Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

The American Dream Renewed - Passive House for Everyone

149 views

Published on

Lecture at NAPHN17 conference in Oakland, CA. Tim Eian uses the opportunity to stress the potential to significantly reduce carbon in buildings with the help of the Passive House building energy standard.

Published in: Design
  • Be the first to comment

  • Be the first to like this

The American Dream Renewed - Passive House for Everyone

  1. 1. The American Dream Renewed: Passive House Plus for Everyone Tim Delhey Eian TE Studio & Intep Passive House Minnesota
  2. 2. Affordable, efficient, comfortable and sustainable housing, which is not a burden on resources and does not produce greenhouse gases. American Dream in the 21st Century?
  3. 3. Why?
  4. 4. Climate Change
  5. 5. What is sustainable?
  6. 6. 1,500 Watts (renewable)/ Person + 500 Watts (non-renewable)/ Person = 2,000 Watts/ Person and 1 ton CO2/ Person/ Year One Target for Spaceship Earth wattSOCIETY One target. Our community. Stepping up now.
  7. 7. What is the status quo?
  8. 8. 10,750 Watts 1,250 Watts Renewable Non Renewable 12,000 Watts/ Person and 20 tons CO2/ Person/ Year
  9. 9. Well, how do we do that?
  10. 10. 500 Watts 11,500 Watts Renewable Non Renewable 8,000 Watts 500 Watts 1,500 Watts Renewable Non Renewable Efficiency/ Sufficiency Substitution, or Sufficiency + Efficiency?
  11. 11. Changes on a Macro Level
  12. 12. SPACE HEATING DOMESTIC HOT WATER VENTILATION PLUG AND APPLIANCES, UNIT LIGHTING, COMMON LIGHTING, UNIT EQUIPMENT AND AMENITY ELEVATORS TRANSPORTATION Source Primary Energy Site Energy Useful Energy Primary Energy Reduction Factors Efficiency Operation Current Setup
  13. 13. SPACE HEATING DOMESTIC HOT WATER VENTILATION PLUG AND APPLIANCES, UNIT LIGHTING, COMMON LIGHTING, UNIT EQUIPMENT AND AMENITY ELEVATORS TRANSPORTATION Source Primary Energy Site Energy Useful Energy Primary Energy Reduction Factors Efficiency Operation Tomorrow’s Setup
  14. 14. Changes on a Micro Level
  15. 15. Conventional Wisdom: Full on-site offset
  16. 16. “Plus Energy” before there was Passive House Plus and Premium
  17. 17. 20% 16% 64% Solar Heat Gains = 6,054 kWh/ a Internal Heat Gains = 1,457 kWh/ a Active Heating = 1,842 kWh/ a Heating a Passive House © TE Studio, Ltd.
  18. 18. 0 kWh/ a 2,500 kWh/ a 5,000 kWh/ a 7,500 kWh/ a 10,000 kWh/ a 12,500 kWh/ a 15,000 kWh/ a 17,500 kWh/ a 20,000 kWh/ a 22,500 kWh/ a 25,000 kWh/ a 27,500 kWh/ a 30,000 kWh/ a 32,500 kWh/ a PHPP Field PV Comp. Heating Appliances Lighting Plugloads DHW Ventilator/ Earthloop Well pump & Filtration Other aux. PV WI Home © TE Studio, Ltd. PHPP(House): 25 kWh/(m2 a) Measured(Site): 39 kWh/(m2 a) Outlook(Site): 30 kWh/(m2 a) Production: 45 kWh/ (m2 a) Average Wisconsin home (CERTS) 30,250 kWh/ a
  19. 19. Alternate Pathway: Offsite offset
  20. 20. Nordeast Nest Low Energy Home with Passive House Components
  21. 21. “Nordeast Nest” Project Team Architecture TE Studio Interior Design InUnison Design Structural Engineering
 Bunkers and Associates General Contracting
 RJ Stegora, Inc.
  22. 22. Exterior Walls Below-grade exterior walls: U-value: 0,146 W/(m²K); R-39 - 5/8 "[16mm] drywall - 11" [280mm] insulated concrete forms (ICF)
 [2.5" EPS (035) - 6" concrete - 2.5" EPS (035)] - 4" [102mm] EPS insulation (035) - Sto Flexyl Above-grade exterior walls: U-value: 0,111 W/(m²K); R-51 - 5/8 "[16mm] drywall - 2X6 Studs [140mm] with mineral wool batt insulation (040) - 3/4" OSB [19mm] structural sheathing, air barrier, vapor retarder - 12" I-Joist [305mm] with dense-pack cellulose insulation (039) - 1/2" [12mm] wood fiberboard sheathing (068) - Ventilated wood composite siding Slab Insulated concrete slab (and footings): U-Value = 0.219 W/(m²K); R-26 - 4” [102 mm] concrete slab - 6" [152 mm] EPS insulation (035) Roof Cold roof, insulated second floor ceiling: U-Value = 0.081 W/(m²K); R-70 - 5/8 "[16mm] drywall - 2X6 [140mm] framing; service cavity (086) - 3/4 "[19 mm] OSB air barrier, vapor retarder - 20 "[508] loose-fill cellulose (042) - Vented attic “Nordeast Nest” Building Envelope Specifications
  23. 23. Window Frames Optiwin, Alu2Wood Timber window frame with insulation and exterior aluminum cladding Uw-Value = 0.84 W/(m2K) [UIP = 0.148 Btu/(h ft² F)] Glazing Glas Trösch SILVERSTAR glaCE EUROFLOAT 4:/18/4/18/:4 Argon filled Ug-Value = 0.54 W/(m2K) [UIP = 0.095 Btu/(h ft² F)] g-Value (SHGC) = 53 % Entry Doors Doors of Distinction Custom made entry door. Wood frame, wood finish, polyisocyanurate foam insulation core Ud-Value = 0.79 W/(m2K) [UIP = 0.139 Btu/(h ft² F)] “Nordeast Nest” Building Envelope Specifications
  24. 24. Annual Heating Demand 32 kWh /(m2a ) [10 kBTU/(sf yr)] Heat Load 18 W/m2 [5.7 Btu/h/ft²] Design Heat Load 4 KW [13.8 kBTU/h] Site Energy Demand 44 kWh /(m2a ) [14 kBTU/(sf yr)] = 9,700 kWh/ a Source Energy Demand 101 kWh /(m2a ) [32 kBTU/ (sf yr)] for Heating, Domestic Hot Water, Auxiliary- and Plug Loads Will be much less in reality as electricity is sourced from wind power. Calculated with the PHPP “Nordeast Nest” Modeled Performance
  25. 25. The Project
  26. 26. Design Concept
  27. 27. Built Project
  28. 28. Construction Process from Demolition to Completion
  29. 29. Before
  30. 30. Airtightness 0.36 ACH50
  31. 31. HVAC Systems
  32. 32. Ventilation Zehnder, ComfoAir 350 (84% efficiency) Zehnder distribution system Effective heat recovery efficiency = 76% Heating, Cooling, Dehumidification 2 recirculating Fujitsu split air-to-air heat pump systems (first floor and second floor) with electric resistance backup post heater; system also provides cooling and dehumidification; sheet metal ductwork Mantis gas fireplace; direct vent; modulating: can augment heating on coldest days of the year; will be used throughout the winter for enjoyment. Electric resistance panel heaters (basement) Domestic Hot Water Boiler, IntelliHot i-200P tankless on-demand gas hot water heater with continuously insulated PEX tube distribution “Nordeast Nest” HVAC Systems
  33. 33. Nordeast Nest Electricity (Wind) 8,701kWh Gas 5,479kWh Average MN Home Electricity (Grid Mix) 9,600kWh Gas 25,600kWh 60% less energy Energy Footprint (Nordeast Nest)
  34. 34. Offset
  35. 35. Carbon Footprint MN 55418 #1 is Housing: Approx. 17 tons
  36. 36. 0 4.5 9 13.5 18 Average MN Home Nordeast Nest 0.6 17 Carbon Footprint in metric tonnes 96.5% less Carbon Carbon Footprint
  37. 37. Common Denominators: Sufficiency, Efficiency & Offset
  38. 38. Sufficiency and Efficiency
  39. 39. Passive House is the cornerstone of a sustainable building future. Plus and Premium are important, but we need to look at solutions in all arenas of energy to define the most suitable, feasible and effective way to create a low carbon built environment, and the right solution does not always happen on the roof above. Offset
  40. 40. Thank You! testudio.com intep.com passivehouseminnesota.org

×