LBNL Example Building 3 Model 1

LBNL Example Building 3 Model 1#

Example Building 3 is a real-world medium-sized office building. It is approximately 67,000 square feet in size, contains 2 floors, 27 space types, and 469 rooms. Labels have been anonymized, and are not interpretable. It uses an underfloor air distribution system with fan-powered terminal reheat coils for perimeter zones. Four roof-top units with VAV are located on the roof. The lighting system primariliy uses fluorescent luminaires and zone-based lighting controllers that communicate with user interface devices and wireless gatetways over DALI networks. The gateways collect occupancy and light sensor data over an ISM-band wireless network.

Example Building 3 Model 1 is provided by Lawrence Berkeley National Laboratory. See PNNL Example Building 3 model 2 for a different modeling approach for the same building.

Contents#

This model contains a representation of the HVAC system.

Source#

Downloads#

Queries#

Description

Query URL

Zone/room temperature sensors

Query Link

Model Components#

Load and Validate Model#

This code uses the BuildingMOTIF library to load the 223P ontology and the model file into a temporary in-memory instance. It then validates the model against the ontology. If the model is invalid, it will print the validation report.

To run this code, you need to have Java installed on your system. If you do not have Java installed, you can remove the shacl_engine='topquadrant' parameter from the BuildingMOTIF constructor. Be warned that without the shacl_engine='topquadrant' parameter, the validation process will be slower.

from buildingmotif import BuildingMOTIF
from buildingmotif.dataclasses import Library, Model
import logging

# Create a BuildingMOTIF object. If you do not have Java installed, remove the "shacl_engine" parameter
bm = BuildingMOTIF('sqlite://', shacl_engine='topquadrant', log_level=logging.ERROR)

# load 223P library. We will load a recent copy from the models.open223.info
# git repository; later, we will load this from the location of the actual standard
s223 = Library.load(ontology_graph="https://github.com/open223/models.open223.info/raw/main/ontologies/223p.ttl")

# load the model into the BuildingMOTIF instance
model = Model.create("urn:lbnl-bdg3-1")
model.graph.parse("https://models.open223.info/lbnl-bdg3-1.ttl")

# validate the model against 223P ontology
ctx = model.validate([s223.get_shape_collection()], error_on_missing_imports=False)

# print the validation result
print(f"Model is valid: {ctx.valid}")

# if the model is invalid, print the validation report
if not ctx.valid:
    print(ctx.report_string[:1000]) # first 1000 characters of the report

# BuildingMOTIF can also interpret the report to provide recommendations on fixes
for focus_node, diffs in ctx.get_reasons_with_severity("Violation").items():
    if len(diffs) == 0:
        continue
    print(focus_node)
    for diff in diffs:
        print("  - " + diff.reason())
Model is valid: True