PASSIVE HOUSE - Local Initiatives Support Corporation...passive house: the world’s most energy...
Transcript of PASSIVE HOUSE - Local Initiatives Support Corporation...passive house: the world’s most energy...
PASSIVE HOUSE: THE WORLD’S MOST ENERGY EFFICIENT PERFORMANCE STANDARD
WHAT IT IS THE HIGHEST ENERGY STANDARD
MA GOALS: Commitment to 80% reduction by 2050
WE CAN INFLUENCE THE FUTURE
WHY ARE BUILDINGS SO IMPORTANT?
PASSIVE HOUSE: THE WORLD’S MOST ENERGY EFFICIENT PERFORMANCE STANDARD
Goal: lower consumptionRadically reduce energy demand
Requirements: measurable criteriaMeet a specifically low energy budget
THE STANDARD How does this Compare?
WHAT IT IS NOT HOLISTIC SUSTAINABLE DESIGN: LEED, Living Building Challenge
Site18%
Materials13%
Water12%
Location8%
Energy32%
IEQ17%
WHAT IT IS FOUNDATION FOR NET ZERO :
Minimize Load + Produce
#1 #2
with withPassive House Renewable Energy CONSUMPTION GENERATION
EXAMPLES International Commercial
EXAMPLES International School/University
EXAMPLES International Multifamily/Hotel
EXAMPLES International Retrofit
EXAMPLES US Multifamily
EXAMPLES US Commercial/Educational
ROCKY MOUNTAIN INSTITUTE
CENTER FOR DESIGN RESEARCH – UNIV OF KANSASCORNELL TECH RES. HALL - NY
THE STANDARD Radical Simplicity
Credit: Albert Righter Tittmann Architects
THE STANDARD Measurable Criteria
= Miles Per Gallon for the Building
= Durability
= Carbon Footprint
Annual Space Heating/Cooling Demand
Airtightness
Primary Energy Demand
Heating and Cooling makes up nearly 50% energy Demand
THE STANDARD Measurable Criteria
5.3 kBTU/ftsq/yr2.9 kBTU/ftsq/yr
4.4 BTU/ftsq/hr4.2 BTU/ftsq/hr
.05 cfm/GSF @ 50 pa
.08 cfm/GSF @ 75 pa
38 kBTU/ftsq/yr6200 kWh/person
*climate specific: Boston
4.75 kBTU/ftsq/yr4.75 kBTU/ftsq/yr
.6 ACH
38 kBTU/ftsq/yr38 kBTU/ftsq/yr0
Annual Space Heating Energy DemandAnnual Space Cooling Energy Demand
Peak Heat Load Peak Cooling Load
Airtightness
Primary Energy Demand CommercialPrimary Energy Demand Residential
THE STANDARD How does this Compare?
5.3 kBTU/ftsq/yr2.9 kBTU/ftsq/yr8.1 total
*climate specific: Boston
Annual Space Heating Energy DemandAnnual Space Cooling Energy Demand
Office: 33 kBTU/ftsq/yr
K-12: 29 kBTU/ftsq/yr
Res: 24 kBTU/ftsq/yr
**3-4 TIMES**0
THE STANDARD How does this Compare?
.05 cfm/GSF @ 50 pa
.08 cfm/GSF @ 75 pa
Airtightness
**5 TIMES**0
.6 ACH
THE STANDARD How does this Compare?
38 kBTU/ftsq/yr6200 kWh/person
Primary Energy Demand CommercialPrimary Energy Demand Residential
Office: 148 kBTU/ftsq/yr
K-12: 141 kBTU/ftsq/yr
Res: 68 kBTU/ftsq/yr
**2-3 TIMES**0
BENEFITS
• Reduced Carbon Footprint: Radically low energy• Comfortable: No drafts or temperature swings• Healthy: High Quality, Continuously filtered Air• Resilient: Extreme Thermal Stability• Affordable to Operate: Low Utility Bills for life
HOW DO YOU GET THERE?
Thermal Control
Air Tightness
Mechanical Systems
Lighting/Appliances/Plug Loads
Drive Down Loads
Eliminate InfiltrationTest
Minimize thermal bridgingOptimize solar heat gain
Balanced Ventilation
Plan for Renewables
HOW DO YOU GET THERE? Drive Down Loads
Thermal Control
Air Tightness
Brooklyn Hts Passive HouseTaken on a Freezing night, Winter 2012
HOW DO YOU GET THERE? Thermal Control
BUILDING INHERENT VALUE Re-Prioritize Costs
More $ - EnvelopeLess $ - Mechanical Systems/ductworkAlways Saving- Low Operational Costs for the life of the Building
BUILDING INHERENT VALUE Re-Prioritize Process
Integrated Design: Parts work together to maximize the wholeBuilder as Partner: Attention to the CRAFT of buildingTesting/Verification: To ensure execution/performance meets the intentCommissioning/Reporting: Hold buildings accountable
BUILDING INHERENT VALUE Re-Prioritize Values
Think Long Term: What is the life cycle of a building?Policy and Financing: Incentives to help bridge the resource gapBuild for People: Healthy, Comfortable, Resilient