Class: CBES Abstract

Inherits:
Standard show all
Defined in:
lib/openstudio-standards/standards/cbes/cbes.rb,
lib/openstudio-standards/standards/cbes/cbes.Model.rb,
lib/openstudio-standards/standards/cbes/cbes.Space.rb,
lib/openstudio-standards/standards/cbes/cbes.PlantLoop.rb,
lib/openstudio-standards/standards/cbes/cbes.AirLoopHVAC.rb,
lib/openstudio-standards/prototypes/cbes/cbes.refrigeration.rb,
lib/openstudio-standards/prototypes/cbes/cbes.Model.elevators.rb

Overview

This class is abstract.

This abstract class holds methods that many versions of CBES share. If a method in this class is redefined by a subclass, the implementation in the subclass is used.

Constant Summary

Constants inherited from Standard

Standard::STANDARDS_LIST

Instance Attribute Summary

Attributes inherited from Standard

#space_multiplier_map, #standards_data, #template

Model collapse

Space collapse

PlantLoop collapse

AirLoopHVAC collapse

refrigeration collapse

elevators collapse

Instance Method Summary collapse

Methods inherited from Standard

#adjust_infiltration_to_lower_pressure, #adjust_infiltration_to_prototype_building_conditions, #adjust_sizing_system, #afue_to_thermal_eff, #air_loop_hvac_add_motorized_oa_damper, #air_loop_hvac_adjust_minimum_vav_damper_positions, #air_loop_hvac_adjust_minimum_vav_damper_positions_outpatient, #air_loop_hvac_allowable_system_brake_horsepower, #air_loop_hvac_apply_baseline_fan_pressure_rise, #air_loop_hvac_apply_economizer_integration, #air_loop_hvac_apply_economizer_limits, #air_loop_hvac_apply_energy_recovery_ventilator, #air_loop_hvac_apply_energy_recovery_ventilator_efficiency, #air_loop_hvac_apply_maximum_reheat_temperature, #air_loop_hvac_apply_minimum_vav_damper_positions, #air_loop_hvac_apply_prm_baseline_controls, #air_loop_hvac_apply_prm_baseline_economizer, #air_loop_hvac_apply_prm_baseline_fan_power, #air_loop_hvac_apply_prm_sizing_temperatures, #air_loop_hvac_apply_standard_controls, #air_loop_hvac_apply_vav_damper_action, #air_loop_hvac_data_center_area_served, #air_loop_hvac_dcv_required_when_erv, #air_loop_hvac_demand_control_ventilation_limits, #air_loop_hvac_disable_multizone_vav_optimization, #air_loop_hvac_dx_cooling?, #air_loop_hvac_economizer?, #air_loop_hvac_economizer_limits, #air_loop_hvac_economizer_required?, #air_loop_hvac_economizer_type_allowable?, #air_loop_hvac_enable_demand_control_ventilation, #air_loop_hvac_enable_multizone_vav_optimization, #air_loop_hvac_enable_optimum_start, #air_loop_hvac_enable_supply_air_temperature_reset_delta, #air_loop_hvac_enable_supply_air_temperature_reset_outdoor_temperature, #air_loop_hvac_enable_supply_air_temperature_reset_warmest_zone, #air_loop_hvac_enable_unoccupied_fan_shutoff, #air_loop_hvac_energy_recovery?, #air_loop_hvac_energy_recovery_ventilator_flow_limit, #air_loop_hvac_energy_recovery_ventilator_heat_exchanger_type, #air_loop_hvac_energy_recovery_ventilator_required?, #air_loop_hvac_energy_recovery_ventilator_type, #air_loop_hvac_fan_power_limitation_pressure_drop_adjustment_brake_horsepower, #air_loop_hvac_find_design_supply_air_flow_rate, #air_loop_hvac_floor_area_served, #air_loop_hvac_floor_area_served_exterior_zones, #air_loop_hvac_floor_area_served_interior_zones, #air_loop_hvac_get_occupancy_schedule, #air_loop_hvac_humidifier_count, #air_loop_hvac_include_hydronic_cooling_coil?, #air_loop_hvac_include_wshp?, #air_loop_hvac_integrated_economizer_required?, #air_loop_hvac_motorized_oa_damper_limits, #air_loop_hvac_motorized_oa_damper_required?, #air_loop_hvac_multi_stage_dx_cooling?, #air_loop_hvac_multizone_vav_optimization_required?, #air_loop_hvac_multizone_vav_system?, #air_loop_hvac_optimum_start_required?, #air_loop_hvac_prm_baseline_economizer_required?, #air_loop_hvac_prm_economizer_type_and_limits, #air_loop_hvac_remove_motorized_oa_damper, #air_loop_hvac_residential_area_served, #air_loop_hvac_set_minimum_damper_position, #air_loop_hvac_single_zone_controls_num_stages, #air_loop_hvac_supply_air_temperature_reset_required?, #air_loop_hvac_supply_return_exhaust_relief_fans, #air_loop_hvac_system_fan_brake_horsepower, #air_loop_hvac_system_multiplier, #air_loop_hvac_terminal_reheat?, #air_loop_hvac_total_cooling_capacity, #air_loop_hvac_unitary_system?, #air_loop_hvac_unoccupied_fan_shutoff_required?, #air_loop_hvac_unoccupied_threshold, #air_loop_hvac_vav_system?, #air_terminal_single_duct_parallel_piu_reheat_apply_prm_baseline_fan_power, #air_terminal_single_duct_vav_reheat_apply_initial_prototype_damper_position, #air_terminal_single_duct_vav_reheat_apply_minimum_damper_position, #air_terminal_single_duct_vav_reheat_minimum_damper_position, #air_terminal_single_duct_vav_reheat_reheat_type, #air_terminal_single_duct_vav_reheat_set_heating_cap, #apply_changes_to_surface_construction, #apply_lighting_schedule, #apply_limit_to_subsurface_ratio, #apply_max_fdwr, #apply_max_srr, #boiler_hot_water_apply_efficiency_and_curves, #boiler_hot_water_find_capacity, #boiler_hot_water_find_search_criteria, #boiler_hot_water_standard_minimum_thermal_efficiency, build, #building_story_floor_multiplier, #building_story_minimum_z_value, #change_construction_properties_in_model, #chiller_electric_eir_apply_efficiency_and_curves, #chiller_electric_eir_find_capacity, #chiller_electric_eir_find_search_criteria, #chiller_electric_eir_standard_minimum_full_load_efficiency, #coil_cooling_dx_multi_speed_apply_efficiency_and_curves, #coil_cooling_dx_single_speed_apply_efficiency_and_curves, #coil_cooling_dx_single_speed_find_capacity, #coil_cooling_dx_single_speed_standard_minimum_cop, #coil_cooling_dx_two_speed_apply_efficiency_and_curves, #coil_cooling_dx_two_speed_find_capacity, #coil_cooling_dx_two_speed_standard_minimum_cop, #coil_cooling_water_to_air_heat_pump_apply_efficiency_and_curves, #coil_cooling_water_to_air_heat_pump_find_capacity, #coil_cooling_water_to_air_heat_pump_standard_minimum_cop, #coil_heating_dx_multi_speed_apply_efficiency_and_curves, #coil_heating_dx_single_speed_apply_defrost_eir_curve_limits, #coil_heating_dx_single_speed_apply_efficiency_and_curves, #coil_heating_dx_single_speed_find_capacity, #coil_heating_dx_single_speed_standard_minimum_cop, #coil_heating_gas_apply_efficiency_and_curves, #coil_heating_gas_apply_prototype_efficiency, #coil_heating_gas_multi_stage_apply_efficiency_and_curves, #coil_heating_water_to_air_heat_pump_apply_efficiency_and_curves, #coil_heating_water_to_air_heat_pump_find_capacity, #coil_heating_water_to_air_heat_pump_standard_minimum_cop, #combustion_eff_to_thermal_eff, #construction_calculated_solar_heat_gain_coefficient, #construction_calculated_u_factor, #construction_calculated_visible_transmittance, #construction_deep_copy, #construction_set_glazing_shgc, #construction_set_glazing_tvis, #construction_set_glazing_u_value, #construction_set_slab_f_factor, #construction_set_u_value, #construction_set_underground_wall_c_factor, #construction_simple_glazing?, #controller_water_coil_set_convergence_limits, #convert_curve_biquadratic, #cooling_tower_single_speed_apply_efficiency_and_curves, #cooling_tower_two_speed_apply_efficiency_and_curves, #cooling_tower_variable_speed_apply_efficiency_and_curves, #cop_heating_to_cop_heating_no_fan, #cop_to_eer, #cop_to_kw_per_ton, #cop_to_seer, #create_air_conditioner_variable_refrigerant_flow, #create_boiler_hot_water, #create_central_air_source_heat_pump, #create_coil_cooling_dx_single_speed, #create_coil_cooling_dx_two_speed, #create_coil_cooling_water, #create_coil_cooling_water_to_air_heat_pump_equation_fit, #create_coil_heating_dx_single_speed, #create_coil_heating_electric, #create_coil_heating_gas, #create_coil_heating_water, #create_coil_heating_water_to_air_heat_pump_equation_fit, #create_curve_bicubic, #create_curve_biquadratic, #create_curve_cubic, #create_curve_exponent, #create_curve_quadratic, #create_fan_constant_volume, #create_fan_constant_volume_from_json, #create_fan_on_off, #create_fan_on_off_from_json, #create_fan_variable_volume, #create_fan_variable_volume_from_json, #create_fan_zone_exhaust, #create_fan_zone_exhaust_from_json, #day_schedule_equivalent_full_load_hrs, #define_space_multiplier, #eer_to_cop, #fan_constant_volume_airloop_fan_pressure_rise, #fan_constant_volume_apply_prototype_fan_pressure_rise, #fan_on_off_airloop_or_unitary_fan_pressure_rise, #fan_on_off_apply_prototype_fan_pressure_rise, #fan_variable_volume_airloop_fan_pressure_rise, #fan_variable_volume_apply_prototype_fan_pressure_rise, #fan_variable_volume_cooling_system_type, #fan_variable_volume_part_load_fan_power_limitation?, #fan_variable_volume_part_load_fan_power_limitation_capacity_limit, #fan_variable_volume_part_load_fan_power_limitation_hp_limit, #fan_variable_volume_set_control_type, #fan_zone_exhaust_apply_prototype_fan_pressure_rise, #film_coefficients_r_value, #find_and_set_insulation_layer, #find_exposed_conditioned_roof_surfaces, #find_exposed_conditioned_vertical_surfaces, #find_highest_roof_centre, #fluid_cooler_apply_minimum_power_per_flow, #get_outdoor_subsurface_ratio, #headered_pumps_variable_speed_set_control_type, #heat_exchanger_air_to_air_sensible_and_latent_apply_efficiency, #heat_exchanger_air_to_air_sensible_and_latent_apply_prototype_efficiency, #heat_exchanger_air_to_air_sensible_and_latent_apply_prototype_nominal_electric_power, #heat_exchanger_air_to_air_sensible_and_latent_minimum_efficiency, #heat_exchanger_air_to_air_sensible_and_latent_prototype_default_fan_efficiency, #heating_design_outdoor_temperatures, #hspf_to_cop_heating_no_fan, #hspf_to_cop_heating_with_fan, #intialize, #kw_per_ton_to_cop, #load_hvac_map, #load_initial_osm, #model_add_baseboard, #model_add_booster_swh_end_uses, #model_add_cav, #model_add_central_air_source_heat_pump, #model_add_chw_loop, #model_add_constant_schedule_ruleset, #model_add_construction, #model_add_construction_set, #model_add_crac, #model_add_crah, #model_add_curve, #model_add_cw_loop, #model_add_data_center_hvac, #model_add_data_center_load, #model_add_daylighting_controls, #model_add_design_days_and_weather_file, #model_add_district_ambient_loop, #model_add_doas, #model_add_doas_cold_supply, #model_add_elevators, #model_add_evap_cooler, #model_add_exhaust_fan, #model_add_four_pipe_fan_coil, #model_add_furnace_central_ac, #model_add_ground_hx_loop, #model_add_ground_temperatures, #model_add_heatpump_water_heater, #model_add_high_temp_radiant, #model_add_hp_loop, #model_add_hvac, #model_add_hvac_system, #model_add_hw_loop, #model_add_ideal_air_loads, #model_add_low_temp_radiant, #model_add_material, #model_add_minisplit_hp, #model_add_piping_losses_to_swh_system, #model_add_prm_baseline_system, #model_add_psz_ac, #model_add_psz_vav, #model_add_ptac, #model_add_pthp, #model_add_pvav, #model_add_pvav_pfp_boxes, #model_add_radiant_proportional_controls, #model_add_refrigeration_case, #model_add_refrigeration_compressor, #model_add_refrigeration_system, #model_add_refrigeration_walkin, #model_add_schedule, #model_add_schedule_type_limits, #model_add_split_ac, #model_add_swh, #model_add_swh_booster, #model_add_swh_end_uses, #model_add_swh_end_uses_by_space, #model_add_swh_end_uses_by_spaceonly, #model_add_swh_loop, #model_add_typical_exterior_lights, #model_add_typical_refrigeration, #model_add_typical_swh, #model_add_unitheater, #model_add_vav_pfp_boxes, #model_add_vav_reheat, #model_add_vrf, #model_add_water_heater, #model_add_water_source_hp, #model_add_waterside_economizer, #model_add_window_ac, #model_add_zone_erv, #model_add_zone_ventilation, #model_apply_hvac_efficiency_standard, #model_apply_infiltration_standard, #model_apply_multizone_vav_outdoor_air_sizing, #model_apply_parametric_schedules, #model_apply_prm_baseline_skylight_to_roof_ratio, #model_apply_prm_baseline_window_to_wall_ratio, #model_apply_prm_construction_types, #model_apply_prm_sizing_parameters, #model_apply_standard_constructions, #model_assign_spaces_to_stories, #model_attach_water_fixtures_to_spaces?, #model_baseline_system_vav_fan_type, #model_create_exterior_lighting_area_length_count_hash, #model_create_prm_baseline_building, #model_create_prm_baseline_building_requires_vlt_sizing_run, #model_create_space_type_hash, #model_create_story_hash, #model_cw_loop_cooling_tower_fan_type, #model_differentiate_primary_secondary_thermal_zones, #model_effective_num_stories, #model_elevator_fan_pwr, #model_elevator_lighting_pct_incandescent, #model_eliminate_outlier_zones, #model_find_and_add_construction, #model_find_ashrae_hot_water_demand, #model_find_climate_zone_set, #model_find_constructions, #model_find_icc_iecc_2015_hot_water_demand, #model_find_icc_iecc_2015_internal_loads, #model_find_object, #model_find_objects, #model_find_prototype_floor_area, #model_find_target_eui, #model_find_target_eui_by_end_use, #model_find_water_heater_capacity_volume_and_parasitic, #model_get_baseline_system_type_by_zone, #model_get_building_climate_zone_and_building_type, #model_get_construction_properties, #model_get_full_weather_file_path, #model_get_lookup_name, #model_get_or_add_ambient_water_loop, #model_get_or_add_chilled_water_loop, #model_get_or_add_ground_hx_loop, #model_get_or_add_heat_pump_loop, #model_get_or_add_hot_water_loop, #model_get_story_for_nominal_z_coordinate, #model_group_zones_by_story, #model_infer_hours_of_operation_building, #model_legacy_results_by_end_use_and_fuel_type, #model_make_name, #model_num_stories_spanned, #model_prm_baseline_system_change_fuel_type, #model_prm_baseline_system_group_minimum_area, #model_prm_baseline_system_groups, #model_prm_baseline_system_number, #model_prm_baseline_system_type, #model_prm_skylight_to_roof_ratio_limit, #model_process_results_for_datapoint, #model_remap_office, #model_remove_external_shading_devices, #model_remove_prm_ems_objects, #model_remove_prm_hvac, #model_remove_unused_resource_objects, #model_residential_and_nonresidential_floor_areas, #model_set_climate_zone, #model_setup_parametric_schedules, #model_standards_climate_zone, #model_system_outdoor_air_sizing_vrp_method, #model_typical_display_case_zone, #model_typical_hvac_system_type, #model_typical_walkin_zone, #model_validate_standards_spacetypes_in_model, #model_zones_with_occ_and_fuel_type, #planar_surface_apply_standard_construction, #plant_loop_apply_prm_baseline_chilled_water_pumping_type, #plant_loop_apply_prm_baseline_chilled_water_temperatures, #plant_loop_apply_prm_baseline_condenser_water_pumping_type, #plant_loop_apply_prm_baseline_condenser_water_temperatures, #plant_loop_apply_prm_baseline_hot_water_pumping_type, #plant_loop_apply_prm_baseline_hot_water_temperatures, #plant_loop_apply_prm_baseline_pump_power, #plant_loop_apply_prm_baseline_pumping_type, #plant_loop_apply_prm_baseline_temperatures, #plant_loop_apply_prm_number_of_boilers, #plant_loop_apply_prm_number_of_chillers, #plant_loop_apply_prm_number_of_cooling_towers, #plant_loop_apply_standard_controls, #plant_loop_capacity_W_by_maxflow_and_deltaT_forwater, #plant_loop_enable_supply_water_temperature_reset, #plant_loop_find_maximum_loop_flow_rate, #plant_loop_prm_baseline_condenser_water_temperatures, #plant_loop_swh_loop?, #plant_loop_swh_system_type, #plant_loop_total_cooling_capacity, #plant_loop_total_floor_area_served, #plant_loop_total_heating_capacity, #plant_loop_total_rated_w_per_gpm, #plant_loop_variable_flow_system?, #pump_variable_speed_set_control_type, register_standard, #remove_All_Subsurfaces, #remove_HVAC, #remove_air_loops, #remove_all_HVAC, #remove_all_plant_loops, #remove_all_zone_equipment, #remove_plant_loops, #remove_unused_curves, #remove_vrf, #remove_zone_equipment, #rename_air_loop_nodes, #rename_plant_loop_nodes, #safe_load_model, #safe_load_sql, #schedule_apply_parametric_inputs, #schedule_compact_annual_min_max_value, #schedule_constant_annual_equivalent_full_load_hrs, #schedule_constant_annual_min_max_value, #schedule_ruleset_annual_equivalent_full_load_hrs, #schedule_ruleset_annual_hourly_values, #schedule_ruleset_annual_hours_above_value, #schedule_ruleset_annual_min_max_value, #schedule_ruleset_cleanup_profiles, #schedule_ruleset_set_hours_of_operation, #seer_to_cop_cooling_no_fan, #seer_to_cop_cooling_with_fan, #set_VAV_terminals_to_control_for_outdoor_air, #set_Window_To_Wall_Ratio_set_name, #space_add_daylighting_controls, #space_apply_infiltration_rate, #space_conditioning_category, #space_cooled?, #space_daylighted_area_window_width, #space_daylighted_areas, #space_daylighting_control_required?, #space_daylighting_fractions_and_windows, #space_design_internal_load, #space_exterior_wall_and_roof_and_subsurface_area, #space_exterior_wall_and_window_area, #space_get_adjacent_space_with_most_shared_wall_area, #space_get_adjacent_spaces_with_shared_wall_areas, #space_heated?, #space_hours_of_operation, #space_plenum?, #space_residential?, #space_sidelighting_effective_aperture, #space_skylight_effective_aperture, #space_type_apply_internal_load_schedules, #space_type_apply_internal_loads, #space_type_apply_rendering_color, #space_type_get_construction_properties, #space_type_get_standards_data, #spaces_get_occupancy_schedule, #spaces_hours_of_operation, #standard_design_sizing_temperatures, #standards_lookup_table_first, #standards_lookup_table_many, #strip_model, #sub_surface_component_infiltration_rate, #sub_surface_create_centered_subsurface_from_scaled_surface, #sub_surface_create_scaled_subsurfaces_from_surface, #sub_surface_reduce_area_by_percent_by_raising_sill, #sub_surface_reduce_area_by_percent_by_shrinking_toward_centroid, #sub_surface_vertical_rectangle?, #surface_component_infiltration_rate, #surface_replace_existing_subsurfaces_with_centered_subsurface, #thermal_eff_to_afue, #thermal_eff_to_comb_eff, #thermal_zone_add_exhaust, #thermal_zone_add_exhaust_fan_dcv, #thermal_zone_add_unconditioned_thermostat, #thermal_zone_apply_prm_baseline_supply_temperatures, #thermal_zone_building_type, #thermal_zone_conditioning_category, #thermal_zone_convert_oa_req_to_per_area, #thermal_zone_cooled?, #thermal_zone_demand_control_ventilation_limits, #thermal_zone_demand_control_ventilation_required?, #thermal_zone_design_internal_load, #thermal_zone_exhaust_fan_dcv_required?, #thermal_zone_floor_area_with_zone_multipliers, #thermal_zone_fossil_hybrid_or_purchased_heat?, #thermal_zone_fossil_or_electric_type, #thermal_zone_get_adjacent_zones_with_shared_wall_areas, #thermal_zone_get_occupancy_schedule, #thermal_zone_heated?, #thermal_zone_infer_system_type, #thermal_zone_majority_space_type, #thermal_zone_mixed_heating_fuel?, #thermal_zone_occupancy_type, #thermal_zone_outdoor_airflow_rate, #thermal_zone_outdoor_airflow_rate_per_area, #thermal_zone_plenum?, #thermal_zone_prm_baseline_cooling_design_supply_temperature, #thermal_zone_prm_baseline_heating_design_supply_temperature, #thermal_zone_residential?, #thermal_zone_vestibule?, #thermal_zones_get_occupancy_schedule, #true?, #validate_initial_model, #water_heater_mixed_apply_efficiency, #water_heater_mixed_apply_prm_baseline_fuel_type, #water_heater_mixed_find_capacity, #zone_hvac_component_apply_prm_baseline_fan_power, #zone_hvac_component_apply_standard_controls, #zone_hvac_component_apply_vestibule_heating_control, #zone_hvac_component_prm_baseline_fan_efficacy, #zone_hvac_component_vestibule_heating_control_required?

Methods included from PrototypeFan

apply_base_fan_variables, #create_fan_by_name, #get_fan_from_standards, #prototype_fan_apply_prototype_fan_efficiency

Methods included from CoilDX

#coil_dx_find_search_criteria, #coil_dx_heat_pump?, #coil_dx_heating_type, #coil_dx_subcategory

Methods included from CoolingTower

#cooling_tower_apply_minimum_power_per_flow, #cooling_tower_apply_minimum_power_per_flow_gpm_limit

Methods included from Pump

#pump_apply_prm_pressure_rise_and_motor_efficiency, #pump_apply_standard_minimum_motor_efficiency, #pump_brake_horsepower, #pump_motor_horsepower, #pump_pumppower, #pump_rated_w_per_gpm, #pump_standard_minimum_motor_efficiency_and_size

Methods included from Fan

#fan_adjust_pressure_rise_to_meet_fan_power, #fan_apply_standard_minimum_motor_efficiency, #fan_baseline_impeller_efficiency, #fan_brake_horsepower, #fan_change_impeller_efficiency, #fan_change_motor_efficiency, #fan_fanpower, #fan_motor_horsepower, #fan_rated_w_per_cfm, #fan_small_fan?, #fan_standard_minimum_motor_efficiency_and_size

Constructor Details

#initialize ⇒ CBES

Returns a new instance of CBES.



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# File 'lib/openstudio-standards/standards/cbes/cbes.rb', line 7

def initialize
  load_standards_database
end

Instance Method Details

#air_loop_hvac_apply_multizone_vav_outdoor_air_sizing(air_loop_hvac) ⇒ Bool

TODO:

enable damper position adjustment for legacy IDFS

Apply multizone vav outdoor air method and adjust multizone VAV damper positions. Does nothing for CBES.

Returns:

  • (Bool) —

    returns true if successful, false if not



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# File 'lib/openstudio-standards/standards/cbes/cbes.AirLoopHVAC.rb', line 9

def air_loop_hvac_apply_multizone_vav_outdoor_air_sizing(air_loop_hvac)
  # Do nothing
  return true
end

#air_loop_hvac_apply_single_zone_controls(air_loop_hvac, climate_zone) ⇒ Bool

Add code required single zone controls. No controls required by CBES.

Returns:

  • (Bool) —

    returns true if successful, false if not



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# File 'lib/openstudio-standards/standards/cbes/cbes.AirLoopHVAC.rb', line 47

def air_loop_hvac_apply_single_zone_controls(air_loop_hvac, climate_zone)
  # Do nothing
  return true
end

#air_loop_hvac_demand_control_ventilation_required?(air_loop_hvac, climate_zone) ⇒ Bool

Determine if demand control ventilation (DCV) is required for this air loop. Not required for CBES.

Returns:

  • (Bool) —

    Returns true if required, false if not.



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# File 'lib/openstudio-standards/standards/cbes/cbes.AirLoopHVAC.rb', line 39

def air_loop_hvac_demand_control_ventilation_required?(air_loop_hvac, climate_zone)
  dcv_required = false
  return dcv_required
end

#air_loop_hvac_static_pressure_reset_required?(air_loop_hvac, has_ddc) ⇒ Boolean

Determine if static pressure reset is required for this system. Not required by CBES.

over VAV terminals. return [Bool] returns true if static pressure reset is required, false if not

Parameters:

  • has_ddc (Bool) —

    whether or not the system has DDC control

Returns:

  • (Boolean) 


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# File 'lib/openstudio-standards/standards/cbes/cbes.AirLoopHVAC.rb', line 20

def air_loop_hvac_static_pressure_reset_required?(air_loop_hvac, has_ddc)
  sp_reset_required = false
  return sp_reset_required
end

#air_loop_hvac_vav_damper_action(air_loop_hvac) ⇒ String

Determine whether the VAV damper control is single maximum or dual maximum control. Single Maximum for CBES.

Returns:

  • (String) —

    the damper control type: Single Maximum, Dual Maximum



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# File 'lib/openstudio-standards/standards/cbes/cbes.AirLoopHVAC.rb', line 29

def air_loop_hvac_vav_damper_action(air_loop_hvac)
  damper_action = 'Single Maximum'
  return damper_action
end

#load_standards_database(data_directories = []) ⇒ Object 



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# File 'lib/openstudio-standards/standards/cbes/cbes.rb', line 11

def load_standards_database(data_directories = [])
  super([__dir__] + data_directories)
end

#model_add_elevator(model, space, number_of_elevators, elevator_type, elevator_schedule, elevator_fan_schedule, elevator_lights_schedule, building_type = nil) ⇒ OpenStudio::Model::ElectricEquipment

TODO:

Inconsistency. Older vintages don’t have lights or fans

Add an elevator the the specified space

to assign the elevators to. Traction, Hydraulic in elevators, which is not realistic.

Parameters:

  • space (OpenStudio::Model::Space) —

    the space

  • number_of_elevators (Integer) —

    the number of elevators

  • elevator_type (String) —

    valid choices are

  • elevator_schedule (String) —

    the name of the elevator schedule

  • elevator_fan_schedule (String) —

    the name of the elevator fan schedule

  • elevator_lights_schedule (String) —

    the name of the elevator lights schedule

  • building_type (String) (defaults to: nil) —

    the building type

Returns:

  • (OpenStudio::Model::ElectricEquipment) —

    the resulting elevator



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# File 'lib/openstudio-standards/prototypes/cbes/cbes.Model.elevators.rb', line 18

def model_add_elevator(model,
                       space,
                       number_of_elevators,
                       elevator_type,
                       elevator_schedule,
                       elevator_fan_schedule,
                       elevator_lights_schedule,
                       building_type = nil)

  # Lift motor assumptions
  lift_pwr_w = model_elevator_lift_power(model, elevator_type, building_type)

  # Size assumptions
  length_ft = 6.66
  width_ft = 4.25
  height_ft = 8.0
  area_ft2 = length_ft * width_ft
  volume_ft3 = area_ft2 * height_ft

  # Ventilation assumptions
  vent_rate_acm = 1 # air changes per minute
  vent_rate_cfm = volume_ft3 / vent_rate_acm
  vent_pwr_w = model_elevator_fan_pwr(model, vent_rate_cfm)

  # Heating fraction radiant assumptions
  elec_equip_frac_radiant = 0.5

  # Lighting assumptions
  design_ltg_lm_per_ft2 = 30
  light_loss_factor = 0.75
  pct_incandescent = model_elevator_lighting_pct_incandescent(model)
  pct_led = 1.0 - pct_incandescent

  incandescent_efficacy_lm_per_w = 10.0
  led_efficacy_lm_per_w = 35.0
  target_ltg_lm_per_ft2 = design_ltg_lm_per_ft2 / light_loss_factor # 40
  target_ltg_lm = target_ltg_lm_per_ft2 * area_ft2 # 1132.2
  lm_incandescent = target_ltg_lm * pct_incandescent # 792.54
  lm_led = target_ltg_lm * pct_led # 339.66
  w_incandescent = lm_incandescent / incandescent_efficacy_lm_per_w # 79.254
  w_led = lm_led / led_efficacy_lm_per_w # 9.7
  lighting_pwr_w = w_incandescent + w_led

  # Elevator lift motor
  elevator_definition = OpenStudio::Model::ElectricEquipmentDefinition.new(model)
  elevator_definition.setName('Elevator Lift Motor')
  elevator_definition.setDesignLevel(lift_pwr_w)
  elevator_definition.setFractionRadiant(elec_equip_frac_radiant)

  elevator_equipment = OpenStudio::Model::ElectricEquipment.new(elevator_definition)
  elevator_equipment.setName("#{number_of_elevators.round} Elevator Lift Motors")
  elevator_equipment.setEndUseSubcategory('Elevators')
  elevator_sch = model_add_schedule(model, elevator_schedule)
  elevator_equipment.setSchedule(elevator_sch)
  elevator_equipment.setSpace(space)
  elevator_equipment.setMultiplier(number_of_elevators)

  return elevator_equipment
end

#model_elevator_lift_power(model, elevator_type, building_type) ⇒ Object

Determines the power required by an individual elevator of a given type. Values used by the older vintages are slightly higher than those used by the DOE prototypes. Traction, Hydraulic

Parameters:

  • elevator_type (String) —

    valid choices are



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# File 'lib/openstudio-standards/prototypes/cbes/cbes.Model.elevators.rb', line 83

def model_elevator_lift_power(model, elevator_type, building_type)
  lift_pwr_w = 0
  if elevator_type == 'Traction'
    lift_pwr_w = 18_537.0
  elsif elevator_type == 'Hydraulic'
    lift_pwr_w = if building_type == 'MidriseApartment'
                   16_055.0
                 else
                   14_610.0
                 end
  else
    lift_pwr_w = 14_610.0
    OpenStudio.logFree(OpenStudio::Warn, 'openstudio.model.Model', "Elevator type '#{elevator_type}', not recognized, will assume Hydraulic elevator, #{lift_pwr_w} W.")
  end

  return lift_pwr_w
end

#model_get_climate_zone_set_from_list(model, possible_climate_zone_sets) ⇒ Object

Determine which climate zone to use. Uses the most specific climate zone set.



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# File 'lib/openstudio-standards/standards/cbes/cbes.Model.rb', line 6

def model_get_climate_zone_set_from_list(model, possible_climate_zone_sets)
  climate_zone_set = possible_climate_zone_sets.sort.last
  return climate_zone_set
end

#model_ventilation_method(model) ⇒ String

Determines how ventilation for the standard is specified. When ‘Sum’, all min OA flow rates are added up. Commonly used by 90.1. When ‘Maximum’, only the biggest OA flow rate. Used by T24.

Parameters:

Returns:

  • (String) —

    the ventilation method, either Sum or Maximum



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# File 'lib/openstudio-standards/standards/cbes/cbes.Model.rb', line 17

def model_ventilation_method(model)
  ventilation_method = 'Maximum'
  return ventilation_method
end

#model_walkin_freezer_latent_case_credit_curve(model) ⇒ Object

TODO:

Should probably use the model_add_refrigeration_walkin

Determine the latent case credit curve to use for walkins. and lookups from the spreadsheet instead of hard-coded values.



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# File 'lib/openstudio-standards/prototypes/cbes/cbes.refrigeration.rb', line 8

def model_walkin_freezer_latent_case_credit_curve(model)
  latent_case_credit_curve_name = 'Single Shelf Horizontal Latent Energy Multiplier_Pre2004'
  return latent_case_credit_curve_name
end

#plant_loop_supply_water_temperature_reset_required?(plant_loop) ⇒ Boolean

Determine if temperature reset is required. Not required for CBES.

Returns:

  • (Boolean) 


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# File 'lib/openstudio-standards/standards/cbes/cbes.PlantLoop.rb', line 6

def plant_loop_supply_water_temperature_reset_required?(plant_loop)
  reset_required = false
  return reset_required
end

#space_infiltration_rate_75_pa(space) ⇒ Double

Determine the base infiltration rate at 75 PA.

defaults to no infiltration.

Returns:

  • (Double) —

    the baseline infiltration rate, in cfm/ft^2



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# File 'lib/openstudio-standards/standards/cbes/cbes.Space.rb', line 8

def space_infiltration_rate_75_pa(space)
  basic_infil_rate_cfm_per_ft2 = 1.8
  return basic_infil_rate_cfm_per_ft2
end