Missouri Residential Energy Code Baseline Study Update Meeting June 1, 2016 1
Welcome Brenda Wilbers, DED/DE 2
Presentation Topics • Meeting Goals • Review Goals & Rationale of Study • Data Collection Update • Overview of Preliminary Results • Sampling Plan Updates • Group Discussion • Next Steps / Collaboration 3
Meeting Goals • Review the study and data collection plan with key energy code stakeholders • Provide an update on preliminary findings, logistics of data collection, and experiences in the field • Facilitate an efficient data collection process for the remaining counties through stakeholder collaboration 4
Overview of Project • DED/DE contracted with MEEA to conduct residential study to determine current construction practices relative to 2009 IECC • Results from this study will be used to determine statewide compliance with ARRA requirements • New single-family homes throughout Missouri 5
Goals & Rationale of Study • Collect in-field construction data from random sample of homes across Missouri • Obtain statistically-significant observations of 9 key measures • All data collected will be anonymous and only analyzed on statewide level • Use collected data as a basis to determine statewide compliance with ARRA requirements – The collected data will be analyzed by the Pacific Northwest National Laboratory on an energy use basis 6
9 Key Items • Envelope Tightness • Window Solar Heat (ACH50) Gain Coefficient (SHGC) • Window U-Factor • Exterior Wall • Ceiling Insulation Insulation • Foundation Insulation • High Efficacy Lighting • HVAC Right Sizing • Duct Leakage (Manual J Block (CFM25) Load) 7
Study Structure and Timeline • DED/DE: Funding and general oversight of study • MEEA: Management of study & subcontractors • Matt Belcher: Outreach to builders & code officials and coordinating site access • The Cadmus Group: On-site data collection Data collection began April 6 th and ends June 30 th 8
Map of where we have been so far Data collection is 70% complete as of 5/26/16 9
Matt Belcher (Data Collection Facilitator) 10
The Cadmus Group (Data Collector) 11
Overview of Preliminary Results 12
Preliminary - Blower Door Results (ACH50) 12 10 10 Orange Line = 2009 IECC (7 ACH50 maximum) 8 7 Frequency 6 6 4 2 1 1 0 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 ACH50 13
Preliminary - Duct Leakage - Conditioned Space (CFM25) 10 9 9 Orange Line = 2009 IECC 8 (12 CFM25 maximum) 7 Frequency 6 5 4 4 3 2 2 2 1 1 1 1 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 CFM25 14
Preliminary - Duct Leakage - Unconditioned Space (CFM25) 10 9 Orange Line = 2009 IECC 8 (12 CFM25 maximum) 7 Frequency 6 5 4 3 2 1 1 1 1 1 1 1 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 CFM25 15
Preliminary - High Efficacy Lighting (%) 20 19 18 Orange Line = 2009 IECC 16 (50% minimum) 14 Frequency 12 10 8 6 4 4 2 1 1 1 0 0 10 20 30 40 50 60 70 80 90 100 Percentage 16
Preliminary - Wall Insulation - R-Value 25 22 20 Orange Line = 2009 IECC 15 Frequency (R-13 minimum) 10 5 2 1 0 12 13 14 15 16 17 18 19 R-Value 17
Insulation Installation Grades Diagrams from the HERS Standards 18
Preliminary - Wall Insulation Quality 16 15 14 12 1 is the highest insulation quality, and 3 is the lowest 10 insulation quality Frequency 8 7 6 4 3 2 0 1 2 3 Insulation Quality 19
Preliminary - Ceiling Insulation - R- Value 18 16 16 14 13 Orange Line = 2009 IECC (R-38 minimum) 12 Frequency 10 8 6 4 2 0 29 30 31 32 33 34 35 36 37 38 39 R-Value 20
Preliminary - Ceiling Insulation Quality 30 26 25 1 is the highest insulation quality, and 3 is the lowest insulation quality 20 Frequency 15 10 5 3 0 1 2 3 Insulation Quality 21
Preliminary - Basement Wall Insulation - R-Value 25 20 20 Orange Line = 2009 IECC Frequency 15 (R-10 continuous minimum or R-12 cavity minimum) 10 8 5 2 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 R-Value 22
Preliminary - Furnace Efficiency (AFUE) 18 16 16 14 12 11 Frequency 10 8 6 4 4 3 3 2 1 0 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 AFUE 23
Preliminary - Window U-Factor 7 6 6 5 5 5 Orange Line = 2009 IECC (.35 U-factor maximum) Frequency 4 3 3 2 2 2 1 1 1 1 1 1 0 0.28 0.29 0.3 0.31 0.32 0.33 0.34 0.35 0.36 0.37 0.38 0.39 0.4 0.41 0.42 0.43 0.44 0.45 0.46 0.47 0.48 U-Factor 24
Enjoy The Break! 25
Sampling Plan Methodology • Based on 2015 Census Permit Data • Only Single Family Homes • Permits are Weighted by County • Then Randomly Selected • Representative Cross-Section of Construction 26
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County Substitution Process • So far the only substitution required is St. Louis City – Lack of construction • Look for demographic similarity and reasonably proximity – Typically things like population, median income, owner occupancy rate, education, poverty level, density – In this case a major consideration is a similar urban environment • Check for similar construction types and techniques 28
Group Discussion • Feedback on sampling plan methodology and preliminary results • Suggestions of partners/contacts to make remaining data collection as efficient as possible • General discussion, feedback, and questions 29
Next Steps • Field data collection continues – Southwest Missouri, St. Louis city, other • MEEA will submit report to DED/DE in mid / late summer 2016 • PNNL will analyze final data 30
Contact Information • Chris Burgess, MEEA – cburgess@mwalliance.org • Kelsey Horton, MEEA – khorton@mwalliance.org • Matt Belcher – belcherma@missouri.edu • Brenda Wilbers – brenda.wilbers@ded.mo.gov 31
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