 'Fan coil air-cooled chiller with gas unit heaters'
    standard.model_add_hvac_system(model, 'Fan Coil', ht = nil, znht = nil, cl = 'Electricity', zones,
                                   chilled_water_loop_cooling_type: 'AirCooled')
    standard.model_add_hvac_system(model, 'Unit Heaters', ht = 'NaturalGas', znht = nil, cl = nil, heated_zones)

  when 'Fan coil air-cooled chiller with no heat'
    standard.model_add_hvac_system(model, 'Fan Coil', ht = nil, znht = nil, cl = 'Electricity', zones,
                                   chilled_water_loop_cooling_type: 'AirCooled')

  when 'Fan coil district chilled water with boiler'
    standard.model_add_hvac_system(model, 'Fan Coil', ht = 'NaturalGas', znht = nil, cl = 'DistrictCooling', zones)

  when 'Fan coil district chilled water with central air source heat pump'
    standard.model_add_hvac_system(model, 'Fan Coil', ht = 'AirSourceHeatPump', znht = nil, cl = 'DistrictCooling', zones)

  when 'Fan coil district chilled water with district hot water'
    standard.model_add_hvac_system(model, 'Fan Coil', ht = 'DistrictHeating', znht = nil, cl = 'DistrictCooling', zones)

  when 'Fan coil district chilled water with baseboard electric'
    standard.model_add_hvac_system(model, 'Fan Coil', ht = nil, znht = nil, cl = 'DistrictCooling', zones)
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'Electricity', znht = nil, cl = nil, heated_zones)

  when 'Fan coil district chilled water with gas unit heaters'
    standard.model_add_hvac_system(model, 'Fan Coil', ht = nil, znht = nil, cl = 'DistrictCooling', zones)
    standard.model_add_hvac_system(model, 'Unit Heaters', ht = 'NaturalGas', znht = nil, cl = nil, heated_zones)

  when 'Fan coil district chilled water with no heat'
    standard.model_add_hvac_system(model, 'Fan Coil', ht = nil, znht = nil, cl = 'DistrictCooling', zones)

  when 'Forced air furnace'
    # includes ventilation, whereas residential forced air furnace does not.
    standard.model_add_hvac_system(model, 'Forced Air Furnace', ht = 'NaturalGas', znht = nil, cl = nil, heated_zones)

  when 'Gas unit heaters'
    standard.model_add_hvac_system(model, 'Unit Heaters', ht = 'NaturalGas', znht = nil, cl = nil, heated_zones)

  when 'PTAC with baseboard electric'
    standard.model_add_hvac_system(model, 'PTAC', ht = nil, znht = nil, cl = 'Electricity', system_zones)
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'Electricity', znht = nil, cl = nil, heated_zones)

  when 'PTAC with baseboard gas boiler'
    standard.model_add_hvac_system(model, 'PTAC', ht = nil, znht = nil, cl = 'Electricity', system_zones)
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'NaturalGas', znht = nil, cl = nil, heated_zones)

  when 'PTAC with baseboard district hot water'
    standard.model_add_hvac_system(model, 'PTAC', ht = nil, znht = nil, cl = 'Electricity', system_zones)
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'DistrictHeating', znht = nil, cl = nil, heated_zones)

  when 'PTAC with gas unit heaters'
    standard.model_add_hvac_system(model, 'PTAC', ht = nil, znht = nil, cl = 'Electricity', system_zones)
    standard.model_add_hvac_system(model, 'Unit Heaters', ht = 'NaturalGas', znht = nil, cl = nil, heated_zones)

  when 'PTAC with electric coil'
    standard.model_add_hvac_system(model, 'PTAC', ht = nil, znht = 'Electricity', cl = 'Electricity', system_zones)
    # use 'Baseboard electric' for heated only zones
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'Electricity', znht = nil, cl = nil, heated_only_zones)

  when 'PTAC with gas coil'
    standard.model_add_hvac_system(model, 'PTAC', ht = nil, znht = 'NaturalGas', cl = 'Electricity', system_zones)
    # use 'Baseboard electric' for heated only zones
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'Electricity', znht = nil, cl = nil, heated_only_zones)

  when 'PTAC with gas boiler'
    standard.model_add_hvac_system(model, 'PTAC', ht = 'NaturalGas', znht = nil, cl = 'Electricity', system_zones)
    # use 'Baseboard gas boiler' for heated only zones
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'NaturalGas', znht = nil, cl = nil, heated_only_zones)

  when 'PTAC with central air source heat pump'
    standard.model_add_hvac_system(model, 'PTAC', ht = 'AirSourceHeatPump', znht = nil, cl = 'Electricity', system_zones)
    # use 'Baseboard central air source heat pump' for heated only zones
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'AirSourceHeatPump', znht = nil, cl = nil, heated_only_zones)

  when 'PTAC with district hot water'
    standard.model_add_hvac_system(model, 'PTAC', ht = 'DistrictHeating', znht = nil, cl = 'Electricity', system_zones)
    # use 'Baseboard district hot water heat' for heated only zones
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'DistrictHeating', znht = nil, cl = nil, heated_only_zones)

  when 'PTAC with no heat'
    standard.model_add_hvac_system(model, 'PTAC', ht = nil, znht = nil, cl = 'Electricity', system_zones)

  when 'PTHP'
    standard.model_add_hvac_system(model, 'PTHP', ht = 'Electricity', znht = nil, cl = 'Electricity', system_zones)
    # use 'Baseboard electric' for heated only zones
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'Electricity', znht = nil, cl = nil, heated_only_zones)

  when 'PSZ-AC with baseboard electric'
    standard.model_add_hvac_system(model, 'PSZ-AC', ht = nil, znht = nil, cl = 'Electricity', system_zones)
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'Electricity', znht = nil, cl = nil, heated_zones)

  when 'PSZ-AC with baseboard gas boiler'
    standard.model_add_hvac_system(model, 'PSZ-AC', ht = nil, znht = nil, cl = 'Electricity', system_zones)
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'NaturalGas', znht = nil, cl = nil, heated_zones)

  when 'PSZ-AC with baseboard district hot water'
    standard.model_add_hvac_system(model, 'PSZ-AC', ht = nil, znht = nil, cl = 'Electricity', system_zones)
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'DistrictHeating', znht = nil, cl = nil, heated_zones)

  when 'PSZ-AC with gas unit heaters'
    standard.model_add_hvac_system(model, 'PSZ-AC', ht = nil, znht = nil, cl = 'Electricity', system_zones)
    standard.model_add_hvac_system(model, 'Unit Heaters', ht = 'NaturalGas', znht = nil, cl = nil, heated_zones)

  when 'PSZ-AC with electric coil'
    standard.model_add_hvac_system(model, 'PSZ-AC', ht = nil, znht = 'Electricity', cl = 'Electricity', system_zones)
    # use 'Baseboard electric' for heated only zones
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'Electricity', znht = nil, cl = nil, heated_only_zones)

  when 'PSZ-AC with gas coil'
    standard.model_add_hvac_system(model, 'PSZ-AC', ht = nil, znht = 'NaturalGas', cl = 'Electricity', system_zones)
    # use 'Baseboard electric' for heated only zones
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'Electricity', znht = nil, cl = nil, heated_only_zones)

  when 'PSZ-AC with gas boiler'
    standard.model_add_hvac_system(model, 'PSZ-AC', ht = 'NaturalGas', znht = nil, cl = 'Electricity', system_zones)
    # use 'Baseboard gas boiler' for heated only zones
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'NaturalGas', znht = nil, cl = nil, heated_only_zones)

  when 'PSZ-AC with central air source heat pump'
    standard.model_add_hvac_system(model, 'PSZ-AC', ht = 'AirSourceHeatPump', znht = nil, cl = 'Electricity', system_zones)
    # use 'Baseboard central air source heat pump' for heated only zones
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'AirSourceHeatPump', znht = nil, cl = nil, heated_only_zones)

  when 'PSZ-AC with district hot water'
    standard.model_add_hvac_system(model, 'PSZ-AC', ht = 'DistrictHeating', znht = nil, cl = 'Electricity', system_zones)
    # use 'Baseboard district hot water' for heated only zones
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'DistrictHeating', znht = nil, cl = nil, heated_only_zones)

  when 'PSZ-AC with no heat'
    standard.model_add_hvac_system(model, 'PSZ-AC', ht = nil, znht = nil, cl = 'Electricity', cooled_zones)

  when 'PSZ-AC district chilled water with baseboard electric'
    standard.model_add_hvac_system(model, 'PSZ-AC', ht = nil, znht = nil, cl = 'DistrictCooling', system_zones)
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'Electricity', znht = nil, cl = nil, heated_zones)

  when 'PSZ-AC district chilled water with baseboard gas boiler'
    standard.model_add_hvac_system(model, 'PSZ-AC', ht = nil, znht = nil, cl = 'DistrictCooling', system_zones)
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'NaturalGas', znht = nil, cl = nil, heated_zones)

  when 'PSZ-AC district chilled water with baseboard district hot water'
    standard.model_add_hvac_system(model, 'PSZ-AC', ht = nil, znht = nil, cl = 'DistrictCooling', system_zones)
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'DistrictHeating', znht = nil, cl = nil, heated_zones)

  when 'PSZ-AC district chilled water with gas unit heaters'
    standard.model_add_hvac_system(model, 'PSZ-AC', ht = nil, znht = nil, cl = 'DistrictCooling', system_zones)
    standard.model_add_hvac_system(model, 'Unit Heaters', ht = 'NaturalGas', znht = nil, cl = nil, heated_zones)

  when 'PSZ-AC district chilled water with electric coil'
    standard.model_add_hvac_system(model, 'PSZ-AC', ht = nil, znht = 'Electricity', cl = 'DistrictCooling', system_zones)
    # use 'Baseboard electric' for heated only zones
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'Electricity', znht = nil, cl = nil, heated_only_zones)

  when 'PSZ-AC district chilled water with gas coil'
    standard.model_add_hvac_system(model, 'PSZ-AC', ht = nil, znht = 'NaturalGas', cl = 'DistrictCooling', system_zones)
    # use 'Baseboard electric' for heated only zones
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'Electricity', znht = nil, cl = nil, heated_only_zones)

  when 'PSZ-AC district chilled water with gas boiler'
    standard.model_add_hvac_system(model, 'PSZ-AC', ht = 'NaturalGas', znht = nil, cl = 'DistrictCooling', system_zones)
    # use 'Baseboard gas boiler' for heated only zones
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'NaturalGas', znht = nil, cl = nil, heated_only_zones)

  when 'PSZ-AC district chilled water with central air source heat pump'
    standard.model_add_hvac_system(model, 'PSZ-AC', ht = 'AirSourceHeatPump', znht = nil, cl = 'DistrictCooling', system_zones)
    # use 'Baseboard central air source heat pump' for heated only zones
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'AirSourceHeatPump', znht = nil, cl = nil, heated_only_zones)

  when 'PSZ-AC district chilled water with district hot water'
    standard.model_add_hvac_system(model, 'PSZ-AC', ht = 'DistrictHeating', znht = nil, cl = 'DistrictCooling', system_zones)
    # use 'Baseboard district hot water' for heated only zones
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'DistrictHeating', znht = nil, cl = nil, heated_only_zones)

  when 'PSZ-AC district chilled water with no heat'
    standard.model_add_hvac_system(model, 'PSZ-AC', ht = nil, znht = nil, cl = 'DistrictCooling', cooled_zones)

  when 'PSZ-HP'
    standard.model_add_hvac_system(model, 'PSZ-HP', ht = 'Electricity', znht = nil, cl = 'Electricity', system_zones)
    # use 'Baseboard electric' for heated only zones
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'Electricity', znht = nil, cl = nil, heated_only_zones)

  # PVAV systems by default use a DX coil for cooling
  when 'PVAV with gas boiler reheat', 'Packaged VAV Air Loop with Boiler' # second enumeration for backwards compatibility with Tenant Star project
    standard.model_add_hvac_system(model, 'PVAV Reheat', ht = 'NaturalGas', znht = 'NaturalGas', cl = 'Electricity', zones)

  when 'PVAV with central air source heat pump reheat'
    standard.model_add_hvac_system(model, 'PVAV Reheat', ht = 'AirSourceHeatPump', znht = 'AirSourceHeatPump', cl = 'Electricity', zones)

  when 'PVAV with district hot water reheat'
    standard.model_add_hvac_system(model, 'PVAV Reheat', ht = 'DistrictHeating', znht = 'DistrictHeating', cl = 'Electricity', zones)

  when 'PVAV with PFP boxes'
    standard.model_add_hvac_system(model, 'PVAV PFP Boxes', ht = 'Electricity', znht = 'Electricity', cl = 'Electricity', zones)

  when 'PVAV with gas heat with electric reheat', 'PVAV with gas coil heat with electric reheat'
    standard.model_add_hvac_system(self, 'PVAV Reheat', ht = 'Gas', znht = 'Electricity', cl = 'Electricity', zones,
                                   air_loop_heating_type: 'Gas')

  when 'PVAV with gas boiler heat with electric reheat'
    standard.model_add_hvac_system(self, 'PVAV Reheat', ht = 'Gas', znht = 'Electricity', cl = 'Electricity', zones)

  # all residential systems do not have ventilation
  when 'Residential AC with baseboard electric'
    standard.model_add_hvac_system(model, 'Residential AC', ht = nil, znht = nil, cl = nil, cooled_zones)
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'Electricity', znht = nil, cl = nil, heated_zones)

  when 'Residential AC with baseboard gas boiler'
    standard.model_add_hvac_system(model, 'Residential AC', ht = nil, znht = nil, cl = nil, cooled_zones)
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'NaturalGas', znht = nil, cl = nil, heated_zones)

  when 'Residential AC with baseboard central air source heat pump'
    standard.model_add_hvac_system(model, 'Residential AC', ht = nil, znht = nil, cl = nil, cooled_zones)
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'AirSourceHeatPump', znht = nil, cl = nil, heated_zones)

  when 'Residential AC with baseboard district hot water'
    standard.model_add_hvac_system(model, 'Residential AC', ht = nil, znht = nil, cl = nil, cooled_zones)
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'DistrictHeating', znht = nil, cl = nil, heated_zones)

  when 'Residential AC with residential forced air furnace'
    standard.model_add_hvac_system(model, 'Residential Forced Air Furnace with AC', ht = nil, znht = nil, cl = nil, zones)

  when 'Residential AC with no heat'
    standard.model_add_hvac_system(model, 'Residential AC', ht = nil, znht = nil, cl = nil, cooled_zones)

  when 'Residential heat pump'
    standard.model_add_hvac_system(model, 'Residential Air Source Heat Pump', ht = 'Electricity', znht = nil, cl = 'Electricity', zones)

  when 'Residential heat pump with no cooling'
    standard.model_add_hvac_system(model, 'Residential Air Source Heat Pump', ht = 'Electricity', znht = nil, cl = nil, heated_zones)

  when 'Residential forced air furnace'
    standard.model_add_hvac_system(model, 'Residential Forced Air Furnace', ht = 'NaturalGas', znht = nil, cl = nil, zones)

  when 'VAV chiller with gas boiler reheat'
    standard.model_add_hvac_system(model, 'VAV Reheat', ht = 'NaturalGas', znht = 'NaturalGas', cl = 'Electricity', zones)

  when 'VAV chiller with central air source heat pump reheat'
    standard.model_add_hvac_system(model, 'VAV Reheat', ht = 'AirSourceHeatPump', znht = 'AirSourceHeatPump', cl = 'Electricity', zones)

  when 'VAV chiller with district hot water reheat'
    standard.model_add_hvac_system(model, 'VAV Reheat', ht = 'DistrictHeating', znht = 'DistrictHeating', cl = 'Electricity', zones)

  when 'VAV chiller with PFP boxes'
    standard.model_add_hvac_system(model, 'VAV PFP Boxes', ht = 'NaturalGas', znht = 'NaturalGas', cl = 'Electricity', zones)

  when 'VAV chiller with gas coil reheat'
    standard.model_add_hvac_system(model, 'VAV Gas Reheat', ht = 'NaturalGas', ht = 'NaturalGas', cl = 'Electricity', zones)

  when 'VAV chiller with no reheat with baseboard electric'
    standard.model_add_hvac_system(model, 'VAV No Reheat', ht = 'NaturalGas', znht = nil, cl = 'Electricity', zones)
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'Electricity', znht = nil, cl = nil, heated_zones)

  when 'VAV chiller with no reheat with gas unit heaters'
    standard.model_add_hvac_system(model, 'VAV No Reheat', ht = 'NaturalGas', znht = nil, cl = 'Electricity', zones)
    standard.model_add_hvac_system(model, 'Unit Heaters', ht = 'NaturalGas', znht = nil, cl = nil, heated_zones)

  when 'VAV chiller with no reheat with zone heat pump'
    standard.model_add_hvac_system(model, 'VAV No Reheat', ht = 'NaturalGas', znht = nil, cl = 'Electricity', zones)
    # Using PTHP to represent zone heat pump to limit to one airloop per thermal zone.
    standard.model_add_hvac_system(model, 'PTHP', ht = 'Electricity', znht = nil, cl = 'Electricity', zones)

  when 'VAV air-cooled chiller with gas boiler reheat'
    standard.model_add_hvac_system(model, 'VAV Reheat', ht = 'NaturalGas', znht = 'NaturalGas', cl = 'Electricity', zones,
                                   chilled_water_loop_cooling_type: 'AirCooled')

  when 'VAV air-cooled chiller with central air source heat pump reheat'
    standard.model_add_hvac_system(model, 'VAV Reheat', ht = 'AirSourceHeatPump', znht = 'AirSourceHeatPump', cl = 'Electricity', zones,
                                   chilled_water_loop_cooling_type: 'AirCooled')

  when 'VAV air-cooled chiller with district hot water reheat'
    standard.model_add_hvac_system(model, 'VAV Reheat', ht = 'DistrictHeating', znht = 'DistrictHeating', cl = 'Electricity', zones,
                                   chilled_water_loop_cooling_type: 'AirCooled')

  when 'VAV air-cooled chiller with PFP boxes'
    standard.model_add_hvac_system(model, 'VAV PFP Boxes', ht = 'NaturalGas', znht = 'NaturalGas', cl = 'Electricity', zones,
                                   chilled_water_loop_cooling_type: 'AirCooled')

  when 'VAV air-cooled chiller with gas coil reheat'
    standard.model_add_hvac_system(model, 'VAV Gas Reheat', ht = 'NaturalGas', ht = 'NaturalGas', cl = 'Electricity', zones,
                                   chilled_water_loop_cooling_type: 'AirCooled')

  when 'VAV air-cooled chiller with no reheat with baseboard electric'
    standard.model_add_hvac_system(model, 'VAV No Reheat', ht = 'NaturalGas', znht = nil, cl = 'Electricity', zones,
                                   chilled_water_loop_cooling_type: 'AirCooled')
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'Electricity', znht = nil, cl = nil, heated_zones)

  when 'VAV air-cooled chiller with no reheat with gas unit heaters'
    standard.model_add_hvac_system(model, 'VAV No Reheat', ht = 'NaturalGas', znht = nil, cl = 'Electricity', zones,
                                   chilled_water_loop_cooling_type: 'AirCooled')
    standard.model_add_hvac_system(model, 'Unit Heaters', ht = 'NaturalGas', znht = nil, cl = nil, heated_zones)

  when 'VAV air-cooled chiller with no reheat with zone heat pump'
    standard.model_add_hvac_system(model, 'VAV No Reheat', ht = 'NaturalGas', znht = nil, cl = 'Electricity', zones,
                                   chilled_water_loop_cooling_type: 'AirCooled')
    # Using PTHP to represent zone heat pump to limit to one airloop per thermal zone.
    standard.model_add_hvac_system(model, 'PTHP', ht = 'Electricity', znht = nil, cl = 'Electricity', zones)

  when 'VAV district chilled water with gas boiler reheat'
    standard.model_add_hvac_system(model, 'VAV Reheat', ht = 'NaturalGas', znht = 'NaturalGas', cl = 'DistrictCooling', zones)

  when 'VAV district chilled water with central air source heat pump reheat'
    standard.model_add_hvac_system(model, 'VAV Reheat', ht = 'AirSourceHeatPump', znht = 'AirSourceHeatPump', cl = 'DistrictCooling', zones)

  when 'VAV district chilled water with district hot water reheat'
    standard.model_add_hvac_system(model, 'VAV Reheat', ht = 'DistrictHeating', znht = 'DistrictHeating', cl = 'DistrictCooling', zones)

  when 'VAV district chilled water with PFP boxes'
    standard.model_add_hvac_system(model, 'VAV PFP Boxes', ht = 'NaturalGas', znht = 'NaturalGas', cl = 'DistrictCooling', zones)

  when 'VAV district chilled water with gas coil reheat'
    standard.model_add_hvac_system(model, 'VAV Gas Reheat', ht = 'NaturalGas', ht = 'NaturalGas', cl = 'DistrictCooling', zones)

  when 'VAV district chilled water with no reheat with baseboard electric'
    standard.model_add_hvac_system(model, 'VAV No Reheat', ht = 'NaturalGas', znht = nil, cl = 'DistrictCooling', zones)
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'Electricity', znht = nil, cl = nil, heated_zones)

  when 'VAV district chilled water with no reheat with gas unit heaters'
    standard.model_add_hvac_system(model, 'VAV No Reheat', ht = 'NaturalGas', znht = nil, cl = 'DistrictCooling', zones)
    standard.model_add_hvac_system(model, 'Unit Heaters', ht = 'NaturalGas', znht = nil, cl = nil, heated_zones)

  when 'VAV district chilled water with no reheat with zone heat pump'
    standard.model_add_hvac_system(model, 'VAV No Reheat', ht = 'NaturalGas', znht = nil, cl = 'DistrictCooling', zones)
    # Using PTHP to represent zone heat pump to limit to one airloop per thermal zone.
    standard.model_add_hvac_system(model, 'PTHP', ht = 'Electricity', znht = nil, cl = 'Electricity', zones)

  when 'VRF'
    standard.model_add_hvac_system(model, 'VRF', ht = 'Electricity', znht = nil, cl = 'Electricity', zones)

  when 'Water source heat pumps fluid cooler with boiler'
    standard.model_add_hvac_system(model, 'Water Source Heat Pumps', ht = 'NaturalGas', znht = nil, cl = 'Electricity', zones,
                                   heat_pump_loop_cooling_type: 'FluidCooler')

  when 'Water source heat pumps cooling tower with boiler'
    standard.model_add_hvac_system(model, 'Water Source Heat Pumps', ht = 'NaturalGas', znht = nil, cl = 'Electricity', zones,
                                   heat_pump_loop_cooling_type: 'CoolingTower')

  when 'Water source heat pumps with ground source heat pump'
    standard.model_add_hvac_system(model, 'Ground Source Heat Pumps', ht = 'Electricity', znht = nil, cl = 'Electricity', zones)

  when 'Water source heat pumps district chilled water with district hot water'
    standard.model_add_hvac_system(model, 'Water Source Heat Pumps', ht = 'DistrictHeating', znht = nil, cl = 'DistrictCooling', zones)

  when 'Window AC with baseboard electric'
    standard.model_add_hvac_system(model, 'Window AC', ht = nil, znht = nil, cl = 'Electricity', cooled_zones)
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'Electricity', znht = nil, cl = nil, heated_zones)

  when 'Window AC with baseboard gas boiler'
    standard.model_add_hvac_system(model, 'Window AC', ht = nil, znht = nil, cl = 'Electricity', cooled_zones)
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'NaturalGas', znht = nil, cl = nil, heated_zones)

  when 'Window AC with baseboard central air source heat pump'
    standard.model_add_hvac_system(model, 'Window AC', ht = nil, znht = nil, cl = 'Electricity', cooled_zones)
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'AirSourceHeatPump', znht = nil, cl = nil, heated_zones)

  when 'Window AC with baseboard district hot water'
    standard.model_add_hvac_system(model, 'Window AC', ht = nil, znht = nil, cl = 'Electricity', cooled_zones)
    standard.model_add_hvac_system(model, 'Baseboards', ht = 'DistrictHeating', znht = nil, cl = nil, heated_zones)

  when 'Window AC with forced air furnace'
    standard.model_add_hvac_system(model, 'Window AC', ht = nil, znht = nil, cl = 'Electricity', cooled_zones)
    standard.model_add_hvac_system(model, 'Forced Air Furnace', ht = 'NaturalGas', znht = nil, cl = nil, heated_zones)

  when 'Window AC with unit heaters'
    standard.model_add_hvac_system(model, 'Window AC', ht = nil, znht = nil, cl = 'Electricity', cooled_zones)
    standard.model_add_hvac_system(model, 'Unit Heaters', ht = 'NaturalGas', znht = nil, cl = nil, heated_zones)

  when 'Window AC with no heat'
    standard.model_add_hvac_system(model, 'Window AC', ht = nil, znht = nil, cl = 'Electricity', cooled_zones)

  else
    OpenStudio.logFree(OpenStudio::Error, 'openstudio.standards.HVAC', "CBECS HVAC system type #{hvac_system_type} not recognized.")
    return false
  end
  return true
end
air_loop_hvac_direct_evap?(air_loop_hvac) click to toggle source

Returns whether air loop HVAC is a direct evaporative system

@param air_loop_hvac [<OpenStudio::Model::AirLoopHVAC>] OpenStudio AirLoopHVAC object @return [Boolean] returns true if successful, false if not

# File lib/openstudio-standards/hvac/air_loop/information.rb, line 11
def self.air_loop_hvac_direct_evap?(air_loop_hvac)
  # check if direct evap
  is_direct_evap = false
  air_loop_hvac.supplyComponents.each do |component|
    # Get the object type
    obj_type = component.iddObjectType.valueName.to_s
    case obj_type
    when 'OS_EvaporativeCooler_Direct_ResearchSpecial', 'OS_EvaporativeCooler_Indirect_ResearchSpecial'
      is_direct_evap = true
    end
  end
  return is_direct_evap
end
air_loop_hvac_unitary_system?(air_loop_hvac) click to toggle source

Returns whether air loop HVAC is a unitary system

@param air_loop_hvac [<OpenStudio::Model::AirLoopHVAC>] OpenStudio AirLoopHVAC object @return [Boolean] returns true if air_loop_hvac is a unitary system, false if not

# File lib/openstudio-standards/hvac/air_loop/information.rb, line 29
def self.air_loop_hvac_unitary_system?(air_loop_hvac)
  # check if unitary system
  is_unitary_system = false
  air_loop_hvac.supplyComponents.each do |component|
    # Get the object type
    obj_type = component.iddObjectType.valueName.to_s
    case obj_type
    when 'OS_AirLoopHVAC_UnitarySystem', 'OS_AirLoopHVAC_UnitaryHeatPump_AirToAir', 'OS_AirLoopHVAC_UnitaryHeatPump_AirToAir_MultiSpeed', 'OS_AirLoopHVAC_UnitaryHeatCool_VAVChangeoverBypass'
      is_unitary_system = true
    end
  end
  return is_unitary_system
end
setpoint_manager_min_max_temperature(spm) click to toggle source

Get the min and max setpoint values for a setpoint manager

@param spm [<OpenStudio::Model::SetpointManager>] OpenStudio SetpointManager object @return [Hash] returns as hash with ‘min_temp’ and ‘max_temp’ in degrees Fahrenheit

# File lib/openstudio-standards/hvac/setpoint_managers/information.rb, line 11
def self.setpoint_manager_min_max_temperature(spm)
  # use @standard to not build each time
  std = Standard.build('90.1-2013') # unused; just to access methods
  # Determine the min and max design temperatures
  loop_op_min_f = nil
  loop_op_max_f = nil
  obj_type = spm.iddObjectType.valueName.to_s
  case obj_type
  when 'OS_SetpointManager_Scheduled'
    sch = spm.to_SetpointManagerScheduled.get.schedule
    if sch.to_ScheduleRuleset.is_initialized
      min_c = OpenstudioStandards::Schedules.schedule_ruleset_get_min_max(sch.to_ScheduleRuleset.get)['min']
      max_c = OpenstudioStandards::Schedules.schedule_ruleset_get_min_max(sch.to_ScheduleRuleset.get)['max']
    elsif sch.to_ScheduleConstant.is_initialized
      min_c = OpenstudioStandards::Schedules.schedule_constant_get_min_max(sch.to_ScheduleConstant.get)['min']
      max_c = OpenstudioStandards::Schedules.schedule_constant_get_min_max(sch.to_ScheduleConstant.get)['max']
    else
      OpenStudio.logFree(OpenStudio::Error, 'openstudio.model.Model', "Could not find min and max values for #{obj_type} Setpoint Manager.")
    end
    loop_op_min_f = OpenStudio.convert(min_c, 'C', 'F').get
    loop_op_max_f = OpenStudio.convert(max_c, 'C', 'F').get
  when 'OS_SetpointManager_SingleZone_Reheat'
    spm = spm.to_SetpointManagerSingleZoneReheat.get
    loop_op_min_f = OpenStudio.convert(spm.minimumSupplyAirTemperature, 'C', 'F').get
    loop_op_max_f = OpenStudio.convert(spm.maximumSupplyAirTemperature, 'C', 'F').get
  when 'OS_SetpointManager_Warmest'
    spm = spm.to_SetpointManagerWarmest.get
    loop_op_min_f = OpenStudio.convert(spm.minimumSetpointTemperature, 'C', 'F').get
    loop_op_max_f = OpenStudio.convert(spm.maximumSetpointTemperature, 'C', 'F').get
  when 'OS_SetpointManager_WarmestTemperatureFlow'
    spm = spm.to_SetpointManagerWarmestTemperatureFlow.get
    loop_op_min_f = OpenStudio.convert(spm.minimumSetpointTemperature, 'C', 'F').get
    loop_op_max_f = OpenStudio.convert(spm.maximumSetpointTemperature, 'C', 'F').get
  when 'OS_SetpointManager_Scheduled_DualSetpoint'
    spm = spm.to_SetpointManagerScheduledDualSetpoint.get
    # Lowest setpoint is minimum of low schedule
    low_sch = spm.lowSetpointSchedule
    unless low_sch.empty?
      low_sch = low_sch.get
      min_c = nil
      if low_sch.to_ScheduleRuleset.is_initialized
        min_c = OpenstudioStandards::Schedules.schedule_ruleset_get_min_max(low_sch.to_ScheduleRuleset.get)['min']
      elsif low_sch.to_ScheduleConstant.is_initialized
        min_c = OpenstudioStandards::Schedules.schedule_constant_get_min_max(low_sch.to_ScheduleConstant.get)['min']
      else
        OpenStudio.logFree(OpenStudio::Error, 'openstudio.model.Model', "Could not find min and max values for #{obj_type} Setpoint Manager.")
      end
      loop_op_min_f = OpenStudio.convert(min_c, 'C', 'F').get unless min_c.nil?
    end

    # highest setpoint it maximum of high schedule
    high_sch = spm.highSetpointSchedule
    unless high_sch.empty?
      high_sch = high_sch.get
      max_c = nil
      if high_sch.to_ScheduleRuleset.is_initialized
        max_c = OpenstudioStandards::Schedules.schedule_ruleset_get_min_max(high_sch.to_ScheduleRuleset.get)['max']
      elsif high_sch.to_ScheduleConstant.is_initialized
        max_c = OpenstudioStandards::Schedules.schedule_constant_get_min_max(high_sch.to_ScheduleConstant.get)['max']
      else
        OpenStudio.logFree(OpenStudio::Error, 'openstudio.model.Model', "Could not find min and max values for #{obj_type} Setpoint Manager.")
      end
      loop_op_max_f = OpenStudio.convert(max_c, 'C', 'F').get unless max_c.nil?
    end
  when 'OS_SetpointManager_OutdoorAirReset'
    spm = spm.to_SetpointManagerOutdoorAirReset.get
    temp_1_f = OpenStudio.convert(spm.setpointatOutdoorHighTemperature, 'C', 'F').get
    temp_2_f = OpenStudio.convert(spm.setpointatOutdoorLowTemperature, 'C', 'F').get
    loop_op_min_f = [temp_1_f, temp_2_f].min
    loop_op_max_f = [temp_1_f, temp_2_f].max
  when 'OS_SetpointManager_FollowOutdoorAirTemperature'
    spm = spm.to_SetpointManagerFollowOutdoorAirTemperature.get
    loop_op_min_f = OpenStudio.convert(spm.minimumSetpointTemperature, 'C', 'F').get
    loop_op_max_f = OpenStudio.convert(spm.maximumSetpointTemperature, 'C', 'F').get
  else
    OpenStudio.logFree(OpenStudio::Error, 'openstudio.model.Model', "Could not find min and max values for #{obj_type} Setpoint Manager.")
  end

  return { 'min_temp' => loop_op_min_f, 'max_temp' => loop_op_max_f }
end
unitary_system_min_max_temperature_value(unitary_system) click to toggle source

Returns the unitary system minimum and maximum design temperatures

@param unitary_system [<OpenStudio::Model::ModelObject>] OpenStudio ModelObject object @return [Hash] returns as hash with ‘min_temp’ and ‘max_temp’ in degrees Fahrenheit

# File lib/openstudio-standards/hvac/air_loop/information.rb, line 47
def self.unitary_system_min_max_temperature_value(unitary_system)
  min_temp = nil
  max_temp = nil
  # Get the object type
  obj_type = unitary_system.iddObjectType.valueName.to_s
  case obj_type
  when 'OS_AirLoopHVAC_UnitarySystem'
    unitary_system = unitary_system.to_AirLoopHVACUnitarySystem.get
    if unitary_system.useDOASDXCoolingCoil
      min_temp = OpenStudio.convert(unitary_system.dOASDXCoolingCoilLeavingMinimumAirTemperature, 'C', 'F').get
    end
    if unitary_system.maximumSupplyAirTemperature.is_initialized
      max_temp = OpenStudio.convert(unitary_system.maximumSupplyAirTemperature.get, 'C', 'F').get
    end
  when 'OS_AirLoopHVAC_UnitaryHeatPump_AirToAir'
    unitary_system = unitary_system.to_AirLoopHVACUnitaryHeatPumpAirToAir.get
    if unitary_system.maximumSupplyAirTemperaturefromSupplementalHeater.is_initialized
      max_temp = OpenStudio.convert(unitary_system.maximumSupplyAirTemperaturefromSupplementalHeater.get, 'C', 'F').get
    end
  when 'OS_AirLoopHVAC_UnitaryHeatPump_AirToAir_MultiSpeed'
    unitary_system = unitary_system.to_AirLoopHVACUnitaryHeatPumpAirToAirMultiSpeed.get
    if unitary_system.maximumSupplyAirTemperaturefromSupplementalHeater.is_initialized
      max_temp = OpenStudio.convert(unitary_system.maximumSupplyAirTemperaturefromSupplementalHeater.get, 'C', 'F').get
    end
  when 'OS_AirLoopHVAC_UnitaryHeatCool_VAVChangeoverBypass'
    unitary_system = unitary_system.to_AirLoopHVACUnitaryHeatCoolVAVChangeoverBypass.get
    min_temp = OpenStudio.convert(unitary_system.minimumOutletAirTemperatureDuringCoolingOperation, 'C', 'F').get
    max_temp = OpenStudio.convert(unitary_system.maximumOutletAirTemperatureDuringHeatingOperation, 'C', 'F').get
  end

  return { 'min_temp' => min_temp, 'max_temp' => max_temp }
end