Missouri Residential Energy Code Baseline Study Update Meeting - - PowerPoint PPT Presentation

Missouri Residential Energy Code Baseline Study

Update Meeting June 1, 2016

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Welcome

Brenda Wilbers, DED/DE

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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
• f 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

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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

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9 Key Items

• Envelope Tightness

(ACH50)

• Window U-Factor
• Ceiling Insulation
• Foundation Insulation
• HVAC Right Sizing

(Manual J Block Load)

• Window Solar Heat

Gain Coefficient (SHGC)

• Exterior Wall

Insulation

• High Efficacy Lighting
• Duct Leakage

(CFM25)

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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 6th and ends June 30th

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Map of where we have been so far

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Data collection is 70% complete as

• f 5/26/16

Matt Belcher (Data Collection Facilitator)

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The Cadmus Group (Data Collector)

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Overview of Preliminary Results

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6 10 7 1 1 2 4 6 8 10 12 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39

Frequency ACH50

Preliminary - Blower Door Results (ACH50)

Orange Line = 2009 IECC (7 ACH50 maximum)

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1 4 2 1 1 2 9 1 2 3 4 5 6 7 8 9 10 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80

Frequency CFM25

Preliminary - Duct Leakage - Conditioned Space (CFM25)

Orange Line = 2009 IECC (12 CFM25 maximum)

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1 1 1 1 1 1 1 2 3 4 5 6 7 8 9 10 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80

Frequency CFM25

Preliminary - Duct Leakage - Unconditioned Space (CFM25)

Orange Line = 2009 IECC (12 CFM25 maximum)

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19 4 1 1 1 2 4 6 8 10 12 14 16 18 20 10 20 30 40 50 60 70 80 90 100

Frequency Percentage

Preliminary - High Efficacy Lighting (%)

Orange Line = 2009 IECC (50% minimum)

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22 1 2 5 10 15 20 25 12 13 14 15 16 17 18 19

Frequency R-Value

Preliminary - Wall Insulation - R-Value

Orange Line = 2009 IECC (R-13 minimum)

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Insulation Installation Grades

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Diagrams from the HERS Standards

7 15 3 2 4 6 8 10 12 14 16 1 2 3

Frequency Insulation Quality

Preliminary - Wall Insulation Quality

1 is the highest insulation quality, and 3 is the lowest insulation quality

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13 16 2 4 6 8 10 12 14 16 18 29 30 31 32 33 34 35 36 37 38 39

Frequency R-Value

Preliminary - Ceiling Insulation - R- Value

Orange Line = 2009 IECC (R-38 minimum)

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26 3 5 10 15 20 25 30 1 2 3

Frequency Insulation Quality

Preliminary - Ceiling Insulation Quality

1 is the highest insulation quality, and 3 is the lowest insulation quality

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20 8 2 5 10 15 20 25 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

Frequency R-Value

Preliminary - Basement Wall Insulation - R-Value

Orange Line = 2009 IECC (R-10 continuous minimum or R-12 cavity minimum)

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23

16 11 3 1 3 4 2 4 6 8 10 12 14 16 18 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100

Frequency AFUE

Preliminary - Furnace Efficiency (AFUE)

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1 1 5 3 2 1 5 2 1 1 6 1 2 3 4 5 6 7 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

Frequency U-Factor

Preliminary - Window U-Factor

Orange Line = 2009 IECC (.35 U-factor maximum)

Enjoy The Break!

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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

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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

• ccupancy rate, education, poverty level, density

– In this case a major consideration is a similar urban environment

• Check for similar construction types and techniques

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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

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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

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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

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