ENERGY ONTOLOGY FOR NET- ZERO ENERGY BUILDINGS Presented by Philip Odonkor IE 500 – ONTOLOGICAL...
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Transcript of ENERGY ONTOLOGY FOR NET- ZERO ENERGY BUILDINGS Presented by Philip Odonkor IE 500 – ONTOLOGICAL...
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ENERGY ONTOLOGY FOR NET-ZERO ENERGY BUILDINGS
Presented by Philip Odonkor
IE 500 – ONTOLOGICAL ENGINEERINGNovember 24, 2014
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IE 500
Ontological Engineering
Presentation Overview
• Introduction to Net Zero
Buildings
• Problem Statement
• Proposed Approach
• Ontology
• Conclusions
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IE 500
Ontological Engineering
The Energy Challenge
North America
S. America
Europe
Africa
Asia
Globally, buildings consume 32% of the total energy produced.
They represent a key cog in the needed transition towards energy sustainability.
Net-Zero energy building clusters offer a viable solution for energy sustainability.
Australia
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IE 500
Ontological Engineering
What are Net-Zero Energy Buildings?
Buildings which generate as much energy as they consume.
zHome Townhome Project, Seattle
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IE 500
Ontological Engineering
Objective
Develop an ontology which accurately
captures and models the energy interactions
within net zero energy buildings to enable
informed energy strategies.
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IE 500
Ontological Engineering
Ontologies of Interest
Describes the physical environment of a building.
Building Ontology
An ontology describing user information and preferences
User Preference OntologyCaptures knowledge with regards to the weather
Environment Ontology
Captures information regarding onsite energy sources, energy grid, energy.
Energy Ontology
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IE 500
Ontological Engineering
Ontologies of Interest
Describes the physical environment of a building.
Building Ontology
An ontology describing user information and preferences
User Preference OntologyCaptures knowledge with regards to the weather
Environment Ontology
Captures information regarding onsite energy sources, energy grid, energy.
Energy Ontology
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IE 500
Ontological Engineering
Existing Ontologi
es
At least 7 Ontologies of
interest
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IE 500
Ontological Engineering
Existing Ontologi
es
DogOnt Ontology Modelling for Smart Home
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IE 500
Ontological Engineering
Existing Ontologi
es
Codamos Ontology Modelling Electrical Energy
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IE 500
Ontological Engineering
Existing Ontologi
es
BONSAI Ontology Modelling for Environment
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IE 500
Ontological Engineering
NetZOntOntology modeling for Net-Zero energy buildings
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IE 500
Ontological Engineering
Scope
• Defining buildings and spaces within them
• Defining appliances which consume energy
• Linking appliances with on/off states
• Linking appliances with functionality
• Associate power consumption to appliances at different
on/off states
• Generating instances
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IE 500
Ontological Engineering
Imported Ontologies
• BFO 1.1 - Upper lever Ontology
• OBO metadata-ontology – Annotation purposes
• UCUM - The Unified Code for Units of Measure Ontology
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IE 500
Ontological Engineering
Key Classes : Building
Building
Commercial
Residential Townhouse
Detached House
Condominium
is_a
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IE 500
Ontological Engineering
Key Classes : Appliances
Appliance
Major
Small
Blender
Game Console
is_a
Fridge
Electric Stove
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IE 500
Ontological Engineering
BFO Integration
Buildings and Appliances – Independent Continuants - Material Entity - Object Building Environment – Independent Continuants - Site
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IE 500
Ontological Engineering
OBO Annotation Integration
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IE 500
Ontological Engineering
System Modeling Using Competency Questions
Building Environment Room
Kitchen
On/OffState
Discrete State
State
Desk Fan
Appliance
Small Appliance
is_in
has_state
has_functionality
What types of rooms are in the building?
……………
What types of energy consumers are in the
building?……………
What instances of energy consumers do we have?
……………
How do we know if instance is on or off?
……………
How do we know what functionality is offered by
instance?
On/OffFunctionality
Control Functionality
Functionality
Competency questions are targets for what your ontology should be able to answer, given sufficient facts (i.e. data) in your knowledgebase.
is_a
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IE 500
Ontological Engineering
Which rooms have energy consuming devices?
……………
System Queries
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IE 500
Ontological Engineering
What are these energy consuming devices?
……………
System Queries
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IE 500
Ontological Engineering
Which devices have a ‘wash’ functionality and a
power consumption of 650W?
……………
System Queries
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IE 500
Ontological Engineering
Conclusions
• NetZOnt: An ontology for modeling the energy interactions in NetZero energy buildings
• System modeling was done using Competency Questions
• Can be used to design energy conservation strategies
• Extend model to incorporate user preference and environment ontologies.
• Develop query structure to compute energy consumption at any given time.
Future Work Summary
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IE 500
Ontological Engineering
Acknowledgements
I will like to acknowledge the efforts of Barry Smith, Ron Rudnicki and Alan Ruttenberg for
their guidance in this project.
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