eb5 - long - openstudio platform for analysis and standards › summits › 2012 › conference ›...
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NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, operated by the Alliance for Sustainable Energy, LLC.
OpenStudio Platform for Analysis and Standards
Nicholas Long – Commercial Buildings Controls and Analysis Tools TeamOctober 17, 2012
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Analysis Tools for Market Transformation
Web Services & Portfolio
Analysis Tools
SketchUp Plug‐In & Visual Applications
Advanced Analysis
Functionality
EnergyPlus
OpenStudio SDK Broad Market P
enetratio
n
User ExpertiseExperts Beginners
Radiance
• OpenStudio is:
• An application suite and software development kit (SDK)
• Free to use
• Free for rapid development of new applications
• Available now for PC, Mac, and Linux
http://openstudio.nrel.gov
Other Engines
simuwatt* Mobile Audit
and PV Assessment
Tool
* simuwatt is a commercial product being developed using the SDK by concept3D
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The OpenStudio Application
3Credit: David Goldwasser / NREL
Workflow
Workflow
Define Resources
ReviewResults
Templates and
Custom HVAC
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BaselineModel
A New Approach to Auditing and PV Assessment & Design
Software Guided Workflow
+Procedural Modeling
• Tablet‐based application facilitates rapid, consistent data collection– Geometry, schedules, systems, etc.
• Building contents linked to BCL• OpenStudio creates detailed energy model• Goal: 75% reduction in cost for level 3 audits
BCL Components
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BaselineModel
Detailed Measure Assessment
BCL Measures
• BCL measures are applied to the baseline
• Provides detailed performance assessment that includes interaction effects
• Here we can see the most critical contributors to cooling load Heavy
WallsHeavy Floors
South Overhang
East Overhang
West Overhang Sunspace
South Windows
% of C
ooling En
ergy Variance
DesignAlternatives
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Xcel Energy Design Assistance Program Tracker (EDAPT)
• Problem: Reduce cost of Xcel’s EDA program, while maintaining quality as additional energy consultants are engaged
• Solution:
– EDAPT web service tracks projects, manages data and communications, and reports program‐wide outcomes
– OpenStudio and BCL are expanded to include automated quality and EDA protocol checking
– EDAPT connects high level project data with model outcomes to streamline reporting
• Planned for Launch in Spring 2013
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OpenStudio Model Generator and RunManager
OpenStudio Model Generator and RunManager
SDDSDD
SDD
Title 24 Compliance Engine Software
Title 24 Compliance Engine Software
CEC Title 24 Compliance Engine
• OpenStudio or other GUIs can produce a baseline model using the Standards Data Dictionary (SDD) format
• The compliance engine produces a range of variant SDDs representing Title 24 compliant alternatives
• OpenStudio converts these SDDs into full energy models and simulates them
SDD
OpenStudio and Other 3rd Party Interfaces
OpenStudio and Other 3rd Party Interfaces
Report GeneratorReport
Generator
SimulationResults
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National Grid Portfolio‐Scale Analysis
• Procedural modeling of portfolio using high level descriptors (size, type, etc.)
• Tune models from performance data– High level approach to Inverse modeling– Tune additional parameters as needed
• Large‐scale analysis will be used to:– Focus incentive program marketing– Reduce program performance risk– Inform design of new programs
• Simulations can be:– Run as required (e.g. Asset Rating Tool)– Used as part of large parametric analyses– Massively pre‐computed (e.g. DEnCity)
• Audits become a validation step
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http://openstudio.nrel.govhttp://bcl.nrel.gov