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2008 Study of Architecture Professionals on the Subject of Smart Glass, Daylighting and Clean Technology Part2
Published: 2015-6-24 14:26:19

buildings being designed or in use. The item overwhelmingly
selected most often was energy consumption, mentioned by
82.6% as one of their three items. Chart 1 summarizes citation
levels for the six most important items, many of which
are of an economic nature.

Forward-looking attitudes regarding sustainable design are
very strong. When asked to comment on the expected change
in the next five years in the proportion of United States architectural
design work that involves sustainable design, 73.6%
expect this proportion to increase greatly.
Respondents were asked again to consider expected trends
related to sustainable architectural design over the next five
years. Not surprisingly, 99.3% agreed with the statement that
“demand for sustainable buildings will increase” over that time
period. Levels of agreement were high as well with regard to
expectations that: 1.) use of passive solar energy strategies (e.g.
those using conventional windows or skylights) will increase
(94.3%), 2.) the prevalence of buildings codes or standards
mandating sustainable building will increase (93.3%), 3.)
returns on investment in sustainable design will increase
(93.0%), 4.) demand for solar control building products will
increase (92.5%), and 5.) use of active solar energy strategies
(e.g. photovoltaics) will increase (88.6%).
Architectural Glazing and Daylighting
Approximately three-quarters of those surveyed claim that
they have evaluated, recommended or specified architectural
glazing materials in the past year. When asked to identify the
three most important items pertaining to glazing for architectural
projects, energy efficiency (cited by 81.1% of the
sample) and daylighting (cited by 73.1%) are clear leaders.
As Chart 2 exhibits, while aesthetics ranks third overall, it

falls considerably short of energy efficiency and daylighting,
suggesting that for these professionals, the desire for visually
appealing architectural glazings may often be superceded by
the need to lower energy consumption.

With regard to daylighting, respondents were asked to rank the
importance of four general items that pertain to daylighting
in architectural projects. Consistent with the results discussed
earlier regarding the importance of items in sustainable buildings,
respondents name energy savings and occupant health
and well being as the two most important items. These are
followed by aesthetics and organizational productivity.
The professionals surveyed were also asked to identify the
three most important performance benefits of daylighting
products and systems. The results, summarized in Chart 3,
signal a strong bias toward the desire for positive economic
impact from daylighting.
Smart Glass
Attitudes toward smart glass are very positive and suggest
the potential for accelerating market adoption. Among the
architecture professionals surveyed in this study, 75.6% said
they were aware of smart glass prior to the study. Interest in
smart glass appears to be growing, with 10.4% and 2.4% of
those surveyed claiming to have evaluated, recommended or
specified smart glass for a commercial or residential project,
respectively. This is an increase from similar metrics observed
for a 2007 study of LEED Accredited Professionals. In that
study, 6.6% and 2.0% of the professionals surveyed said they
or their firm had evaluated, recommended or specified smart
glass for commercial and residential projects, respectively



[12]. Looking ahead, when asked about their likelihood to
recommend or specify smart glass for a project, 87.6% said
they would be highly likely or somewhat likely to do so if the
price for smart glass is reasonable and it meets performance
specifications.

Respondents were presented with twelve performance attributes
of smart glass and asked to identify the three most
important to clients who would have an interest to integrate
smart glass into an architectural daylighting system. Energy
efficient operation of the smart glass panel was the leading
attribute (cited by 28.6%), followed by solar heat gain control
that varies with the tint level of the smart glass (26.5%),
elimination of the need for window treatments and coverings
(24.3%), ability to change the light transmission of the glazing
quickly (18.7%) and integration with building intelligence
systems (16.7%).
These perceptions appear to drive what are reasonably strong
beliefs about the potential returns on investment when daylighting
systems integrate smart glass. Under the assumption
that the incremental costs for smart glass are reasonable,
39.8% of those surveyed expect returns on investment from
smart glass will be better than those from other sustainable
products and systems of which they are aware. Fully 73.1%
expect that ROI levels will be better or about the same when
compared to these other products and systems.
CONCLUSIONS
The twenty-first century has ushered in a period of pressing
threats to the environment, rising energy costs, and a firming
resolve that sustainable architectural design can yield dramatic

gains in long-term resource preservation and overall quality
of life. Supporting all of this is the growing portfolio of clean
technology products and processes that not only advance
sustainable ideals but do so profitably.
A convergence is taking place, where societal and economic
forces are meeting powerful technologies that offer unprecedented
performance features and open new opportunities for
innovative solutions. Smart glass is among these technologies.
It is in the earliest stages of its life cycle, but the underlying
daylighting benefits that it can deliver – control over light,
glare and heat passing through glazings – are substantial
and address a wide range of sustainability objectives. While
awareness levels of smart glass are reasonably high among
those surveyed, specification rates compared to conventional
glazings remain modest. This is not an atypical state for a
new category of technologies, and it is likely that as production
volumes increase, costs for smart glass will decline and
adoption rates will rise. A new, exciting and incredibly challenging
era has arrived, and it’s one where smart glass will
offer architecture professionals and their clients innovative
and effective approaches to sustainability.
REFERENCES
1. United Nations World Commission on Environment and
Development, Our Common Future, Oxford University
Press, New York, 1987.
2. U.S. GBC Research Committee, A National Green Building
Research Agenda, U.S. Green Building Council,
November 2007 (Revised February 2008).
3. Cleantech Network, LLC, Cleantech Defined, Retrieved
from http://cleantechnetwrk.com on December 6,
2007.
4. J. Thaler, “Global Cleantech Spending Set for 14% Growth
in 2007; Asia Ahead of U.S.,” Business Wire, May 31,
2007.
5. A. Sweeney, “2006 North American Cleantech Venture
Investment Totals $2.9 Billion,” Business Wire, January
11, 2007.
6. J.G. Dorn, “Solar Cell Production Jumps 50 Percent
in 2007,” Earth Policy Institute, Retrieved from www.
earth-policy.org on February 27, 2008.
7. A.E. Braun, “Photovoltaics Ready for Next Big Market,”
Semiconductor International, February 20, 2008.
8. C.F. Reinhart, J. Mardaljevic and Z. Rogers, “Dynamic
Daylight Performance Metrics for Sustainable Building
Design,” Leukos, 3 (1), 7-31, 2006.



9. International Energy Agency, Energy Conservation in
Buildings and Community Systems Programme, Daylight
in Buildings: A Source Book on Daylighting Systems and
Components, Report of IEA SHC Task 21 / ECBCS Annex,
July 29, 2000.
10. J. Loveland, “Daylight By Design: Studies From the
Betterbricks Daylighting Lab in Seattle Illustrate How
Daylight Can Be Integrated Into Site And Building Design,”
Lighting Design + Application, October 2003.

11. B.L. Collins, Windows and People: A Literature Review.
Psychological Reaction to Environments With and Without
Windows, National Bureau of Standards, Washington
D.C.
12. G.M. Sottile, “2007 Study of United States LEED Accredited
Professionals on the Subject of Smart Glass,”
50th Annual Technical Conference Proceedings of the
Society of Vacuum Coaters, pp. 32-35, 2007.
13. The Freedonia Group, “Advanced Flat Glass to 2010,”
2006.



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