Passive House Intro For Professionals
17
the passivhaus energy design standard a rigorous, voluntary building energy standard focusing on a high performance envelope with a resulting minimized mechanical system
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This is brief introduction to the Passive House method which I gave to an audience of energy efficiency design professionals.
Transcript of Passive House Intro For Professionals
the passivhaus energy design standard
a rigorous, voluntary building energy standard focusing on a high performance envelope with a resulting minimized mechanical system
the passivhaus standard
•Heating Energy Use < 15 kWh/m2yr (4,750 BTU/ft2yr)•Peak Heat Load < 10 W/m2 (3.2 BTU/hr.ft2)•Airtightness: n50 < 0.6 ACH (a typical residence is 5)•Total Primary Energy Use < 120 kWh/m2yr (38,000 BTU/ft2yr)
Concept Origin: “Tunneling through the cost barrier” –Amory Lovins
the passivhaus concept
First Minimize Losses…•Superinsulated & Airtight Envelope without thermal bridges•Heat Recovery Ventilation, >80% efficiency
Then Maximize Gain…•Passive Solar Gain (often optional)•Thermal mass (commensurate with solar gain)
the passivhaus concept
the energy modeling design tool
The “Passive House Planning Package” (PHPP) •An Excel-based steady-state energy design program•Extremely detailed•Calculations are transparent and customizable
superinsulation without thermal bridges
Windows:Triple-pane with insulated framesInset within wall profile
superinsulation without thermal bridges
Miscellaneous Details…
simplified mechanical system
The “magic box”
passivhaus development…
CEPHEUS Project of 1999-2000
passivhaus development…
passivhaus development…
passivhaus arrives in the US…
“passive house” development in the US
12” Trusjoist TJI’s as wall studs
the passive house & affordable housing
www.e-colab.org
the passive house & custom housing
Passive Conservation(Envelope Investment)
Active Generation(Solar Collector Investment)
Where is the optimum point on this spectrum?
Taos, New Mexico
passive house news…
October 19, 2007… Winner of the Solar Decathalon:Technische Universität Darmstadt
passive house news…
Presentations by:Harold Orr, Canadian Research CouncilBill Rose, Building Research Council, Univ. of IllinoisJohn Broniek, IBACOSMarc Rosenbaum, Energy SmithsManfred Brausem, Architect
