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ESI
Energy
Systems Inc.
1570 Brown Ave.
Cookeville, TN
38501
Engineering Contact:
Bob Southerlan
615-969-7659
Fax:
931-528-7997
Sales
Contact:
David Regen
615.292.9382
Email
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| © copyright 1998-2005 by DII and ESI. |
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| Corporate Mission Statement |
To design and market a performance-oriented, energy accountable
approach in reducing the energy use of buildings.
Corporate Description, History, and Technical Position in the Marketplace
Energy Systems, Inc. (ESI) is a research/development and design/build contracting
firm located in Cookeville, Tennessee. The firm specializes in:
- thermal envelopes, and
- heating, ventilating and air conditioning (HVAC)
systems
for buildings. The company uses technology
and engineering methodologies developed by its founder starting in the late
'50s. This development was augmented by a seven-year tenure of the founder
working in high-tech aerospace research and development in the '60s.
The first demonstration of the technology was 'in 1967 in a 2,600-square
foot ranch style home in Winchester, Tennessee. The measured heat loss of
this home was about 50 percent of what was calculated using then current
methods. Four more homes were built in this development phase, culminating
in 1972 with a 4,900-square foot, multi-story colonial style home. The energy
use of this all electric home was so low that the utility supplier changed
the electric meter after the first winter!
In the decade of the '70s, marketing of the combined thermal envelope/HVAC
systems technology was begun in Cookeville, Tennessee. Energy use of the
HVAC systems 'in each building was warranted not to exceed a predetermined
amount. This established the element of energy accountability. Utility meters
were used to meter separately the energy use of each HVAC system to verify
conformance to the warranties. This concept and the
data acquired became the foundation for a multi-state marketing venture recognized
in a 1981 NASA publication "Spin-Off."
A transition of the technology to commercial buildings also occurred in
the '70s. Technology improvements continued leading to two landmark buildings
in 1980, a 2,700-square foot home and a 20,008-square foot, multi-story office
(the Spence Office Building) in Nashville, Tennessee. Since 1980, the technology
has been marketed as the SYNERGY SYSTEM.
How does the performance of buildings that have the SYNERGY System compare
to other buildings?
For several years the Energy Efficient Buildings Association sponsored competition
to select an annual "most energy-efficient residential building." Energy
performance is evaluated based on the BTU-use per square foot, per year,
per degree day. This gives a common basis for comparing various sizes of
homes in different climates. In 1989 the winner used 1.96 BTU/ft²-year-dd
(dd = degree day). The 4,900-square-foot home built in Winchester, Tennessee,
in 1972 (17 years earlier), used 1.95 BTU/ft²-year-dd. The 2,700-square
foot home built 'in 1980 demonstrated efficiencies of 1.35 BTU/ft²-year-dd
at single digit outdoor temperatures.
Results from SYNERGY buildings of the late 70's compare very favorably
with internationally recognized energy efficient buildings of the 80's and
90's done by others.
Since the early 80's, the American Society of Heating Refrigeration, and
Air Conditioning Engineers (ASHRAE) has sponsored annual competition to recognize
energy efficient buildings. One category of this international competition
is commercial buildings. The 1996 winner was a combined 33,000/52,000-square
foot office/production building in Kernersville, North Carolina, submitted
by a firm in Greensboro, North Carolina that specializes in energy conservation.
The HVAC system was reportedly separately metered in both the office and
production sections of the building. Weather conditions in Nashville, Tennessee,
and Kernersville, North Carolina are similar. The operating cost of the HVAC
system in the office section of the Kernersville facility was 30.1 cents per square foot per year. By comparison,
applying the 1998 utility rates, the 1980 to 1983 performance of the Spence
Office Building yielded an average of 18.9 cents
per square foot per year. |
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| First-Cost Impact of
the SYNERGY System on Buildings |
On buildings less
than 15,000-square feet of conditioned space, the first cost usually increases.
In most buildings, the first cost increase is recovered in less than three
years through utility cost savings. In buildings of 15,000 square feet and
more, the first cost often decreases using the SYNERGY system. |
| Corporate Marketing Objectives |
1.To establish businesses
in various metropolitan areas to market the SYNERGY System.
2. To solicit prospective clients who are planning new buildings, particularly
school buildings.
3. To provide appropriate elements of the SYNERGY System in areas where
the complete system is not available. |
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