passive house in ca, 2012
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Top 10 Reasons to Build Passive House in CA in 2012by Bronwyn Barry, Director, One Sky HomesTRANSCRIPT
Top Ten Reasons to Build ‘Passive House’ in California for 2012
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Bronwyn Barry, Assoc. AIA, CPHCDirector, One Sky HomesPHCA Co-President2012
“The Passive House movement shows us what's possible with ultra-low-energy buildings. These
homes are pushing the envelope and creating an invaluable collection of case studies that
demonstrate just how dramatically energy consumption can be reduced--and how we can
meet the targets for carbon emission reductions that are needed to slow global warming. It
provides metrics and a path for implementation.” – Alex Wilson
10: It wins awards and recognition1
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The ‘Go Home’ receives USGBC 2011 Project of the Year AwardG.O Logic Homes, Belfast, Mainewww.gologichomes.com
10: It wins awards and recognition1
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R-House, Syracuse, NY wins AIA Housing Award 2011Della Valle Bernheimer and Architecture Research Officewww.d-bd.com and www.aro.netImage credits: della valle bernheimer
9: Our climate makes it easy!1
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Carbon Neutral & Net Energy +Passive Housein…. WISCONSIN!
TE Studiowww.testudio.comImage credits: tim eian
Fossil-fuel free home +Passive Housein…. ALASKA!
Thorsten Chluppwww.cchrc.orgImage credits: sam harel/newsminer
8: It’s proven to work!1
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LBNL Study monitors Ten Deep Energy Retrofits (Including two PH projects
Both found to performAS PREDICTED!
Brennan Less & Jeremy FischerLawrence Berkeley National LabsSource: http://eetd-seminars.lbl.gov/sites/eetd-seminars.lbl.gov/files/DER_LBNLPresentation_Final_Aug2011.pdf
7: It’s not far off Title-24 req’s1
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Case Study #1:
Project: Stettner ResidenceCity: Albany, CATFArea: 1,448 sfSSHD: 4.43 kBTU/sfyrACH: 0.5 - 0.7 @50Pa (tbc)
Architect: Greg Armitage, AIABuilder: Jim Allen, Construction Etc. CPHC: Heidi Stettner
Image: Heidi Stettner, 2012.
7: Case Study #1 – Albany, CA1
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Windows Walls Roof Floor Total0
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Typical T-24 Project R-value (hr.ft2°F/BTU.in)
PH Project R-value (hr.ft2°F/BTU.in)
Stettner Residence T-24 vs PH Insulation Value ComparisonData source: Bronwyn Barry, CPHC for Quantum Builders, 2010
7: Case Study #2 – San Jose, CA1
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Project: Codianne Miller ResidenceCity: San Jose, CAArea: 2,049 sf (TFA) 2,520sf (Reg)SSHD: 1.84 kBTU/sfyrACH: (not built)
Design+Build: One Sky Homes
7: Case Study #2 – San Jose, CA1
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Codianne Miller Residence, San Jose, CAOne Sky HomesData source: Bronwyn Barry, CPHC, One Sky Homes, 2012
Fndn Walls Roof Windows TOTAL:0
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T-24 (R-nom)PH (R-eff)
6: You will acquire new skills1
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Ye (for PHPP) 0.042 Btu/hr*f*F
Ye (for PHPP) 0.136 Btu/hr*f*F
Ye (for PHPP) 0.103 Btu/hr*f*F
THERM ANALYSIS:Slab Foundation StudyFor San Jose NZE project:
1: Best case:
2: Worst case: (not shown)
3. Most effective case:
Source: THERM analysis by Bronwyn Barry, CPHC, for One Sky Homes, 2012.
5: AB 32 (2020) and AIA 2030 1
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Source: http://www.edf.org/climate/AB32?s_src=ggad&s_subsrc=ab32&gclid=CJrphbG42q0CFQiBhwod03wjCg.
AB 32 requires California to lower greenhouse gas emissions to 1990 levels by 2020, the equivalent of taking approximately 28 million cars off the nation's roads. To meet reduction targets, the California Air Resources Board (CARB), the lead agency responsible for implementing the act, is following a blueprint approved in late 2008 known as the AB 32 Climate Change Scoping Plan. The plan lays out the strategy and a comprehensive set of actions including:
Expanding and strengthening energy efficiency programs and building and appliance standards.
4: You’ll add new tools to your belt1
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Source: Cost Benefit Analysis by Bronwyn Barry, CPHC, for Quantum Builders, 2009
Larkspur Remodel Window Cost Benefit Analysis
Brand Existing US- Av. Euro Av. PH Certified US -good US-best Canadian
R-value W#5 0.99 2.69 5.73 8.68 6.09 8.64 5.9
Heat Dem # (kBTU/ft2yr) 13.7 7.63 6.97 5.71 6.05 8.01 6.75
Price / $29,400.00 $45,344.50 $50,830.00 $35,507.42 $92,297.79 $39,852.10
Heat Dem delta 0 6.07 6.73 7.99 7.65 5.69 6.95
$ Saving/a** 0 1,736.02 1,924.78 2,285.14 2,187.90 1,627.34 1,987.70
30yr $saving 0 182.10 57,743.40 68,554.20 65,637.00 48,820.20 59,631.00
40yr $saving 0 69,440.80 76,991.20 91,405.60 87,516.00 65,093.60 79,508.00
yrs to paybk 0 16.94 23.56 22.24 16.23 56.72 20.05
30 yr CO2 savings (lbs) *** 0 20.03 22.21 26.37 25.25 18.78 22.94
(Highest/Best rating shown in orange field.)
* The above revised Sorpetaler cost & rating # reflects the following changes:
New TF Design window profile (rated at R8 value.) with triple glazing
Double glazed wood Accordian-Sliding door at Dining Room
Bug screen for 10 side window units only (no doors.)
** Assuming $0.13 per kBTU/ft2yr (1 Therm = 100,000 BTUs = $1.30 @ 2,200sf =$286.00)
*** 11 lbs of CO2 saved for each Therm saved
3: Passive is going Massive!1
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Source: http://inhabitat.com/the-ridge-net-zero-energy-mixed-use-passive-house-project-gets-thumbs-up-in-philadelphia/
The Ridge, Mixed-Use project approved for Philadelphia, PAOnion Flats, Art + Architecture + Buildingwww.onionflats.com
Image credits: onion flats
3: Passive is going Massive!1
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Source: http://inhabitat.com/the-ridge-net-zero-energy-mixed-use-passive-house-project-gets-thumbs-up-in-philadelphia/
The Ridge, Mixed-Use project approved for Philadelphia, PAOnion Flats, Art + Architecture + Buildingwww.onionflats.com
Image credits: onion flats
2: Everybody is doing it!1
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Zero Cottage, SFDavid Baker + Partners Architectswww.dbarchitect.com
Image credits: David Baker + Partners
2: Everybody is doing it!1
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Images source: http://blogs.sfzc.org/blog/2011/10/18/new-student-housing-at-green-gulch-farm/
Green Gulch Zen Center, Student HousingMarin, CA
JSW+D Architectswww.jswdarch.com
2: Everybody is doing it!1
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Source: http://inhabitat.com/the-ridge-net-zero-energy-mixed-use-passive-house-project-gets-thumbs-up-in-philadelphia/
Field Chiarello Retrofit,Portola Valley, CAScott Schell, EHDDwww.ehdd.com
Image credits: www.greatbuildings.com
Project Green Home,Palo Alto, CAArkin Tilt Architectswww.arkintilt.com
Image credits: Bronwyn Barry
2: Everybody is doing it!1
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Clarum Homes,Menlo Park, CAJohn Suppes, Clarum Homeswww.menloparkpassivehome.com
Image credits: www.menloparkpassivehome.com
One Sky Homes,San Jose, CAAllen Gilliland, One Sky Homeswww.oneskyhomes.com
Image credits: Allen Gilliland
Abatement cost <$50/ton
U.S. mid-range abatement curve – 2030
Source: McKinsey analysis
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CostReal 2005 dollars per ton CO2e
1.0 1.2 1.4 1.8 2.00.2 2.2 2.4 2.6 2.8 3.01.60.4 0.6 0.8
-230
Residential electronics
Commercial electronics
Residential buildings – Lighting
Commercial buildings – LED lighting
Fuel economy packages – Cars
Commercial buildings – CFL lighting
Cellulosicbiofuels
Industry – Combined heat and power
Existing power plant conversion efficiency improvements
Conservation tillage
Fuel economy packages – Light trucks
Commercial buildings – Combined heat and power
Coal mining – Methane mgmt
Commercial buildings – Control systems
Distributed solar PV
Residential buildings – Shell retrofits
Nuclear new-build
Natural gas and petroleum systems management
Active forest management
Afforestation of pastureland
Reforestation
Winter cover crops
Onshore wind – Medium penetration
Coal power plants – CCS new builds with EOR
Biomass power – Cofiring
Onshore wind –High penetration
Industry – CCS new builds on carbon-intensive processes
Coal power plants – CCS new builds
Coal power plants – CCS rebuilds
Coal-to-gas shift – dispatch of existing plants
Car hybridi-zation
Commercial buildings – HVAC equipment efficiency
Solar CSP
Residential buildings – HVAC equipment efficiency
Industrial process improve-ments
Residential water heaters
Manufacturing – HFCs mgmt
Residential buildings – New shell improvements
Coal power plants– CCS rebuilds with EOR
PotentialGigatons/year
Commercial buildings – New shell improvements
Afforestation of cropland
Onshore wind –Low penetration
1.5: Insulation is cheaper than PV
1: Free Beer at the meetings!1
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Passive House California, Silicon Valley Meeting, 2011 Monthly meetings: Sunday 3-5.30pm in Berkeley, CAwww.passivehousecal.org
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THANK YOU!
Bronwyn Barry, Assoc. AIA, CPHCDirector, One Sky HomesPHCA President2012
PHCA Highlights for 2012:• February Meeting at Das Haus, Fort Mason, SF• Design + Build project with Laney College• Shared events with PHNW and NYPH• Trainings• And a few beers…
www.aphnetwork.org