Burnham-Moores Center for Real Estate University of San Diego Master of Science in Real Estate Presentation. Glass of the Future.

Transcription

1 Burnham-Moores Center for Real Estate University of San Diego Master of Science in Real Estate Presentation Glass of the Future February 26, 2013 Tom Bobo Please do not quote or use this presentation without appropriate recognition. Thank you!

2 Background Window Glass: 30% of energy used to heat and cool is lost Allows too much heat when you don t want it Doesn t allow enough when you do want it Spectrally selective glazing

3 Metrics for Glass Solar Heat Gain Coefficient (SHGC) Transmitted Light % (Tvis or VT) Emissivity U-Factor Photo: SageGlass, Inc

4 Current Window Technology Low-E Low-emittance (Low-E) coatings are microscopically thin, virtually invisible, metal or metallic oxide layers deposited on a window or skylight glazing surface primarily to reduce the U- factor by suppressing radiative heat flow.

5 Current Window Technology (cont d) High SHGC Moderate SHGC Low SHGC

6 How Low-E Windows Work Image:

7 State of the Art: Smart Windows DOE estimates saving > $10B annually Types of Smart Windows: Thermochromic Electrochromic Image: Sage Electronics, Susan Fleck Photography

8 Pleotint, LLC Thermochromic Image:

9 SageGlass Electrochromic

10 SageGlass Electrochromic

11 SageGlass Electrochromic

12 View, Inc. Electrochromic Image:

13 A Zero Energy Window? US Department of Energy Prototype

14 Benefits Lawrence Berkley National Laboratory cites that conventional windows account for 30% of heating & cooling energy $10B in annual energy costs LBNL believes SageGlass has the potential to reduce building heating and air conditioning equipment size by up to 25% SageGlass could reduce overall cooling loads up to 20% by lowering peak power demand and reducing lighting costs by up to 60%

15 Policy Factors In 2010, the DOE offered a $72M loan guarantee to Sage Electronics LEED Points: Energy & Atmosphere: Optimize Energy Performance Sustainable Sites: Light Pollution Reduction Indoor Environmental Quality: Thermal Comfort-Design, Daylight and Views-Daylight, Controllability of Systems Thermal Comfort

16 Summary Electrochromic offers more control than Thermochromic Economies of scale and price What s on the horizon? Zero U-Factor Windows Windows that double as solar panels

17 Thank you

18 References Efficient Windows Collaborative, Glossary: Efficient Windows Collaborative, Low E: Efficient Windows Collaborative, U Factor: LEED User, Glossary: Pleotint, LLC, Suntuitive: Sage Electronics, How it Works: Sage Electronics, LEED Credits: The National Fenestration Rating Council: US Department of Energy, Marking Windows Smarter: US Department of Energy, EERE Financial Opportunities: US Department of Energy, Zero Energy Window Prototype: View Glass, Commercial Brochure: