# Custom changes for the Outpatient prototype.
# These are changes that are inconsistent with other prototype building types.
module Outpatient
# hvac adjustments specific to the prototype model
#
# @param model [OpenStudio::Model::Model] OpenStudio model object
# @param building_type [String the building type
# @param climate_zone [String] ASHRAE climate zone, e.g. 'ASHRAE 169-2013-4A'
# @param prototype_input [Hash] hash of prototype inputs
# @return [Boolean] returns true if successful, false if not
def model_custom_hvac_tweaks(model, building_type, climate_zone, prototype_input)
OpenStudio.logFree(OpenStudio::Info, 'openstudio.model.Model', 'Started Adding HVAC')
system_to_space_map = define_hvac_system_map(building_type, climate_zone)
# add elevator for the elevator pump room (the fan&lights are already added via standard spreadsheet)
add_extra_equip_elevator_pump_room(model)
# adjust cooling setpoint at vintages 1B,2B,3B
adjust_clg_setpoint(climate_zone, model)
# Get the hot water loop
hot_water_loop = nil
model.getPlantLoops.sort.each do |loop|
# If it has a boiler:hotwater, it is the correct loop
unless loop.supplyComponents('OS:Boiler:HotWater'.to_IddObjectType).empty?
hot_water_loop = loop
end
end
# add humidifier to AHU1 (contains operating room 1)
if hot_water_loop
add_humidifier(hot_water_loop, model)
else
OpenStudio.logFree(OpenStudio::Warn, 'openstudio.model.Model', 'Could not find hot water loop to attach humidifier to.')
end
# adjust minimum damper positions
model_adjust_vav_minimum_damper(model)
# adjust infiltration for vintages 'DOE Ref Pre-1980', 'DOE Ref 1980-2004'
adjust_infiltration(model)
# add door infiltration for vertibule
add_door_infiltration(climate_zone, model)
# reset boiler sizing factor to 0.3 (default 1)
reset_boiler_sizing_factor(model)
# assign the minimum total air changes to the cooling minimum air flow in Sizing:Zone
apply_minimum_total_ach(building_type, model)
# set coil sizing
if template == '90.1-2004' || template == '90.1-2007'
model.getCoilHeatingWaters.each do |coil|
if coil.name.to_s == 'PVAV Outpatient F1 Main Htg Coil' || coil.name.to_s == 'PVAV Outpatient F2 F3 Main Htg Coil'
coil.setRatedOutletAirTemperature(50.0)
end
end
end
# Some exceptions for the Outpatient
# @todo Refactor: not sure if this is actually enabled in the original code
# if system_name.include? 'PVAV Outpatient F1'
# # Outpatient two AHU1 and AHU2 have different HVAC schedule
# hvac_op_sch = model_add_schedule(model, 'OutPatientHealthCare AHU1-Fan_Pre2004')
# # Outpatient has different temperature settings for sizing
# clg_sa_temp_f = 52 # for AHU1 in Outpatient, SAT is 52F
# sys_dsn_clg_sa_temp_f = if template == 'DOE Ref 1980-2004' || template == 'DOE Ref Pre-1980'
# 52
# else
# 45
# end
# zn_dsn_clg_sa_temp_f = 52 # zone cooling design SAT
# zn_dsn_htg_sa_temp_f = 104 # zone heating design SAT
# elsif system_name.include? 'PVAV Outpatient F2 F3'
# hvac_op_sch = model_add_schedule(model, 'OutPatientHealthCare AHU2-Fan_Pre2004')
# clg_sa_temp_f = 55 # for AHU2 in Outpatient, SAT is 55F
# sys_dsn_clg_sa_temp_f = 52
# zn_dsn_clg_sa_temp_f = 55 # zone cooling design SAT
# zn_dsn_htg_sa_temp_f = 104 # zone heating design SAT
# end
OpenStudio.logFree(OpenStudio::Info, 'openstudio.model.Model', 'Finished adding HVAC')
return true
end
# add extra equipment for mechanical room
#
# @param model [OpenStudio::Model::Model] OpenStudio model object
# @return [Boolean] returns true if successful, false if not
def add_extra_equip_elevator_pump_room(model)
elevator_pump_room = model.getSpaceByName('Floor 1 Elevator Pump Room').get
elec_equip_def = OpenStudio::Model::ElectricEquipmentDefinition.new(model)
elec_equip_def.setName('Elevator Pump Room Electric Equipment Definition')
elec_equip_def.setFractionLatent(0)
elec_equip_def.setFractionRadiant(0.1)
elec_equip_def.setFractionLost(0.9)
elec_equip_def.setDesignLevel(48_165)
elec_equip = OpenStudio::Model::ElectricEquipment.new(elec_equip_def)
elec_equip.setName('Elevator Pump Room Elevator Equipment')
elec_equip.setSpace(elevator_pump_room)
case template
when '90.1-2004', '90.1-2007', '90.1-2010', '90.1-2013', '90.1-2016', '90.1-2019'
elec_equip.setSchedule(model_add_schedule(model, 'OutPatientHealthCare BLDG_ELEVATORS'))
# add elevator fan and lights for 90.1 prototypes
elec_equip_def2 = OpenStudio::Model::ElectricEquipmentDefinition.new(model)
elec_equip_def2.setName('Elevator Pump Room Electric Equipment Definition2')
elec_equip_def2.setFractionLatent(0)
elec_equip_def2.setFractionRadiant(0.1)
elec_equip_def2.setFractionLost(0.9)
case template
when '90.1-2004', '90.1-2007'
elec_equip_def2.setDesignLevel(485.7)
when '90.1-2010'
elec_equip_def2.setDesignLevel(317.7)
when '90.1-2013', '90.1-2016', '90.1-2019'
elec_equip_def2.setDesignLevel(188)
end
elec_equip2 = OpenStudio::Model::ElectricEquipment.new(elec_equip_def2)
elec_equip2.setName('Elevator Lights Fan')
elec_equip2.setSpace(elevator_pump_room)
case template # light fan schedule for outpatient already exist in the schedule data sheet.
when '90.1-2004', '90.1-2007'
elec_equip2.setSchedule(model_add_schedule(model, 'OutPatientHealthCare ELEV_LIGHT_FAN_SCH_24_7'))
when '90.1-2010', '90.1-2013', '90.1-2016', '90.1-2019'
elec_equip2.setSchedule(model_add_schedule(model, 'OutPatientHealthCare ELEV_LIGHT_FAN_SCH_ADD_DF'))
end
when 'DOE Ref Pre-1980', 'DOE Ref 1980-2004'
elec_equip.setSchedule(model_add_schedule(model, 'OutPatientHealthCare BLDG_ELEVATORS_Pre2004'))
end
return true
end
# adjust cooling setpoint
#
# @param climate_zone [String] ASHRAE climate zone, e.g. 'ASHRAE 169-2013-4A'
# @param model [OpenStudio::Model::Model] OpenStudio model object
# @return [Boolean] returns true if successful, false if not
def adjust_clg_setpoint(climate_zone, model)
model.getSpaceTypes.sort.each do |space_type|
space_type_name = space_type.name.get
thermostat_name = "#{space_type_name} Thermostat"
thermostat = model.getThermostatSetpointDualSetpointByName(thermostat_name).get
case template
when '90.1-2004', '90.1-2007', '90.1-2010'
case climate_zone
when 'ASHRAE 169-2006-0B',
'ASHRAE 169-2006-1B',
'ASHRAE 169-2006-2B',
'ASHRAE 169-2006-3B',
'ASHRAE 169-2013-0B',
'ASHRAE 169-2013-1B',
'ASHRAE 169-2013-2B',
'ASHRAE 169-2013-3B'
thermostat.setCoolingSetpointTemperatureSchedule(model_add_schedule(model, 'OutPatientHealthCare CLGSETP_SCH_YES_OPTIMUM'))
end
end
end
return true
end
# adjust infiltration
#
# @param model [OpenStudio::Model::Model] OpenStudio model object
# @return [Boolean] returns true if successful, false if not
def adjust_infiltration(model)
case template
when 'DOE Ref Pre-1980', 'DOE Ref 1980-2004'
model.getSpaces.sort.each do |space|
space_type = space.spaceType.get
# Skip interior spaces
next if OpenstudioStandards::Geometry.space_get_exterior_wall_and_subsurface_area(space) <= 0
# Skip spaces that have no infiltration objects to adjust
next if space_type.spaceInfiltrationDesignFlowRates.size <= 0
# get the infiltration information from the space type infiltration
infiltration_space_type = space_type.spaceInfiltrationDesignFlowRates[0]
infil_sch = infiltration_space_type.schedule.get
infil_rate = nil
infil_ach = nil
if infiltration_space_type.flowperExteriorWallArea.is_initialized
infil_rate = infiltration_space_type.flowperExteriorWallArea.get
elsif infiltration_space_type.airChangesperHour.is_initialized
infil_ach = infiltration_space_type.airChangesperHour.get
end
# Create an infiltration rate object for this space
infiltration = OpenStudio::Model::SpaceInfiltrationDesignFlowRate.new(model)
infiltration.setName("#{space.name} Infiltration")
infiltration.setFlowperExteriorSurfaceArea(infil_rate) unless infil_rate.nil? || infil_rate.to_f.zero?
infiltration.setAirChangesperHour(infil_ach) unless infil_ach.nil? || infil_ach.to_f.zero?
infiltration.setSchedule(infil_sch)
infiltration.setSpace(space)
end
model.getSpaceTypes.sort.each do |space_type|
space_type.spaceInfiltrationDesignFlowRates.each(&:remove)
end
else
return true
end
return true
end
# add door infiltration
#
# @param climate_zone [String] ASHRAE climate zone, e.g. 'ASHRAE 169-2013-4A'
# @param model [OpenStudio::Model::Model] OpenStudio model object
# @return [Boolean] returns true if successful, false if not
def add_door_infiltration(climate_zone, model)
# add extra infiltration for vestibule door
case template
when 'DOE Ref 1980-2004', 'DOE Ref Pre-1980'
return true
else
vestibule_space = model.getSpaceByName('Floor 1 Vestibule').get
infiltration_vestibule_door = OpenStudio::Model::SpaceInfiltrationDesignFlowRate.new(model)
infiltration_vestibule_door.setName('Vestibule door Infiltration')
infiltration_rate_vestibule_door = 0
case template
when '90.1-2004'
infiltration_rate_vestibule_door = 1.186002811
infiltration_vestibule_door.setSchedule(model_add_schedule(model, 'OutPatientHealthCare INFIL_Door_Opening_SCH_0.144'))
when '90.1-2007', '90.1-2010', '90.1-2013', '90.1-2016', '90.1-2019'
case climate_zone
when 'ASHRAE 169-2006-0A',
'ASHRAE 169-2006-1A',
'ASHRAE 169-2006-2A',
'ASHRAE 169-2006-2B',
'ASHRAE 169-2013-0A',
'ASHRAE 169-2013-1A',
'ASHRAE 169-2013-2A',
'ASHRAE 169-2013-2B'
infiltration_rate_vestibule_door = 1.186002811
infiltration_vestibule_door.setSchedule(model_add_schedule(model, 'OutPatientHealthCare INFIL_Door_Opening_SCH_0.144'))
else
infiltration_rate_vestibule_door = 0.776824762
infiltration_vestibule_door.setSchedule(model_add_schedule(model, 'OutPatientHealthCare INFIL_Door_Opening_SCH_0.131'))
end
end
infiltration_vestibule_door.setDesignFlowRate(infiltration_rate_vestibule_door)
infiltration_vestibule_door.setSpace(vestibule_space)
end
return true
end
# add humidifier to AHU1 (contains operating room1)
#
# @param hot_water_loop [OpenStudio::Model::PlantLoop] hot water loop
# @param model [OpenStudio::Model::Model] OpenStudio model object
# @return [Boolean] returns true if successful, false if not
def add_humidifier(hot_water_loop, model)
operatingroom1_space = model.getSpaceByName('Floor 1 Operating Room 1').get
operatingroom1_zone = operatingroom1_space.thermalZone.get
humidistat = OpenStudio::Model::ZoneControlHumidistat.new(model)
humidistat.setHumidifyingRelativeHumiditySetpointSchedule(model_add_schedule(model, 'OutPatientHealthCare MinRelHumSetSch'))
humidistat.setDehumidifyingRelativeHumiditySetpointSchedule(model_add_schedule(model, 'OutPatientHealthCare MaxRelHumSetSch'))
operatingroom1_zone.setZoneControlHumidistat(humidistat)
model.getAirLoopHVACs.sort.each do |air_loop|
if air_loop.thermalZones.include? operatingroom1_zone
humidifier = OpenStudio::Model::HumidifierSteamElectric.new(model)
humidifier.setRatedCapacity(3.72E-5)
humidifier.setRatedPower(100_000)
humidifier.setName("#{air_loop.name.get} Electric Steam Humidifier")
# get the water heating coil and add humidifier to the outlet of heating coil (right before fan)
htg_coil = nil
air_loop.supplyComponents.each do |equip|
if equip.to_CoilHeatingWater.is_initialized
htg_coil = equip.to_CoilHeatingWater.get
end
end
heating_coil_outlet_node = htg_coil.airOutletModelObject.get.to_Node.get
supply_outlet_node = air_loop.supplyOutletNode
humidifier.addToNode(heating_coil_outlet_node)
humidity_spm = OpenStudio::Model::SetpointManagerSingleZoneHumidityMinimum.new(model)
case template
when '90.1-2004', '90.1-2007', '90.1-2010', '90.1-2013', '90.1-2016', '90.1-2019'
create_coil_heating_electric(model,
air_loop_node: supply_outlet_node,
name: 'AHU1 extra Electric Htg Coil')
create_coil_heating_water(model,
hot_water_loop,
air_loop_node: supply_outlet_node,
name: 'AHU1 extra Water Htg Coil')
end
# humidity_spm.addToNode(supply_outlet_node)
humidity_spm.addToNode(humidifier.outletModelObject.get.to_Node.get)
humidity_spm.setControlZone(operatingroom1_zone)
end
end
return true
end
# for 90.1-2010 Outpatient, AHU2 set minimum outdoor air flow rate as 0
# AHU1 doesn't have economizer
#
# @param model [OpenStudio::Model::Model] OpenStudio model object
# @return [Boolean] returns true if successful, false if not
def model_modify_oa_controller(model)
model.getAirLoopHVACs.sort.each do |air_loop|
oa_system = air_loop.airLoopHVACOutdoorAirSystem.get
controller_oa = oa_system.getControllerOutdoorAir
controller_mv = controller_oa.controllerMechanicalVentilation
# AHU1 OA doesn't have controller:mechanicalventilation
if air_loop.name.to_s.include? 'Outpatient F1'
controller_mv.setAvailabilitySchedule(model.alwaysOffDiscreteSchedule)
# add minimum fraction of outdoor air schedule to AHU1
controller_oa.setMinimumFractionofOutdoorAirSchedule(model_add_schedule(model, 'OutPatientHealthCare AHU-1_OAminOAFracSchedule'))
# for AHU2, at vintages '90.1-2004', '90.1-2007', '90.1-2010', '90.1-2013', '90.1-2016', '90.1-2019' the minimum OA schedule is not the same as
# airloop availability schedule, but separately assigned.
elsif template == '90.1-2004' || template == '90.1-2007' || template == '90.1-2010' || template == '90.1-2013' || template == '90.1-2016' || template == '90.1-2019'
controller_oa.setMinimumOutdoorAirSchedule(model_add_schedule(model, 'OutPatientHealthCare BLDG_OA_SCH'))
# add minimum fraction of outdoor air schedule to AHU2
controller_oa.setMinimumFractionofOutdoorAirSchedule(model_add_schedule(model, 'OutPatientHealthCare BLDG_OA_FRAC_SCH'))
end
end
return true
end
# adjust room vav damper minimums
#
# @param model [OpenStudio::Model::Model] OpenStudio model object
# @return [Boolean] returns true if successful, false if not
def model_adjust_vav_minimum_damper(model)
# Minimum damper position for Outpatient prototype
# Based on AIA 2001 ventilation requirements
# See Section 5.2.2.16 in Thornton et al. 2010
# https://www.energycodes.gov/sites/default/files/documents/BECP_Energy_Cost_Savings_STD2010_May2011_v00.pdf
init_mdp = {
'FLOOR 1 ANESTHESIA' => 1.0,
'FLOOR 1 CLEAN' => 1.0,
'FLOOR 1 CLEAN WORK' => 1.0,
'FLOOR 1 LOBBY TOILET' => 1.0,
'FLOOR 1 MRI TOILET' => 1.0,
'FLOOR 1 NURSE TOILET' => 1.0,
'FLOOR 1 OPERATING ROOM 1' => 1.0,
'FLOOR 1 OPERATING ROOM 2' => 1.0,
'FLOOR 1 OPERATING ROOM 3' => 1.0,
'FLOOR 1 PACU' => 1.0,
'FLOOR 1 PRE-OP ROOM 1' => 1.0,
'FLOOR 1 PRE-OP ROOM 2' => 1.0,
'FLOOR 1 PRE-OP TOILET' => 1.0,
'FLOOR 1 PROCEDURE ROOM' => 1.0,
'FLOOR 1 RECOVERY ROOM' => 1.0,
'FLOOR 1 SOIL' => 1.0,
'FLOOR 1 SOIL HOLD' => 1.0,
'FLOOR 1 SOIL WORK' => 1.0,
'FLOOR 1 STEP DOWN' => 1.0
}
model.getThermalZones.each do |zone|
air_terminal = zone.airLoopHVACTerminal
if air_terminal.is_initialized
air_terminal = air_terminal.get
if air_terminal.to_AirTerminalSingleDuctVAVReheat.is_initialized
air_terminal = air_terminal.to_AirTerminalSingleDuctVAVReheat.get
vav_name = air_terminal.name.get
zone_oa_per_area = OpenstudioStandards::ThermalZone.thermal_zone_get_outdoor_airflow_rate_per_area(zone)
case template
# High OA zones
# Determine whether or not to use the high minimum guess.
# Cutoff was determined by correlating apparent minimum guesses
# to OA rates in prototypes since not well documented in papers.
when 'DOE Ref Pre-1980', 'DOE Ref 1980-2004'
air_terminal.setConstantMinimumAirFlowFraction(1.0) if vav_name.include?('Floor 1')
# Minimum damper position for Outpatient prototype
# Based on AIA 2001 ventilation requirements
# See Section 5.2.2.16 in Thornton et al. 2010
# https://www.energycodes.gov/sites/default/files/documents/BECP_Energy_Cost_Savings_STD2010_May2011_v00.pdf
when '90.1-2004', '90.1-2007', '90.1-2010', '90.1-2013', '90.1-2016', '90.1-2019'
zone_name = zone.name.to_s.upcase.gsub(' ZN', '').strip
if init_mdp.key? zone_name
air_terminal.setConstantMinimumAirFlowFraction(init_mdp[zone_name])
end
end
end
end
end
return true
end
# For operating room 1&2 in 2010, 2013, 2016, and 2019 VAV minimum air flow is set by schedule
# This is NOT called in model_custom_hvac_tweaks,
# instead it is called by model_reset_or_room_vav_minimum_damper AFTER the sizing run,
# so that the system is sized at a constant airflow fraction of 1.0,
# not 0.3 as defaulted in the zone sizing object
#
# @param prototype_input [Hash] hash of prototype inputs
# @param model [OpenStudio::Model::Model] OpenStudio model object
# @return [Boolean] returns true if successful, false if not
def model_reset_or_room_vav_minimum_damper(prototype_input, model)
case template
when '90.1-2010', '90.1-2013', '90.1-2016', '90.1-2019'
model.getAirTerminalSingleDuctVAVReheats.sort.each do |air_terminal|
air_terminal_name = air_terminal.name.get
if air_terminal_name.include?('Floor 1 Operating Room 1') || air_terminal_name.include?('Floor 1 Operating Room 2')
if model.version < OpenStudio::VersionString.new('3.0.1')
air_terminal.setZoneMinimumAirFlowMethod('Scheduled')
else
air_terminal.setZoneMinimumAirFlowInputMethod('Scheduled')
end
air_terminal.setMinimumAirFlowFractionSchedule(model_add_schedule(model, 'OutPatientHealthCare OR_MinSA_Sched'))
end
end
end
return true
end
# reset boiler sizing factor
#
# @param model [OpenStudio::Model::Model] OpenStudio model object
# @return [Boolean] returns true if successful, false if not
def reset_boiler_sizing_factor(model)
model.getBoilerHotWaters.sort.each do |boiler|
boiler.setSizingFactor(0.3)
end
return true
end
# update exhuast fan efficiency
#
# @param model [OpenStudio::Model::Model] OpenStudio model object
# @return [Boolean] returns true if successful, false if not
def model_update_exhaust_fan_efficiency(model)
case template
when '90.1-2004', '90.1-2007', '90.1-2010', '90.1-2013', '90.1-2016', '90.1-2019'
model.getFanZoneExhausts.sort.each do |exhaust_fan|
fan_name = exhaust_fan.name.to_s
if (fan_name.include? 'X-Ray') || (fan_name.include? 'MRI Room')
exhaust_fan.setFanEfficiency(0.16)
exhaust_fan.setPressureRise(125)
else
exhaust_fan.setFanEfficiency(0.31)
exhaust_fan.setPressureRise(249)
end
end
when 'DOE Ref Pre-1980', 'DOE Ref 1980-2004'
model.getFanZoneExhausts.sort.each do |exhaust_fan|
exhaust_fan.setFanEfficiency(0.338)
exhaust_fan.setPressureRise(125)
end
end
return true
end
# assign the minimum total air changes to the cooling minimum air flow in Sizing:Zone
#
# @param building_type [String the building type
# @param model [OpenStudio::Model::Model] OpenStudio model object
# @return [Boolean] returns true if successful, false if not
def apply_minimum_total_ach(building_type, model)
model.getSpaces.sort.each do |space|
space_type_name = space.spaceType.get.standardsSpaceType.get
search_criteria = {
'template' => template,
'building_type' => building_type,
'space_type' => space_type_name
}
data = standards_lookup_table_first(table_name: 'space_types', search_criteria: search_criteria)
if data.nil? ###
OpenStudio.logFree(OpenStudio::Warn, 'openstudio.model.Model', "Could not find data for #{search_criteria}")
next
end
# skip space type without minimum total air changes
next if data['minimum_total_air_changes'].nil?
# calculate the minimum total air flow
minimum_total_ach = data['minimum_total_air_changes'].to_f
space_volume = space.volume
space_area = space.floorArea
minimum_airflow_per_zone = minimum_total_ach * space_volume / 3600
minimum_airflow_per_zone_floor_area = minimum_airflow_per_zone / space_area
# add minimum total air flow limit to sizing:zone
zone = space.thermalZone.get
sizingzone = zone.sizingZone
sizingzone.setCoolingDesignAirFlowMethod('DesignDayWithLimit')
case template
when 'DOE Ref Pre-1980', 'DOE Ref 1980-2004'
sizingzone.setCoolingMinimumAirFlow(minimum_airflow_per_zone)
when '90.1-2004', '90.1-2007', '90.1-2010', '90.1-2013', '90.1-2016', '90.1-2019'
sizingzone.setCoolingMinimumAirFlowperZoneFloorArea(minimum_airflow_per_zone_floor_area)
end
end
return true
end
# swh adjustments specific to the prototype model
#
# @param model [OpenStudio::Model::Model] OpenStudio model object
# @param building_type [String the building type
# @param climate_zone [String] ASHRAE climate zone, e.g. 'ASHRAE 169-2013-4A'
# @param prototype_input [Hash] hash of prototype inputs
# @return [Boolean] returns true if successful, false if not
def model_custom_swh_tweaks(model, building_type, climate_zone, prototype_input)
return true
end
# geometry adjustments specific to the prototype model
#
# @param model [OpenStudio::Model::Model] OpenStudio model object
# @param building_type [String the building type
# @param climate_zone [String] ASHRAE climate zone, e.g. 'ASHRAE 169-2013-4A'
# @param prototype_input [Hash] hash of prototype inputs
# @return [Boolean] returns true if successful, false if not
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
# @!group AirTerminalSingleDuctVAVReheat
# Set the initial minimum damper position based on OA rate of the space and the template.
# Zones with low OA per area get lower initial guesses.
# Final position will be adjusted upward as necessary by Standards.AirLoopHVAC.apply_minimum_vav_damper_positions
#
# @param air_terminal_single_duct_vav_reheat [OpenStudio::Model::AirTerminalSingleDuctVAVReheat] the air terminal object
# @param zone_oa_per_area [Double] the zone outdoor air per area in m^3/s*m^2
# @return [Boolean] returns true if successful, false if not
def air_terminal_single_duct_vav_reheat_apply_initial_prototype_damper_position(air_terminal_single_duct_vav_reheat, zone_oa_per_area)
# Minimum damper position
# Based on AIA 2001 ventilation requirements
# See Section 5.2.2.16 in Thornton et al. 2010
# https://www.energycodes.gov/sites/default/files/documents/BECP_Energy_Cost_Savings_STD2010_May2011_v00.pdf
if template == '90.1-2004' || template == '90.1-2007'
min_damper_position = 0.3
init_mdp = {
'FLOOR 2 CONFERENCE TOILET' => 1.0,
'FLOOR 2 EXAM 1' => 1.0,
'FLOOR 2 EXAM 2' => 1.0,
'FLOOR 2 EXAM 3' => 1.0,
'FLOOR 2 EXAM 4' => 1.0,
'FLOOR 2 EXAM 5' => 1.0,
'FLOOR 2 EXAM 6' => 1.0,
'FLOOR 2 EXAM 7' => 1.0,
'FLOOR 2 EXAM 8' => 1.0,
'FLOOR 2 EXAM 9' => 1.0,
'FLOOR 2 RECEPTION TOILET' => 1.0,
'FLOOR 2 WORK TOILET' => 1.0,
'FLOOR 3 LOUNGE TOILET' => 1.0,
'FLOOR 3 OFFICE TOILET' => 1.0,
'FLOOR 3 PHYSICAL THERAPY 1' => 1.0,
'FLOOR 3 PHYSICAL THERAPY 2' => 1.0,
'FLOOR 3 PHYSICAL THERAPY TOILET' => 1.0,
'FLOOR 3 STORAGE 1' => 1.0,
'FLOOR 3 TREATMENT' => 1.0
}
elsif template == '90.1-2010' || template == '90.1-2013' || template == '90.1-2016' || template == '90.1-2019'
min_damper_position = 0.2
init_mdp = {
'FLOOR 2 CONFERENCE TOILET' => 1.0,
'FLOOR 2 EXAM 1' => 0.51,
'FLOOR 2 EXAM 2' => 1.0,
'FLOOR 2 EXAM 3' => 1.0,
'FLOOR 2 EXAM 4' => 0.64,
'FLOOR 2 EXAM 5' => 0.69,
'FLOOR 2 EXAM 6' => 0.94,
'FLOOR 2 EXAM 7' => 1.0,
'FLOOR 2 EXAM 8' => 0.93,
'FLOOR 2 EXAM 9' => 1.0,
'FLOOR 2 RECEPTION TOILET' => 1.0,
'FLOOR 2 WORK TOILET' => 1.0,
'FLOOR 3 LOUNGE TOILET' => 1.0,
'FLOOR 3 OFFICE TOILET' => 1.0,
'FLOOR 3 PHYSICAL THERAPY 1' => 0.69,
'FLOOR 3 PHYSICAL THERAPY 2' => 0.83,
'FLOOR 3 PHYSICAL THERAPY TOILET' => 1.0,
'FLOOR 3 STORAGE 1' => 1.0,
'FLOOR 3 TREATMENT' => 0.81
}
end
if init_mdp.nil?
min_damper_position = 0.3
else
airlp = air_terminal_single_duct_vav_reheat.airLoopHVAC.get
init_mdp.each do |zn_name, mdp|
if air_terminal_single_duct_vav_reheat.name.to_s.upcase.strip.include? zn_name.to_s.strip
min_damper_position = mdp
end
end
end
# Set the minimum flow fraction
air_terminal_single_duct_vav_reheat.setConstantMinimumAirFlowFraction(min_damper_position)
return true
end
# Type of SAT reset for this building type
#
# @param air_loop_hvac [OpenStudio::Model::AirLoopHVAC] air loop
# @return [String] Returns type of SAT reset
def air_loop_hvac_supply_air_temperature_reset_type(air_loop_hvac)
return 'oa'
end
end