In 2010 in the commercial building sector, conduction through windows accounted for 1.60 quads of lost energy used for space heating, but offset cooling loads by 0.3 quads and solar heat gain through windows accounted for 1.38 quads of energy lost from space cooling, but offset heating loads by 0.97 quads. Recent advances in window technologies for both reductions in conduction loses and solar gains can help in tremendous energy savings in commercial buildings.
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TOOLSElectrochromic Windows Case StudyElectrochromic (EC) windows can adjust their tint dynamically in response to environmental conditions. This ability of EC windows helps in the reduction in visual discomfort caused by glare from direct solar radiation. The case study report prepared by LBNL demonstrate the working of EC windows at the Donna Land Port of Entry.Electrochromic and Thermochromic Windows Case StudyElectrochromic (EC) windows can adjust their tint dynamically in response to environmental conditions. Thermochromic windows passively switch when the surface temperature of the glass changes. The windows change from a clear to dark tinted state while remaining transparent at all times.High Performance Window Film Case StudyThe case study provides the performance of EnerLogic 35 window film which has a high solar heat rejection and superior low-e performance. This film can provide year-round performance without excessively reducing visible light transmittance.Building Envelope Webinars for Windows Webinar CollectionThis toolkit features webinars presented by the Better Buildings Alliance and Oak Ridge National Laboratory that focus on advancing the latest innovations for windows in commercial buildings.In the inaugural meeting of the Building Envelope Tech Team, participants discussed goals, new resources, and technologies to improve the energy efficiency of walls, windows, and roofs.