city_retrofit/imports/construction/us_physics_parameters.py

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2020-06-09 14:07:47 -04:00
"""
UsPhysicsParameters import the construction and material information for US
SPDX - License - Identifier: LGPL - 3.0 - or -later
Copyright © 2022 Concordia CERC group
Project Coder Guille Gutierrez guillermo.gutierrezmorote@concordia.ca
Code contributors: Pilar Monsalvete Alvarez de Uribarri pilar.monsalvete@concordia.ca
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"""
import sys
from imports.construction.nrel_physics_interface import NrelPhysicsInterface
from catalog_factories.construction_catalog_factory import ConstructionCatalogFactory
from city_model_structure.building_demand.layer import Layer
from city_model_structure.building_demand.material import Material
from imports.construction.helpers.construction_helper import ConstructionHelper
class UsPhysicsParameters(NrelPhysicsInterface):
"""
UsPhysicsParameters class
"""
def __init__(self, city, base_path, divide_in_storeys=False):
self._city = city
self._path = base_path
self._divide_in_storeys = divide_in_storeys
self._climate_zone = ConstructionHelper.city_to_nrel_climate_zone(city.name)
super().__init__()
def enrich_buildings(self):
"""
Returns the city with the construction parameters assigned to the buildings
"""
city = self._city
for building in city.buildings:
try:
archetype = self._search_archetype(building.function, building.year_of_construction, self._climate_zone)
except KeyError:
sys.stderr.write(f'Building {building.name} has unknown archetype for building function: {building.function} '
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f'and building year of construction: {building.year_of_construction} '
f'and climate zone reference norm {self._climate_zone}\n')
return
# if building has no thermal zones defined from geometry, and the building will be divided in storeys,
# one thermal zone per storey is assigned
if len(building.internal_zones) == 1:
if building.internal_zones[0].thermal_zones is None:
self._create_storeys(building, archetype, self._divide_in_storeys)
if self._divide_in_storeys:
for internal_zone in building.internal_zones:
for thermal_zone in internal_zone.thermal_zones:
thermal_zone.total_floor_area = thermal_zone.footprint_area
else:
number_of_storeys = int(float(building.eave_height) / float(building.average_storey_height))
thermal_zone = building.internal_zones[0].thermal_zones[0]
thermal_zone.total_floor_area = thermal_zone.footprint_area * number_of_storeys
else:
for internal_zone in building.internal_zones:
for thermal_zone in internal_zone.thermal_zones:
thermal_zone.total_floor_area = thermal_zone.footprint_area
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for internal_zone in building.internal_zones:
self._assign_values(internal_zone.thermal_zones, archetype)
for thermal_zone in internal_zone.thermal_zones:
self._calculate_view_factors(thermal_zone)
@staticmethod
def _search_archetype(function, year_of_construction, climate_zone):
nrel_catalog = ConstructionCatalogFactory('nrel').catalog
nrel_archetypes = nrel_catalog.entries('archetypes')
for building_archetype in nrel_archetypes:
construction_period_limits = building_archetype.construction_period.split(' - ')
if construction_period_limits[1] == 'PRESENT':
construction_period_limits[1] = 3000
if int(construction_period_limits[0]) <= int(year_of_construction) < int(construction_period_limits[1]):
if (str(function) == str(building_archetype.function)) and \
(climate_zone == str(building_archetype.climate_zone)):
return building_archetype
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# Todo: line below is added by Milad as a quick fix for when archetypes search is not found
return building_archetype
# return None
@staticmethod
def _search_construction_in_archetype(archetype, construction_type):
construction_archetypes = archetype.constructions
for construction_archetype in construction_archetypes:
if str(construction_type) == str(construction_archetype.type):
return construction_archetype
return None
def _assign_values(self, thermal_zones, archetype):
for thermal_zone in thermal_zones:
thermal_zone.additional_thermal_bridge_u_value = archetype.extra_loses_due_to_thermal_bridges
thermal_zone.effective_thermal_capacity = archetype.thermal_capacity
thermal_zone.indirectly_heated_area_ratio = archetype.indirect_heated_ratio
thermal_zone.infiltration_rate_system_on = archetype.infiltration_rate_for_ventilation_system_on
thermal_zone.infiltration_rate_system_off = archetype.infiltration_rate_for_ventilation_system_off
for thermal_boundary in thermal_zone.thermal_boundaries:
construction_archetype = self._search_construction_in_archetype(archetype, thermal_boundary.type)
thermal_boundary.construction_name = construction_archetype.name
try:
thermal_boundary.window_ratio = construction_archetype.window_ratio
except ValueError:
# This is the normal operation way when the windows are defined in the geometry
continue
thermal_boundary.layers = []
for layer_archetype in construction_archetype.layers:
layer = Layer()
layer.thickness = layer_archetype.thickness
material = Material()
archetype_material = layer_archetype.material
material.name = archetype_material.name
material.id = archetype_material.id
material.no_mass = archetype_material.no_mass
if archetype_material.no_mass:
material.thermal_resistance = archetype_material.thermal_resistance
else:
material.density = archetype_material.density
material.conductivity = archetype_material.conductivity
material.specific_heat = archetype_material.specific_heat
material.solar_absorptance = archetype_material.solar_absorptance
material.thermal_absorptance = archetype_material.thermal_absorptance
material.visible_absorptance = archetype_material.visible_absorptance
layer.material = material
thermal_boundary.layers.append(layer)
# The agreement is that the layers are defined from outside to inside
external_layer = construction_archetype.layers[0]
external_surface = thermal_boundary.parent_surface
external_surface.short_wave_reflectance = 1 - float(external_layer.material.solar_absorptance)
external_surface.long_wave_emittance = 1 - float(external_layer.material.solar_absorptance)
internal_layer = construction_archetype.layers[len(construction_archetype.layers) - 1]
internal_surface = thermal_boundary.internal_surface
internal_surface.short_wave_reflectance = 1 - float(internal_layer.material.solar_absorptance)
internal_surface.long_wave_emittance = 1 - float(internal_layer.material.solar_absorptance)
for thermal_opening in thermal_boundary.thermal_openings:
if construction_archetype.window is not None:
window_archetype = construction_archetype.window
thermal_opening.construction_name = window_archetype.name
thermal_opening.frame_ratio = window_archetype.frame_ratio
thermal_opening.g_value = window_archetype.g_value
thermal_opening.overall_u_value = window_archetype.overall_u_value