def program_type_by_name(program_type_name):
"""Get a program_type from the library given its name.
Args:
program_type_name: A text string for the name of the ProgramType.
"""
try: # see if the program type has already been loaded to a Python object
return _program_types[program_type_name]
except KeyError: # program type likely needs to be loaded from standards data
try:
_prog_dict = _program_type_standards_dict[program_type_name]
except KeyError: # program type is nowhere to be found; raise an error
raise ValueError('"{}" was not found in the program type library.'.format(
program_type_name))
# create the Python object from the standards gem dictionary
_prog_obj = ProgramType.from_standards_dict(_prog_dict)
_prog_obj.lock()
_program_types[program_type_name] = _prog_obj # load faster next time
return _prog_obj
def test_program_type_from_standards_dict():
"""Test the from_standards_dict methods."""
program_dict = {
"template": "90.1-2013",
"building_type": "Office",
"space_type": "MediumOffice - OpenOffice",
"lighting_standard": "ASHRAE 90.1-2013",
"lighting_per_area": 0.98,
"lighting_per_person": None,
"additional_lighting_per_area": None,
"lighting_fraction_to_return_air": 0.0,
"lighting_fraction_radiant": 0.7,
"lighting_fraction_visible": 0.2,
"lighting_schedule": "OfficeMedium BLDG_LIGHT_SCH_2013",
"ventilation_standard": "ASHRAE 62.1-2007",
"ventilation_primary_space_type": "Office Buildings",
"ventilation_secondary_space_type": "Office space",
"ventilation_per_area": 0.06,
"ventilation_per_person": 5.0,
"ventilation_air_changes": None,
"minimum_total_air_changes": None,
"occupancy_per_area": 5.25,
"occupancy_schedule": "OfficeMedium BLDG_OCC_SCH",
"occupancy_activity_schedule": "OfficeMedium ACTIVITY_SCH",
"infiltration_per_exterior_area": 0.0446,
"infiltration_schedule": "OfficeMedium INFIL_SCH_PNNL",
"gas_equipment_per_area": None,
"gas_equipment_fraction_latent": None,
"gas_equipment_fraction_radiant": None,
"gas_equipment_fraction_lost": None,
"gas_equipment_schedule": None,
"electric_equipment_per_area": 0.96,
"electric_equipment_fraction_latent": 0.0,
"electric_equipment_fraction_radiant": 0.5,
"electric_equipment_fraction_lost": 0.0,
"electric_equipment_schedule": "OfficeMedium BLDG_EQUIP_SCH_2013",
"heating_setpoint_schedule": "OfficeMedium HTGSETP_SCH_YES_OPTIMUM",
"cooling_setpoint_schedule": "OfficeMedium CLGSETP_SCH_YES_OPTIMUM"
}
office_program = ProgramType.from_standards_dict(program_dict)
assert office_program.name == 'MediumOffice - OpenOffice'
assert office_program.people.people_per_area == pytest.approx(0.05651, rel=1e-3)
assert office_program.people.occupancy_schedule.name == 'OfficeMedium BLDG_OCC_SCH'
assert office_program.people.activity_schedule.name == 'OfficeMedium ACTIVITY_SCH'
assert office_program.lighting.watts_per_area == pytest.approx(10.548, rel=1e-3)
assert office_program.lighting.schedule.name == 'OfficeMedium BLDG_LIGHT_SCH_2013'
assert office_program.lighting.return_air_fraction == pytest.approx(0.0, rel=1e-3)
assert office_program.lighting.radiant_fraction == pytest.approx(0.7, rel=1e-3)
assert office_program.lighting.visible_fraction == pytest.approx(0.2, rel=1e-3)
assert office_program.electric_equipment.watts_per_area == pytest.approx(10.3333, rel=1e-3)
assert office_program.electric_equipment.schedule.name == 'OfficeMedium BLDG_EQUIP_SCH_2013'
assert office_program.electric_equipment.latent_fraction == pytest.approx(0.0, rel=1e-3)
assert office_program.electric_equipment.radiant_fraction == pytest.approx(0.5, rel=1e-3)
assert office_program.electric_equipment.lost_fraction == pytest.approx(0.0, rel=1e-3)
assert office_program.gas_equipment is None
assert office_program.infiltration.flow_per_exterior_area == pytest.approx(0.000226568, rel=1e-3)
assert office_program.infiltration.schedule.name == 'OfficeMedium INFIL_SCH_PNNL'
assert office_program.ventilation.flow_per_person == pytest.approx(0.0023597, rel=1e-3)
assert office_program.ventilation.flow_per_area == pytest.approx(0.0003048, rel=1e-3)
assert office_program.ventilation.flow_per_zone == pytest.approx(0.0, rel=1e-3)
assert office_program.ventilation.air_changes_per_hour == pytest.approx(0.0, rel=1e-3)
assert office_program.setpoint.heating_schedule.name == 'OfficeMedium HTGSETP_SCH_YES_OPTIMUM'
assert office_program.setpoint.heating_setpoint == pytest.approx(21.0, rel=1e-3)
assert office_program.setpoint.heating_setback == pytest.approx(15.6, rel=1e-3)
assert office_program.setpoint.cooling_schedule.name == 'OfficeMedium CLGSETP_SCH_YES_OPTIMUM'
assert office_program.setpoint.cooling_setpoint == pytest.approx(24.0, rel=1e-3)
assert office_program.setpoint.cooling_setback == pytest.approx(26.7, rel=1e-3)
