MARCH 2015 \ BUILDING DIALOGUE \
43
control system possible. The lighting
system in the RSF consumes less than
0.2 watts per square foot and accounts
for 6 percent of the total energy used by
the building. Rachel Fitzgerald of RNL
was the lighting designer of record for
the RSF, and Juliana Ruffalo of Illumina-
tion Systems teamed withWeifield to suc-
cessfully implement this design.
Setting the Course for the Future
Fast forward to 2014: Weifield is currently
designing a 120,000-sf office building that
will use an all-LED solution. This new office
building will easily achieve a watt density of
0.3 watts per sf. The new office building is not
designed to maximize daylight harvesting and
we do not have an elaborate lighting control
scheme – yet, we are achieving watt densities
very close to the watt density of the RSF. For
another project, we are considering a foot-wide
LED fabric to light the building corridors. LED
fixtures capable of producing 120 lumens per watt
are commercially available right now. According to
colleagues in the industry, LED light sources in research fa-
cilities are achieving 300 to 700 lumens per watt.
The speed of the LED evolution is breathtaking and, ap-
parently, has just begun. Our vision and understanding of
how a light fixture looks and operates is changing. This is
a wonderfully exciting time to be part of building lighting
design.
I can hardly wait to see how lighting will evolve in the
next 10 years!
\\
jdent@weifieldgroup.comTRENDS
in Lighting Design
NREL Research Support Facility
Comprehensive
art consulting that serves
strategic objectives &
aesthetic purposes
FORSEARTCONSULTING.COM |720.519.6484
corporate | hospitality | healthcare
art: Kelly Schurger | location: Fox Rothschild LLP