Advance Window Technolgies: Overview and Benefits

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Presentation by Brandon Tinianov, Serious Materials

On Thursday June 11th, the Alliance to Save Energy hosted a webinar for Alliance Associates and others interested in opportunities for window energy efficiency. Moderated by the Alliance’s Vice President for Programs Jeff Harris, speakers representing research, industry and low-income weatherization highlighted options that can minimize window heat loss far beyond common practice. The focus was on high-end R-5 window technologies, but lower-cost products, such as low-E storm windows, and the specific needs of low-income weatherization programs were also discussed. The five presenters’ different perspectives converged in the message that there is a great need for more energy-efficient windows and that advanced technologies and their integration in incentive and weatherization programs can bring far greater savings within reach.

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Advance Window Technolgies: Overview and Benefits

  1. 1. Serious Materials Windows are the largest opportunity for improvement • We develop and manufacture green building materials that save energy, save money, improve occupant comfort, and aggressively address climate change • Super energy efficient residential windows & commercial glass Our Mission: to reduce carbon dioxide emissions by one billion tons annually
  2. 2. Elements of a High Performance Window Foam insulated frame Dual or triple perimeter seal Warm edge spacer Inert gas fill Internal films/panes Wide insulated glass pocket Wide insulated glazing unit Low conductivity frame Wet glazing Multiple layers of weather stripping Our Mission: to reduce carbon dioxide emissions by one billion tons annually
  3. 3. Heat transfer models of two windows Composite spacer Metal spacer Aluminum frame Fiberglass frame Typical Low-E Aluminum Window Advanced R-7 Window Note: Modeled via THERM 6.1 Simulation software, Lawrence Berkeley National Lab Our Mission: to reduce carbon dioxide emissions by one billion tons annually
  4. 4. Residential High Performance Windows are Cost-Effective $4,500 Value of $4,000 lead abatement? House: $3,500 CO2 reduction - New York City; double pane; gas heating - 2 story, 1200 sqft brick house $3,000 - 180 sqft windows equally distributed - “Typical” Installation & insulation, HVAC, shading, leakage $2,500 materials Replacement windows: - R-5, SHGC-0.24 $2,000 Energy bill savings Energy prices: - electricity: 2008 Jan-Aug average $1,500 - gas: 2005-07 average Window retail cost - escalation: 3%/yr real $1,000 Greenhouse value: $30/t CO2 Replacement cost: - $12/sqft for windows $500 - $5/sqft for installation Life: 20 years $- Discounted present Installed cost value of savings Note: Modeled via RESFEN software, Lawrence Berkeley National Lab Our Mission: to reduce carbon dioxide emissions by one billion tons annually
  5. 5. Residential High Performance Windows are Cost-Effective $5,000 $4,500 $4,000 $3,500 $3,000 $2,500 $2,000 $1,500 $1,000 $500 $- Note: Modeled via RESFEN software, Lawrence Berkeley National Lab Our Mission: to reduce carbon dioxide emissions by one billion tons annually
  6. 6. 25+% Annual Energy Savings - Office Building (compared to double clear glazing) 35% Phoenix Washington DC Chicago Seattle 30% Atlanta New York 25% 20% 15% 10% 5% 0% Dual Low-e R-5 R-7 Note: Modeled via EnergyPlus software, US Department of Energy Our Mission: to reduce carbon dioxide emissions by one billion tons annually
  7. 7. < 2 yr Simple Payback Period - Office Building (compared to double clear glazing) 1.4 New York 1.2 Seattle Phoenix Washington DC 1 Simple Payback Period [Years] Chicago Atlanta 0.8 0.6 0.4 0.2 0 Dual Low-e R-5 R-7 Note: Modeled via EnergyPlus software, US Department of Energy Our Mission: to reduce carbon dioxide emissions by one billion tons annually
  8. 8. 30-Year Savings of $7M - Office Building (compared to double clear glazing, 7% fuel escalation, 2.8% discount rate) $9 Atlanta $8 Chicago $7 Washington DC Seattle 30-Year Savings [millions of $] Phoenix $6 New York $5 $4 $3 $2 $1 $0 R-5 Dual Low-e R-7 Note: Modeled via EnergyPlus software, US Department of Energy Our Mission: to reduce carbon dioxide emissions by one billion tons annually
  9. 9. • Advanced window technology includes – Low conductivity frames, three or more panes, novel spacers • In residential applications R-5 to R-7 windows are cost effective • In commercial applications (office example), – Energy savings of 25+% – Simple payback in <2 years – Lifetime savings ~$7,000,000 Our Mission: to reduce carbon dioxide emissions by one billion tons annually
  10. 10. Dr. Brandon Tinianov, LEED AP CTO, Serious Materials btinianov@seriousmaterials.com www.SeriousMaterials.com www.SeriousWindows.com Our Mission: to reduce carbon dioxide emissions by one billion tons annually

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