DESCRIPTION:
Arches National Park in Moab, Utah
is a typical federal park equipped with outdated and inefficient lighting fixtures which
utilize T-12 fluorescent lamps and standard magnetic ballast. Fixture types consisted of
2X4 troffers, 8' and 4' strip fixtures.
OBJECTIVE:
The goals set forth were two fold. First to reduce energy
consumption in accordance with the Energy Policy Act of 1992 and Executive Order 12902;
and second, to increase illumination and the quality of light. Areas of designation were
the visitors center and administrative areas.
PROCEDURE:
Facility administrator, Frank Darcey, sought U.S. Energy Sciences’
experience and dedication to developing recommendations which complied with their
objectives. With Frank’s assistance in providing key data on the existing system, the
recommendations were determined by gathering information from a few follow-up phone calls.
RECOMMENDATIONS:
Existing 2X4 4-lamp surface mount and troffer fixtures were
retrofitted with complete conversion packages consisting of two T-8 lamps, an electronic
ballast, and a specular aluminum reflector.
Eight foot strip fixtures with three 8' T-12 lamps were replaced with
four 4' T-8 lamps, an electronic ballast and specular aluminum reflector.
Four foot strip fixtures with two lamps were replaced with one 4 foot
T-8 lamp, an electronic ballast and a specular aluminum reflector.
In addition, sixty-six surface mount fixtures that were in bad
condition were replaced with new 15" 2-lamp energy efficient wrap fixtures.
MATERIAL:
All fixtures and conversion packages were purchased through
U.S. Energy Sciences’ General Service Administration (GSA) Multiple Award Schedule. The
schedule, with an available line item at $200,000, allowed for ease in purchasing and delivery within a short amount of time. U.S. Energy Sciences, Inc. offers the highest quality components on the market
with all fixtures and conversion packages. Watt Stoppers were additionally
installed to further reduce consumption in infrequently occupied areas. In order to take
advantage of extensive warranties and improved engineered systems, the following items
were selected for installation:
Lamps: Osram
Sylvania’s "Octron 700" series T8, 32 watt lamps with a color
rendering index of 75 were chosen. The initial lumens rated at 2850 and rated at 20,000
hours life on a 12 hour duty cycle.
Ballast: To take advantage of Osram’s
five year warranty, Osram Sylvania’s "Quicktronic" electronic
ballast were selected. Osram’s ballast exceeds government standards for thermal
protection, sound rating, harmonic distortion, crest factor, power factor, ballast
efficiency and specifically dedicated to operate T-8 lamps for optimal performance.
Reflectors: U.S. Energy Sciences, Inc., an ISRA member, custom fabricated all reflectors
from ALCOA’s Everbrite aluminum product specified at 86 percent Total Reflectivity,
95 percent Image Clarity with a 25 year warranty.
RESULTS:
Economic: The recommendations implemented resulted in a 64% reduction in kWh
for the 104 fixtures retrofitted or upgraded. The project cost of $6,505 resulted in an
annual cash saving of $3,799 offering a 58.4 percent return on investment. Environmental:
It was rewarding to know that as a result of this lighting conversion the annual
elimination of 95,000 pounds of carbon dioxide and 120,910 grams of sulfur dioxide were
realized. U.S. Energy Sciences, Inc. is a proud participant
in EPA’s Green Lights Program.
