LBNL Example SCB VRF

LBNL Example SCB VRF#

This is a reference model provided by LBNL of a small office building using a VRF Heat Recovery System. Labels have been anonymized, and may not be interpretable.

Downloads#

Queries#

Model Components#

Parent Class	Class	Instances
Equipment	Fan	16
Equipment	Valve	14
Equipment	Coil	13
Equipment	FanPoweredTerminal	13
Equipment	Damper	3
Equipment	Filter	2
Equipment	AirHandlingUnit	1
Equipment	Compressor	1
Equipment	HeatPump	1
Equipment	HeatExchanger	1
ConnectionPoint	OutletConnectionPoint	192
ConnectionPoint	BidirectionalConnectionPoint	110
ConnectionPoint	InletConnectionPoint	96
ExternalReference	BACnetExternalReference	517
DomainSpace		13
Property	EnumerableProperty	292
Property	ActuatableProperty	275
Property	ObservableProperty	273
Property	QuantifiableProperty	262
Property	EnumeratedObservableProperty	148
Property	EnumeratedActuatableProperty	144
Property	QuantifiableActuatableProperty	131
Property	QuantifiableObservableProperty	125

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:scb-vrf")
model.graph.parse("https://models.open223.info/scb-vrf.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: 0
@prefix ns2: <http://data.ashrae.org/standard223#> .
@prefix ns4: <http://data.ashrae.org/standard223/data/scb-vrf#> .
@prefix sh: <http://www.w3.org/ns/shacl#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

[] a sh:ValidationReport ;
    sh:conforms false ;
    sh:result [ a sh:ValidationResult ;
            sh:focusNode ns4:00040 ;
            sh:resultMessage "s223: ConnectionPoint <http://data.ashrae.org/standard223/data/scb-vrf#00040> probably needs an association with a Connection, or use of hasOptionalConnectionPoint or hasBoundaryConnectionPoint qualifiers." ;
            sh:resultPath ns2:connectsThrough ;
            sh:resultSeverity sh:Info ;
            sh:sourceConstraint _:n405ac243a7a546aa956d302441ac37e5b11 ;
            sh:sourceConstraintComponent sh:SPARQLConstraintComponent ;
            sh:sourceShape <urn:well-known/f01a7d5d> ],
        [ a sh:ValidationResult ;
            sh:focusNode ns4:00041 ;
            sh:resultMessage "s223: ConnectionPoint <http: