![Page 1: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/1.jpg)
LEA Lake Science Center- Preservation and Energy Efficiency
William Turner
Turner Building Science & Design, LLC
Peter Lowell
Lakes Environmental Association
BBBD Conference, Burlington Vermont, Feb. 3, 2016
Copyright TBS and LEA 2016, all rights reserved 1
![Page 2: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/2.jpg)
2
Maine Lake Science Center, High Performance Renovation Bridgton, Maine, 7,700 Heating DD, 3,600 Sq. Ft.
House & Garage – Prior to 2014-15-Retrofit
Copyright TBS and LEA 2016, all rights reserved
![Page 3: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/3.jpg)
Opportunities • 16 acre woodland lot abutting new
municipal 66-acre park • 2-minute walk to supermarket &
5-minute walk to downtown • Larger conference space badly
needed for organization • Housing for summer researchers is
expensive & hard to come by • New facility will provide hands on
training & educational activities within the property
• Property & building to provide demonstration of conservation practices, energy efficiency, & IAQ
Copyright TBS and LEA 2016, all rights reserved 3
![Page 4: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/4.jpg)
Challenges • Poorly insulated & unoccupied for several years
• Basement condensation, pervasive mold odor
• Heating relied heavily on wood stoves
• Rodent issues in old building
• Significant interior and structural reconstruction needed to function as an institutional building as well as exterior work such as advanced septic system & parking areas
• Goal: Transform building to one with low operating costs, long life, and sustainability features
Copyright TBS and LEA 2016, all rights reserved 4
![Page 5: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/5.jpg)
The Vision: A multifunctional facility in harmony with surroundings
Copyright TBS and LEA 2016, all rights reserved 5
![Page 6: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/6.jpg)
Original Structure 1980’s log cabin, with 2 x 4 stick built ell & garage, 2″ rigid insulation on cabin roof, fiberglass insulation in ell & garage
Living room & kitchen before renovations
Copyright TBS and LEA 2016, all rights reserved 6
![Page 7: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/7.jpg)
Original Downstairs •Partially below grade •3 bedrooms & one bath •Damp, musty smell
Copyright TBS and LEA 2016, all rights reserved 7
![Page 8: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/8.jpg)
Original Garage 1.5 bay garage with oil boiler room & oil tank
Copyright TBS and LEA 2016, all rights reserved 8
![Page 9: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/9.jpg)
Goals: Transform log cabin with attached garage into a year-round institutional science center with wet lab, conference room, offices, & researcher housing, re-use as much as possible.
Copyright TBS and LEA 2016, all rights reserved
Front of House before renovations
9
![Page 10: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/10.jpg)
10
The New England Climate Challenge
Portland, Maine last 12 months, {source WeatherSpark.com Beta}
Copyright TBS and LEA 2016, all rights reserved
DRYING AIR
WETTING AIR
![Page 11: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/11.jpg)
• August 2014 – Property purchased Timetable • September 2014 – Exterior ground work begins • October 2014 – New, advanced septic system installed, driveway
• November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February to March 2015 – Exterior wall insulation added,
deconstruction continues • April 2015 – Interior framing complete, plumbing, wiring, & heating
roughed in • May 2015 – Drywall installed & painted, interior finish work begins • June 2015 – Plumbing, wiring & heating completed • July to August 2015 – Interior and exterior finish work, painting &
staining completed.
• Center opens for first presentation July 9th! 10 Months
• January 2016 – IAQ Testing and Air Sealing Continue
Copyright TBS and LEA 2016, all rights reserved 11
![Page 12: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/12.jpg)
Copyright TBS and LEA 2016, all rights reserved
Class Brainstorm Session What would you do, and why, to:
Roofs Walls Log Walls Concrete Floors
HVAC Systems Lighting Air Tightness
12
![Page 13: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/13.jpg)
Roofs 4-6″ XPS & Vented Cladding
Copyright TBS and LEA 2016, all rights reserved 13
![Page 14: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/14.jpg)
Dormer added above garage for office space
Copyright TBS and LEA 2016, all rights reserved 14
![Page 15: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/15.jpg)
15
All Roofs 4-6″ XPS & Vented Cladding
Copyright TBS and LEA 2016, all rights reserved
![Page 16: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/16.jpg)
Wall Renovation Exterior or Interior 2″ XPS
Copyright TBS and LEA 2016, all rights reserved 16
![Page 17: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/17.jpg)
17
hardware cloth placed at bottom of vented
wall cavity/drain plane to keep out critters
Courtesy Turner Building Science & Design, LLC
Copyright TBS and LEA 2016, all rights reserved
![Page 18: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/18.jpg)
18
All Cavity Walls & All Roof Rafters Dense Pack Cellulose 4-8″ or more
Copyright TBS and LEA 2016, all rights reserved
![Page 19: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/19.jpg)
19
Windows & Doors
• Low E, thermal
• A few re-used
• Minimal windows on north side
(except large meeting/conference room)
Copyright TBS and LEA 2016, all rights reserved
![Page 20: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/20.jpg)
20
Interior Ridge Pole Strengthening
Copyright TBS and LEA 2016, all rights reserved
Steel collar-tie
I-Beam
Thin, high, steel collar ties, subsequently covered with wood and LED fixtures replaced one large and low, log collar tie. One large steel beam was also installed to carry the weight of the roof without the need of an obstructive post in the center of the room.
![Page 21: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/21.jpg)
Ground & Polished Concrete Floors
Finished, polished & aesthetically pleasing concrete floors on all ground levels eliminate the need for wall to wall rugs or wood which could provide breeding grounds for mold & mildew
Copyright TBS and LEA 2016, all rights reserved 21
![Page 22: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/22.jpg)
Renovated Downstairs Research Housing: 3-bedroom, kitchen, 2 baths w. exhaust & continuous energy recovery ventilation
Copyright TBS and LEA 2016, all rights reserved 22
![Page 23: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/23.jpg)
New Office Created Above Garage served by ductless mini-split, and ducted ERV
Copyright TBS and LEA 2016, all rights reserved
LED cans inside thermal enclosure and air barrier
23
![Page 24: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/24.jpg)
Garage Converted to Open Lab Heated by condensing propane boiler with efficient LED can lights, also served by Energy Recovery Ventilator
Copyright TBS and LEA 2016, all rights reserved 24
![Page 25: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/25.jpg)
Energy Recovery, DHP, Condensing Boiler
80% Efficiency
Continuous ventilation with very limited heat loss & humidity control
High efficiency heating & air conditioning
Efficient propane boiler
Copyright TBS and LEA 2016, all rights reserved 25
![Page 26: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/26.jpg)
Cabin Main Floor Now Open Conference Space ductless mini-spit heat/AC/dehumidification & monitor heater + (CO2 Monitor & Operable Windows)
Copyright TBS and LEA 2016, all rights reserved 26
![Page 27: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/27.jpg)
27
Courtesy of The Bridgton News
Finished Project
Summary R Values: Roofs R= 30+ Walls R= 30+ (Logs Left as logs and holes air sealed)
Copyright TBS and LEA 2016, all rights reserved
![Page 28: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/28.jpg)
28 Copyright TBS and LEA 2016, all rights reserved
Blower Door Testing & Infrared Image Under Positive Pressure
![Page 29: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/29.jpg)
29
IR Images January 2016 (+ pressure)
Copyright TBS and LEA 2016, all rights reserved
Missing Insulation At Electrical Entrance (repaired) & Uninsulated Basement Frost Wall (to be addressed), Very Good Roof and Walls
![Page 30: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/30.jpg)
30
IR Images January 2016 (+ Pressure)
Copyright TBS and LEA 2016, all rights reserved 30
Air Exfiltration (Mostly Repaired)
![Page 31: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/31.jpg)
Air Sealing Logs With One-part Foam With 20-gauge needle
31
4 cans total
Copyright TBS and LEA 2016, all rights reserved
![Page 32: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/32.jpg)
Blower Door Test Before & After Log Air Sealing
Copyright TBS and LEA 2016, all rights reserved 32
![Page 33: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/33.jpg)
Copyright TBS and LEA 2016, all rights reserved 33
Sealing Logs Reduced Air Leakage And Should Reduce Operating Cost by a Significant Amount
![Page 34: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/34.jpg)
© MIAQC, TBS, LLC, DJ & Co,
2016 34
Too Leaky
Very Tight
Courtesy Camroden Associates.
?
?
![Page 35: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/35.jpg)
CFM50 = 4000
CFM50 = 2000
Desired ventilation = 75 CFM
CFM50 = 1000
CFM50 = 1000 + 75 CFM fan
050
100
150
200
250
Ventila
tion R
ate
, C
FM
0 20 40 60 80 100
Outdoor Temperature, degrees F
Based on single-story 1,500ft2 house
Chart courtesy of Paul Francisco
Outdoor T° vs Natural Ventilation Rate
© MIAQC, TBS, LLC, DJ & Co, 2016 35
CFM
Nat
ura
l
![Page 36: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/36.jpg)
CO2 Readout & Monitoring
Copyright TBS and LEA 2016, all rights reserved 36
![Page 37: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/37.jpg)
© 1999-2012 NEEC
Carvo
CO2 Concentration (ppm)
OU
TS
IDE
AIR
(C
FM
/ P
ER
SO
N)
30 -
25 -
20 -
15 -
10 -
5 -
0 -
0 1000 2000 3000 4000 5000
| | | | | |
Carbon Dioxide As An Indicator of Ventilation Rates
![Page 38: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/38.jpg)
Copyright TBS and LEA 2016, all rights reserved 38
1 person After Leaving Tracer Decay Rate = .176 ACH Outside temp. = 30
Occupied Unoccupied
![Page 39: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/39.jpg)
Copyright TBS and LEA 2016, all rights reserved 39
![Page 40: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/40.jpg)
Copyright TBS and LEA 2016, all rights reserved
22 people Before Log Air Sealing After Leaving Tracer Decay Rate = .180 ACH Outside temp. = 25
40
![Page 41: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/41.jpg)
Copyright TBS and LEA 2016, all rights reserved 41
22 people 1 Window Opened After Log Air Sealing After Leaving (window closed) Tracer Decay Rate = .203ACH Outside temp.= 25
Possible Conclusion: Log air sealing did not appear to significantly change natural air leakage rate in log structure.
Goal
![Page 42: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/42.jpg)
42
CO2 Data
Copyright TBS and LEA 2016, all rights reserved 42 Copyright TBS and LEA 2016, all rights reserved
![Page 43: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/43.jpg)
Current Exhaust System Test Data (CFM)
Copyright TBS and LEA 2016, all rights reserved
Kitchen 100 Shower 73 Basement Bath 50? Conference Bath 60 Office Bath 65 total all approx. 350 Divided by 15 CFM = 23 people
43
![Page 44: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/44.jpg)
Copyright TBS and LEA 2016, all rights reserved 44
Conference Room with All Current Exhaust fans “On” - 6 PA
Question: Could running all building exhaust fans “on” provide enough mechanical ventilation in the conference room?
![Page 45: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/45.jpg)
In theory running all “exhausts” in the
facility with the parting door to the conference
room open and 2 windows open 6 inches or so will
prevent this spike?
What about Radon Entry?
Stay tuned.
Copyright TBS and LEA 2016, all rights reserved
??
45
![Page 46: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/46.jpg)
Current Energy Use Data ½ year
Copyright TBS and LEA 2016, all rights reserved
Electric kWh 8/12 298 9/9 238 10/15 126 11/5 403 12/4 980 Total 1642 If above is ½ 3,284kWh total
Propane 11/5 Est 50 12/14 61 1/14 96 Total 207 If above is ½ 414 gal total 28KWh per gal 11,592 kWh total
If current energy use for ½ of the year is reasonable, the total estimated energy use for the year could be in the vicinity of 14,876 kWh
Degree Days Aug 9 Sept 121 Oct 604 Nov 766 Dec 926 Jan 1087 Total 3513 About ½ of 7,676
46
![Page 47: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/47.jpg)
Thousand Home Challenge OPTION B, 50% Milestone Threshold in kWh/yr.
Copyright TBS and LEA 2016, all rights reserved
OPTION B Inputs: ZIP Code: 04009; 3,500 Ft2 FFA; 1 occupant; 50% electric heat
0 5,000 10,000 15,000 20,000
50% Milestone(1 occ. 50% electric heat)
THC OPTION B Threshold(1 occ. 50% electric heat)
Heat
Hot Water
Everything Else
Target Use: 18,544 kWh/yr.
?
47
http://www.thousandhomechallenge.com/collaborators
70 % milestone
![Page 48: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/48.jpg)
Maine Thousand Home Challenge
• Not a typical home, but provides housing & is a good example of possible upgrades for Maine homes or buildings
• 1000 Home Challenge inputs will be modified to address partial occupancy as well as events
• There is no sub metering of separate building areas so threshold is based on entire building, residential, lab, office, and conference space
Copyright TBS and LEA 2016, all rights reserved 48
![Page 49: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/49.jpg)
Lessons Learned to Date • Old Building: Letting in uncontrolled “fresh air” in is
not always a good idea in a climate with hot humid summers & ice cold winters
• “Tight” structures need ventilation and dehumidification control for indoor air quality & mold prevention (and don’t forget radon)
• Polished concrete floor in basement/first floor eliminates mold sources, looks good, & is easy to clean
• New, energy efficient homes would all benefit from a “User’s Guide”
• Reconstruction always costs more than you estimate!
Copyright TBS and LEA 2016, all rights reserved 49
![Page 50: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/50.jpg)
Lessons Still Being Learned • It remains to be proven that natural ventilation
(operable windows) supplemented by “exhaust” can work well in the conference room area.
• Window screens will be needed in the conference room operable windows for bug season.
• How to set T stats and controls on Heat Pumps for most economical operation.
Copyright TBS and LEA 2016, all rights reserved 50
![Page 51: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/51.jpg)
Areas To Further Address
Copyright TBS and LEA 2016, all rights reserved 51
Areas that could benefit from more insulation
![Page 52: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/52.jpg)
Current Project
Summary R Values Roofs R= 30-40+ Walls R= 30+ Windows R = 3 (Logs, Air Sealed, & Left as Logs in Meeting Area) CFM50 1200CFM ACH50 2 Copyright TBS and LEA 2016, all rights reserved 52
![Page 53: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/53.jpg)
For more information about the
Maine Lake Science Center please visit: www.mainelakes.org
Copyright TBS and LEA 2016, all rights reserved
Funding for the Maine Lake Science Center was made possible from donations from the Morton Kelly Foundation, an Anonymous Family Foundation, the Kendall and Anna Ham Foundation, the Davis Conservation Foundation, the Stephen and Tabitha King Foundation, the Margaret Burnham Charitable Trust, and the Norcross Wildlife Foundation as well as generous financial support of LEA members, and numerous local business and community members who donated time, equipment and services.
Lakes Environmental Association 230 Main Street Bridgton, ME 04009 (207) 647 8580
53
![Page 54: LEA Lake Science Center- Preservation and Energy Efficiency · • November 2014 – Interior deconstruction begins • January 2015 – Roof insulated, steel roof complete • February](https://reader034.vdocuments.mx/reader034/viewer/2022050221/5f6661d85022be6fdb1bf0bc/html5/thumbnails/54.jpg)
Copyright TBS and LEA 2016, all rights reserved
Thank You
54