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

QUESTIONS?

Michelle Apigian

ICON Architecture

mapigian@iconarch.com