USGlass Announces 2010 Green Design Award Honorees
November 16, 2010
USGlass Magazine has announced the winners of its 2010 Green
The winners are:
- Active Glazing Category - National Renewable Energy Laboratory's
Research Support Facility in Golden, Colo.;
- Retrofit Category - Empire State Building in New York; and
- New Construction Category - Manitoba Hydro Place in Winnipeg,
Active Glazing Category
National Renewable Energy Laboratory's Research Support Facility
in Golden, Colo., was created to be one of the most energy-efficient
and healthy workplaces in the world. RNL in Denver designed the
net-zero energy building to produce as much power as it consumes.
J.R. Butler Inc. in Denver served as the glazing contractor for
the project. At least eight different glass types were specified,
including electrochromic glazing from SAGE Electrochromics and triple-pane
insulating glass units from Viracon. Some of the 600 high-performance
windows provided by Wausau Window and Wall Systems also feature
between-glass "light louvers" to push light deeper into
the interior. Every workstation has 100 percent daylighting, controlled
by tintable glazing in some cases and custom, exterior "bonnet"
sunshades in others. At night, the building's climate sensors automatically
open the clerestory windows to purge unwanted heat from the building,
naturally cooling it for the next business day.
window upgrade at the Empire State Building in New York was one
part of an integrated project that is expected to reduce energy
use by 38 percent and save $4.4 million per year in energy costs.
Unique to this project, all 6,500 windows in the building was re-used
rather than removed and replaced with new glass. Serious Materials
set up an approximately 5,000-square-foot production facility on
the fifth floor of the Empire State Building to do this. As the
original insulating glass was removed from each window frame each
night, it was taken to the production facility where workers would
unseal the insulating glass and clean both pieces of glass. Next,
workers would assemble inside the original uncoated insulating glass
a coated film from Southwall Technologies Inc. The insulating performance
of the updated IGUs increased the R-value from about R-2 to between
R-5 and R-8, depending on the location/orientation of the window,
while also reducing the solar heat gain by 50 percent. The original
thermally broken aluminum frames were updated with new weather-stripping
and hardware to improve the overall infiltration rates. Finally,
each unit was resealed, and the "new" IGU was put back
in the original window frames.
New Construction Category
Hydro Place in Winnipeg, Manitoba, integrates a variety of sustainable
technologies to create a "living building" that dynamically
responds to the local climate. A biodynamic double façade
is the building's pubic face and also one of its most vital sustainable
components. Kuwabara Payne McKenna Blumberg Architect in Toronto
and Smith Carter Architects and Engineers in Winnipeg designed the
building, while Fergson Neudorf Glass Inc. in St. Catharines, Ontario,
and Border Glass and Aluminum in Winnipeg served as the glazing
contractors. The building's double façade curtainwall system
is comprised of an insulating glass outer wall with a monolithic
inner wall, separated by a three-foot buffer zone. A low-iron glass
substrate, provided by PPG Industries, with Viracon's VE-85 coating
offers both high light transmission and powerful solar energy control,
with a visible light transmittance of 80 percent that allows daylight
to penetrate the floor-to-ceiling glazing and reach deep into the
building's core. Its low U-values reduce radiant heat transfer and
improve the building's overall energy performance. Automated exterior
wall vents in the outer curtainwall (controlled by the building
management system) allow fresh air into the building, year-round.
Manually operated windows on the interior curtainwall allow employees
to control their individual environment, which studies have shown
enhances employee well-being and productivity while reducing absenteeism.
About the Judges
Readers of the USGNN.com newsletter nominated projects for
this year's awards. This year's judges included Benedict Tranel,
architect and regional technical director at Gensler in San Francisco;
Kerry Haglund, LEED AP, senior research fellow with the Center for
Sustainable Building Research at the University of Minnesota; and
Gregory A. Demirdjian, LEED AP BD+C, with glazing contractor MTH
Industries in Chicago. In selecting the buildings they felt best
conveyed how glazing can contribute to a building's overall "greenness,"
the judges considered a variety of factors. Information was provided
by the nominees, including building certifications; glass type;
framing type; the glazing products' integration with other building
components; the glass choice's contributions to cost savings; "green"
production and/or installation processes; and other information
that are unique to each building.
Look to the November 2010 issue of USGlass Magazine for
information about all of the finalists and honorees.
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