phoenix convention center phoenix, arizona building performance using doe’s energy modeling tools...
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Phoenix Convention Center • Phoenix, Arizona
Building Performance Using DOE’s Energy Modeling Tools For Retrofit Planning
Using DOE’s Energy Modeling Ecosystem for Retrofit AnalysisAndrew Parker
Commercial Buildings Controls and Analysis Tools TeamAugust 13, 2015
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Energy Exchange: Federal Sustainability for the Next Decade
Why Energy Modeling?
• Standardized calculation methods• Assumptions documented• Captures interactions between ECMs• All parts of building (lights, HVAC, envelope, etc.)• All in one place
A custom calculator for your building!
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Energy Exchange: Federal Sustainability for the Next Decade
Uses for an Energy Model
• Evaluate ECMs• Verify/challenge vendor claims• ESPC due diligence• Analysis for appropriated funds
• Standardized nature makes review easier• Compare against bills – find issues
Remember: it is a tool to help you!
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Energy Exchange: Federal Sustainability for the Next Decade
Where to get an Energy Model
• If LEED, one should exist already• Investment grade energy audit• Make one! – many free software tools
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Energy Exchange: Federal Sustainability for the Next Decade
DOE Energy Modeling Ecosystem
OpenStudio is an open source platform that bridges the gap between capable but complex engines and the easy-to-use applications that drive energy savings.
Simulation Engines
“Operating System”
Applications
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Energy Exchange: Federal Sustainability for the Next Decade
Data for the Ecosystem
The Technology Performance Exchange (TPEx) and Building Component Library (BCL) provide the raw data that powers the ecosystem.
Utility Pilots
Manufacturer Data
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Energy Exchange: Federal Sustainability for the Next Decade7
The Technology Performance Exchange
• Web-based repository of product-specific performance data• Engineering analysis → minimum parameters for robust analysis• Data provenance tracked: Who, How, and When• Automatically creates and stores OpenStudio components in the
Building Component Library
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Energy Exchange: Federal Sustainability for the Next Decade
The Building Component Library
• An Internet-connected source of building energy modeling data:• Enables drag-and-drop modeling for quick technology evaluation• Provides consistent, detailed inputs to drive decision-making• Searchable readily available within applications• The BCL is key to OpenStudio’s extensibility
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Energy Exchange: Federal Sustainability for the Next Decade
The BCL: A Source for Reusable Input Data
Components:•Assembled to form complete energy models
• Include constructions, lights, schedules, weather data, PV components, and more
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Energy Exchange: Federal Sustainability for the Next Decade
The BCL: Fast and Reliable Measure Application
Measures:•Contain logic needed to
transform an energy model easily and consistently
•Can be applied singly or as part of a parametric analysis
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Energy Exchange: Federal Sustainability for the Next Decade
Knowledge is passed one-to-one: Inconsistent, not scalable, not transparent
Watch closely.
Modeling Today
Simulation Program
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Energy Exchange: Federal Sustainability for the Next Decade
A better way to share modeling techniques.
Help!
What We’ve Needed
Simulation Program
?
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Energy Exchange: Federal Sustainability for the Next Decade
OpenStudio Measure:
Do something to model
OpenStudio Measures are small scripts that transform building models quickly and easily
Model(Before)
It Exists! – OpenStudio Measures
Model(After)
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Energy Exchange: Federal Sustainability for the Next Decade
DaylightingMeasure
Example OpenStudio Measures
Night Setback Measure
Add Heat RecoveryMeasure
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Energy Exchange: Federal Sustainability for the Next Decade
Measures Workflow Example
BaselineModel
Online Database of Measures
OpenStudio Parametric Analysis
Tool (PAT)
Life cycle analysis identifies cost-effective measures
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Energy Exchange: Federal Sustainability for the Next Decade
Vision – Energy Model as FM Tool
• Design• Include efficiency in building requirements• Use model to “prove out” design• Lastly - submit for LEED
• Continuous Commissioning• Compare model to actual – find issues
• Compliance• Quickly evaluate ECMs ID’d during Audits
• Living asset• Update as building changes
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Energy Exchange: Federal Sustainability for the Next Decade
Questions?