LBNL Example Building 4 Model 1

LBNL Example Building 4 Model 1#

Example Building 4 is a real-world large-sized office building.

Example Building 4 Model 1 is provided by Lawrence Berkeley National Laboratory.

Schematic view#

lbnl-example

Contents#

This model contains a representation of the HVAC system.

Downloads#

Queries#

Description	Query URL
Zone/room temperature sensors	Query Link

Model Components#

Parent Class	Class	Instances
Equipment	Sensor	174
Equipment	Actuator	85
Equipment	Damper	43
Equipment	Valve	42
Equipment	HeatingCoil	41
Equipment	SingleDuctTerminal	40
Equipment	Filter	2
Equipment	Fan	2
Equipment	AirHandlingUnit	1
Equipment	CoolingCoil	1
Connection	Duct	132
Connection	Pipe	42
ConnectionPoint	OutletConnectionPoint	365
ConnectionPoint	InletConnectionPoint	365
DomainSpace		47
Zone		47
Property	QuantifiableObservableProperty	437
Property	QuantifiableActuatableProperty	230
Property	EnumeratedObservableProperty	53
Property	QuantifiableProperty	6
Property	EnumeratedActuatableProperty	2

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.

Note

BuildingMOTIF installation To install the buildingmotif library, you can use the following command:

pip install 'buildingmotif[topquadrant] @ git+https://github.com/NREL/buildingmotif.git@develop'

If you do not have Java installed, you can use the following command to install the library:

pip install 'buildingmotif @ git+https://github.com/NREL/buildingmotif.git@develop'

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-bdg4-1")
model.graph.parse("https://models.open223.info/lbnl-bdg4-1.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