Specifications for New Underground Residential Distribution Systems
Residential Field Study · Residential Study PNNL conducted these analyses of the collected data:...
Transcript of Residential Field Study · Residential Study PNNL conducted these analyses of the collected data:...
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Residential Field Study
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• In 2014 the US Department of Energy
funded 3-year residential energy code
studies in eight states
• Study goals
– Establish compliance baseline, and calculate
potential savings
– Determine if focused training & support can
improve compliance
• Collected data will be anonymous
BackgroundResidential Study
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Data Collection ProcessResidential Study
• DOE established a data collection protocol
– Randomized Sampling Plan
– Key Items Must be Observed
– 63 Observations of Each Key Item
– Single Visit to a Given Home
• Collaborative will provide feedback and
guide the project
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US DOE Key ItemsResidential Study
• Foundation Insulation (R-value and Quality)
• High Efficacy Lighting
• Duct Leakage (CFM25)
• Envelope Tightness (ACH50)
• Window Solar Heat Gain Coefficient
• Window U-factor
• Wall Insulation (R-value and Quality)
• Ceiling Insulation (R-value and Quality)
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Progress To DateResidential Survey
• Recruitment delays due to weather,
late project start and construction
season timing, building industry
irregularities, etc.
• Data collection completed in
September 2019
• Anonymized data has been sent to
PNNL.
• Results received October 30, 2019.
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PNNL AnalysisResidential Study
PNNL conducted these analyses of the
collected data:
• Compliance Distribution Analysis
– Examination of the field data, and data
distribution relative to compliance
requirements
• Measure-Level Savings Analysis
– Projection of potential savings associated with
improved compliance
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Measure-Level AnalysisResidential Study
• Measure-level analysis includes all key items having non-compliant observations
• The savings potential from each non-compliant value is evaluated in isolation
• An individual “as-built” model is created for each non-compliant value, with all other values remaining at code compliant levels
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Measure-Level AnalysisResidential Study
• An average energy savings potential for each key item is then calculated
• State-specific construction volumes and fuel prices are used to calculate the key item savings potential of full compliance
• Share analysis with stakeholders
• Design and start support program!
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Data collectionResidential Study
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Trends based on available dataResidential Study
Climate Zone
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Trends based on available dataResidential Study
Permit Code
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Trends based on available dataResidential Study
Compliance Path
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Trends based on available dataResidential Study
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Trends based on available dataResidential Study
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Trends based on available dataResidential Study
Knee Wall Insulation Quality Basement Wall Insulation Quality
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Trends based on available dataResidential Study
Roof Cavity Insulation Quality Framed Wall Insulation Quality
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Trends based on available dataResidential Study
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Trends based on available dataResidential Study
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Trends based on available dataResidential Study
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Trends based on available dataResidential Study
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Trends based on available dataResidential Study
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Trends based on available dataResidential Study
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Trends based on available dataResidential Study
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Trends based on available dataResidential Study
2018 IECC: ACH 4
2015 IECC: ACH 5