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Multifamily Air Sealing Program. Bobbi Wilhelm/John Forde. Implementation & Evaluation protocols. March 20, 2013. Team Introductions. Puget Sound Energy: Bobbi Wilhelm: Evaluation John Forde: Market Manager Clint Stewart: Program Manager Arrow Insulation: Ben Burton: Sr. Program Manager - PowerPoint PPT Presentation
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Multifamily Air Sealing Program
Bobbi Wilhelm/John Forde
Implementation & Evaluation protocols
March 20, 2013
2
Team Introductions
Puget Sound Energy: Bobbi Wilhelm: Evaluation John Forde: Market Manager Clint Stewart: Program Manager
Arrow Insulation: Ben Burton: Sr. Program Manager Dave Burton: Program Manager Jay Dupree: Field Rep
DNV KEMA: Jarred Metoyer & Team
More help & support is located on the Microsoft website:http://office.microsoft.com/en-us/powerpoint-help/CL010072915.aspx?CTT=97
Agenda
Overview of the Air Sealing Program
Buildings Served
Air Sealing Video
Program Implementation Protocols
Video of Air Sealing Project
Program Evaluation Protocols/Strategy
3
Why Multifamily Air Sealing I-937
PSE continues to seek new energy savings opportunities in all sectors, including multifamily
Based on the number of electrically heated multifamily buildings/units in the PSE service area, there is significant energy savings opportunity. The estimated potential is 200,000 units
During the 2012-13 RFP process, Arrow Insulation Inc. submitted a Multifamily Air Sealing Proposal
4
Program Overview
Measures Include: Attic air sealing and insulation Dense pack walls/rim joists Floor air sealing and insulation Door gaskets and sweeps Ventilation fan timers
Air sealing only measures if already insulated or combined air sealing and insulation
On site audit to gather building information Utilizes whole building blower door testing (pre-post) Program Implementation team conducts post
installation TREAT modeling.
5
Program Overview Continued
Program started January, 2012 and will be completed by December 2013
Building types range from 6 units single story to 20 units with 3 stories and located in most of the service area counties
Recruitment through past weatherization participants, program marketing efforts, etc.
Owners must commit to no additional energy efficient upgrades for 1 year (including heating season)
6
Units Served to Date
Previously Insulated Buildings (no additional insulation):
18 Buildings 133 Units 71,328 sq ft attic & floor 63,772 sq ft walls
Non-previously Insulated: 15 Buildings 142 Units 91,357 sq ft Attic & Floor 58,027 sq ft Walls
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Protocols
Comprehensive TREAT audit performed Measures include:
Attic air sealing and insulation Dense pack walls/rim joists Floor air sealing and insulation Door gaskets and sweeps Ventilation fan timers
Inform property owner/set dates for install Whole building depressurization performed before and
after each installed measures
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Current Infiltration Reduction
9
Measure Infiltrationreduction
kWh Savings sq. ft.
Air Tightening - Ceiling, Floor, Wall insulation to
R13 42.62% 1.63
Air Tightening - Ceiling, Wall Insulation to R13(slab on grade bldgs) 47.88% 2.21
Air Tightening - Ceiling and Floor 27.15% 0.68
Current Infiltration ReductionMeasure Actual reduction kWh per sq. ft.
Wall Insulation to R13 and Air Tightening 19.85% 3.43
Ceiling Insulation to R38 and Floor to R30 and Air Tightening 32.81% 2.42
Ceiling Insulation to R38, Floor Insulation to R30, Wall Insulation to R13 and Air Tightening
44.82% 2.49
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11
Photos
Video
View Youtube Video
12
Program Implementation & Evaluation
The MF Air Sealing Team invited me (evaluation) in the room early
The team taught me what air sealing was (thanks!) The team asked for input on what needs to be done so
that we can evaluate the program I suggested:
Testing out after every measure and randomizing measure installation
Help assist with program optimization in event of lower avoided costs
Get a consultant on board who deals with complicated engineering & MF evaluations to take a look
13
As of April 2012
Team began testing in and out between measures and randomizing measure installation patterns
We sent out an RFP and hired KEMA to assist with a ‘process’ type evaluation Provide us with an overview of evaluation methods
given our implementation strategy Give us a ‘best in class’ recommendation for
evaluation of the program Provide us with a gap analysis on data needs
14
Evaluation Methods
Billing analysis Relatively complex algorithm that is accurate for program and site level, difficult to identify control difficult for regression to address non‐linear effects of
occupancy and measures Prototype Simulation with Billing History
Affordable accurate for population not accurate at the site level difficulty with understanding the ‘prototype’
Individual building models –use bill history for calibration Higher cost Most Accurate results
15
Current Program Status
Test in and out of every building Multiple blower doors – Whole building approach
Test out between every measure Provides an understanding of how measures stack up
Collecting insulation values pre & post Collecting up to 10 years of billing history data for
every building Average Heating Set point (thermostat) is gathered Building, window, etc. square footage Currently collecting lighting wattages Collecting major appliances – letting treat default on
annual kWh
16
Next Steps
True up modeling with billing history
Implement process improvements
Air seal final buildngs
Complete Evaluation
Present findings to RTF
17
Thanks!
Questions/Comments?
18