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Integrated Policies and Technology to Promote Energy Efficiency in Buildings

Integrated Policies and Technology to Promote Energy Efficiency in Buildings . Marc LaFrance, US DOE . 1 November 2011. Brazil Building Envelope Workshop Sao Paulo, Brazil. Electricity Use in Buildings is High . Brazil ~ 47 percent . Source: APEC and IEA Database .

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Integrated Policies and Technology to Promote Energy Efficiency in Buildings

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  1. Integrated Policies and Technology to Promote Energy Efficiency in Buildings Marc LaFrance, US DOE 1 November 2011 Brazil Building Envelope Workshop Sao Paulo, Brazil

  2. Electricity Use in Buildings is High Brazil ~ 47 percent Source: APEC and IEA Database

  3. Buildings Energy Efficiency: Large % of CO2 Savings Potential Energy efficiency measures represent most of the no-cost options BTP believes opportunities for Buildings are even greater than predicted

  4. Building Consumption – Envelope Relationship Has Impact on 57% of Loads 1/7 US Economy • 133 Billion $/yr • 13.9% US Energy • 3.5% Global Energy

  5. Thermal Envelope R&D • Next Generation of Attic/Roof System to save 50 Percent Energy • Advanced walls to reach R20 (U = 0.28 SI) in 3.5” (9cm) cavity, exterior insulation systems, R30 (U = 0.19 SI) total wall exterior insulation systems • New Material Development • 100 R&D Award in 2009 for phase change insulation • Higher performing foams and aerogels • Dynamic membranes • Advanced cool roofs

  6. Next Generation of Windows • Highly Insulating • Goal U value 0.10 (SI U value 0.56) • Possible vacuum glazings • Dynamic solar control • Passive heating and dramatic peak cooling reduction, SHGC 0.53 – 0.09 • Market ready, prices will drop with more investment • Many new projects underway, competitive market in 2012 - 2014 Prototype – Concept Window (Highly Insulating and Dynamic U Value 0.18 (SI U value 1.0) SHGC 0.04 – 0.34) Low cost unsealed center lite

  7. What is a Cool Roof ?Research Roadmap • Research Plan • Buildings level • Urban Level • Global Level (major climate change mitigation potential) • International Activities • Draft Roadmap is available for stakeholder review www.eereblogs.energy.gov/buildingenvelope

  8. Conduct Enabling Research • Test protocols • Design guidelines • Modeling tools • Industry standards • Education Materials • International Collaboration

  9. Comprehensive Window Simulation Software - Publicly Available Optics THERM (Window (Window Glass) Frame) IGDB(Specular Glass Data Source) CGDB(Complex Glazing Data Base) WINDOW (Whole Window) RESFEN (Whole BuildingResidential) COMFEN Design /Simulation Tools DOE-2, EnergyPlus Radiance (Whole BuildingCommercial) NFRC Ratings and Labels • Design tools for advanced products • ISO 15099 Compliant • NFRC Ratings http://windows.lbl.gov/software

  10. Façade Design Tool http://www.commercialwindows.org

  11. Example – Integrated Efficiency Policies for Windows Volume Purchases Tax Credits/ Utility Rebates Voluntary Building Codes Building America R&D / Production Engineering Policies - Commercialization Path

  12. Promoting Investment in Advanced Building Materials and Components • Cannot effectively implement building codes without robust product rating and certification • Cool roofs are a high priority for hottest regions • Goal: Achieve 100 percent low-e glass sales globally • Use passive envelope technologies to reduce air conditioning load growth in hot climates, may not need air conditioning if envelope is pursued • Envelope efficiency packages for existing and new buildings: low-e glass, window films, cool roofs and walls, radiant barriers, insulation, cool pavements, etc.

  13. Infrastructure Supports Policies Leading to Low Energy Buildings Major Policy Areas for Developing Countries – Need To Develop Product Testing and Rating Infrastructure ZEB Voluntary – Energy Star, Incentives, Retrofits Mandatory Policy – Building Codes, Labeling Infrastructure – Product Ratings, Product Availability, Researcher /Modeling Training

  14. Key Elements are Interrelated and Work to Achieve Results

  15. US Building Envelope Resources www.eereblogs.energy.gov/buildingenvelope

  16. Final Remarks • Envelope technologies can play a major role in curtailing large growth in electricity demand • Infrastructure and integrated policies – can play a major role in encouraging new technologies in all economies • Greater attention to building code implementation with design tools, training, and product testing/ rating will lead to better building envelopes that reduce energy, peak electricity demand, and carbon emissions

  17. Contact Information P Marc LaFrance, CEM Technology Development Manager Building Technologies Program Office of Energy Efficiency and Renewable Energy US Department of Energy marc.lafrance@ee.doe.gov 1-202-586-9142 Fax 1-202-586-4617 www.eere.doe.gov www.eereblogs.energy.gov/buildingenvelope

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