city_retrofit/helpers/idf_helper.py

"""
TestOccupancyFactory test and validate the city model structure occupancy parameters
SPDX - License - Identifier: LGPL - 3.0 - or -later
Copyright © 2020 Project Author Soroush Samareh Abolhassani - soroush.samarehabolhassani@mail.concordia.ca
"""
from geomeppy import IDF
import os
import esoreader
from pathlib import Path


class IdfHelper:
  _THERMOSTAT = 'HVACTEMPLATE:THERMOSTAT'
  _IDEAL_LOAD_AIR_SYSTEM = 'HVACTEMPLATE:ZONE:IDEALLOADSAIRSYSTEM'
  _SURFACE = 'BUILDINGSURFACE:DETAILED'

  idf_surfaces = {
    'Wall': 'wall',
    'Ground': 'floor',
    'Roof': 'roof'
  }
  idf_usage = {
    'residential': 'residential_building'
  }

  def __init__(self, idf_file_path, idd_file_path, epw_file_path):
    self._idd_file_path = str(idd_file_path)
    self._idf_file_path = str(idf_file_path)
    self._epw_file_path = str(epw_file_path)
    IDF.setiddname(self._idd_file_path)
    self._idf = IDF(self._idf_file_path, self._epw_file_path)
    self._idf.epw = self._epw_file_path

  def add_heating_system(self, building):
    for usage_zone in building.usage_zones:
      thermostat_name = f'Thermostat {building.name}'
      # todo: this will fail for more than one usage zone
      static_thermostat = self._idf.newidfobject(self._THERMOSTAT,
                                                 Name=thermostat_name,
                                                 Constant_Heating_Setpoint=usage_zone.heating_setpoint,
                                                 Constant_Cooling_Setpoint=usage_zone.cooling_setpoint,
                                                 )
      for zone in self._idf.idfobjects['ZONE']:
        if zone.Name.find(building.name) != -1:
          self._idf.newidfobject(self._IDEAL_LOAD_AIR_SYSTEM,
                                 Zone_Name=zone.Name,
                                 Template_Thermostat_Name=static_thermostat.Name,)

  @staticmethod
  def _matrix_to_list(points):
    points_list = []
    for point in points:
      point_tuple = (point[0], point[1], point[2])
      points_list.append(point_tuple)
    return points_list

  @staticmethod
  def _matrix_to_2d_list(points):
    points_list = []
    for point in points:
      point_tuple = (point[0], point[1])
      points_list.append(point_tuple)
    return points_list

  def add_block(self, building):
    _points = IdfHelper._matrix_to_2d_list(building.foot_print.points)
    self._idf.add_block(name=building.name, coordinates=_points, height=building.max_height,
                        num_stories=int(building.storeys_above_ground))
    self.add_heating_system(building)
    self._idf.intersect_match()

  def add_surfaces(self, building):
    index = 0
    for zone in building.thermal_zones:
      zone_name = f'Building {building.name} usage zone {index}'
      self._idf.newidfobject('ZONE', Name=zone_name)
      for surface in zone.surfaces:
        idf_surface = self.idf_surfaces[surface.type]
        wall = self._idf.newidfobject(self._SURFACE, Name=f'{building.name}-{surface.name}', Surface_Type=idf_surface,
                                      Zone_Name=zone_name)
        coordinates = IdfHelper._matrix_to_list(surface.points)
        wall.setcoords(coordinates)
      index += 1
    self.add_heating_system(building)
    self._idf.intersect_match()

  def run(self, output_directory, window_ratio=0.35, display_render=False, output_prefix=None, keep_file=None):
    self._idf.set_default_constructions()
    self._idf.set_wwr(window_ratio, construction="Project External Window")
    self._idf.translate_to_origin()
    if display_render:
      self._idf.view_model()
# Run
    self._idf.newidfobject("OUTPUT:METER", Key_Name="Heating:DistrictHeating", Reporting_Frequency="hourly")
    self._idf.newidfobject("OUTPUT:METER", Key_Name="Cooling:DistrictCooling", Reporting_Frequency="hourly")
    idf_path = None
    if keep_file is not None:
      idf_path = (keep_file / 'in.idf').resolve()
      self._idf.saveas(str(idf_path))
    if idf_path is None:
      idf_path = (Path(__file__).parent / 'in.idf').resolve()

    # There is a bug in the IDF class, when called, it return an error, as a work around we call call energy+ directly
    run_command = f"energyplus --weather {self._epw_file_path} --output-directory {output_directory} --idd " \
                  f"{self._idd_file_path} --expandobjects --output-prefix {output_prefix} {idf_path}"
    os.system(run_command)

    if keep_file is None:
      os.remove(idf_path)
    return

  @staticmethod
  def read_eso(eso_file_path):
    dd, data = esoreader.read(eso_file_path)
    list_values = [v for v in data.values()]
    heating = [(float(x)) / 3600000.0 for x in list_values[0]]
    cooling = [(float(x)) / 3600000.0 for x in list_values[1]]
    return heating, cooling