Derek Sitosky Lighting/Electrical

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Derek SitoskyLighting/Electrical

• von Liebig Center for Science

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The Science Center is an 88,230 square foot, 20
million dollar facility located in Huntingdon,
Pennsylvania, and is the newest addition to
Juniata College. Its classic brick façade and
look fits perfectly within the historical campus
architecture. The building is mostly composed of
laboratory spaces, which house the chemistry and
biology departments. Over the past two summers I
had the chance to work on larger lab facilities
for NIH and UCLA so it was only fitting to
continue in the laboratory field. Design Team
- Owner Juniata College - Civil
Engineer Keller Engineers - Structural
Engineer Fink, Roberts Petrie, Inc. - M.E.P.
Engineer Burt Hill Kosar Rittelmann Assoc. -
Lab Consultant Research Facilities Design -
Architect Hastings Chivetta Architects, Inc.
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Focus
Lighting
Chemical Synthesis Lab Comparison Between two
layouts.
Lecture Hall
Breadth
Mechanical Enthalpy Wheel
LEED Study
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Criteria
Blend in with Older Surroundings
Classic
Cost Effective And Low Energy
Functionality
Cool
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CHEMICAL SYNTHESIS LAB
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Layout 1
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Pendant
Fixtures
59.7W 2T8
Bench Strip
42W T12
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Lab Bench
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Layout and Switching
Semi indirect pendant Fixtures are mounted
between the lab benches. Each side of the lab
bench utilizes an overhead strip providing light
directly to the bench surface There are two
rows of lamps per pendant. Lamp rows are
switched separately from one another. These
switches are found at each of the three doors.
The strip lights are controlled at each end of
the bench. This switching method will provide
the required light levels for both experimental
and normal class use.
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Light Levels
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Power Density

• Bench Strip 42W x 24 1008W
• Pendant 59.7W x 24 1432.8W
• Total 2440.8W
• Square Feet 1430
• 1.70 W/ft2
• ASHRAE 90.1 for a classroom
• 1.8 W/ft2

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Layout 2
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2x2 Recessed Parabolic Troffer
3 17W Fluorescents
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Layout and Switching
2x2 Fixtures are mounted around lab benches on
a 2 grid. Fixtures are wired in tandem with
one switch controlling the innermost lamp and the
other controlling the two outer lamps of each
fixture. Switches are located at each of the
three doors. This switching method will provide
the required light levels for both experimental
and normal class use.
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Light Levels
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Power Density

• 2x2 71W x 36 2556W
• Square Feet 1430
• 1.8 W/ft2
• ASHRAE 90.1 for a classroom
• 1.8 W/ft2

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LECTURE HALL
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Downlight
42W Triple Tube Compact Fluorescent
Wallwasher
35W T16 Fluorescent
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Layout
6 Downlight
4 Wallwashers
Switching
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Power Density

• Downlights 48W x 66 3168W
• Wallwasher 39W x 5 195W
• Total 3363W
• Square Feet 2400ft2
• 1.4 W/ft2
• ASHRAE 90.1 for a classroom
• 1.6 W/ft2

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Mechanical Enthalpy Wheel

• Rotary heat exchangers revolve in a plane
  perpendicular to the airflow and work off of
  exhausted air on the principle of sensible and
  latent energy transfer. Harnessing this wasted
  energy by means of an aluminum wheel and
  desiccant material helps cool and heat the flow
  of air into the building. The Science Center
  currently supplies its spaces with outdoor air as
  well as return air from various spaces. Many of
  the spaces are labs in which air must be
  exhausted and cannot be directly put back into
  the system. The proposed heat exchanger will
  work off of this exhausted air.

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Schematics
The system recovers both sensible and latent
energy from the exhaust air. Sensible energy is
captured on the aluminum wheel and as the wheel
turns, it transfers this energy to the outside
air stream coming into the building. The latent
energy is captured in a similar manner. The
desiccant absorbs moisture from a stream with
high vapor pressure and desorbs it to the lower
vapor pressure stream.
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Psychometrics
Design conditions 75F DB 62.5F WB and
64.9Gr/lb.
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SavingsCooling

• .

AHU-1 1,720.21 AHU-2 1,275.31
AHU-1 141 ton AHU-2 134 ton
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SavingsHeating

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AHU-1 3875.25 AHU-2 2977.42
AHU-1 1,546,538.4 BTU/h AHU-2 1,172,746.1
BTU/h
Total Savings 9848.19
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LEED Study

• LEED, Leadership in Energy and Environmental
  Design, is a rating system developed by the U.S.
  Green Building Council to assess the
  environmental sustainability of building designs.
  LEED is based on points that are earned for
  building attributes considered environmentally
  beneficial.
• LEED has six credit categories on a 69-point
  scale. These areas include sustainable sites,
  water efficiency, energy atmosphere, materials
  resources, indoor environmental quality and
  innovation design process.

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Benefits

• Environmental
• Enhance and protect ecosystems and biodiversity
• Improve air and water quality
• Reduce solid waste
• Conserve natural resources
• Economical
• Reduce operating costs
• Enhance asset value and profits
• Improve employee productivity and satisfaction
• Optimize life-cycle economic performance
• Health and Community Benefits
• Improve air, thermal and acoustic environments
• Enhance occupant comfort and health
• Minimize strain on local infrastructure
• Contribute to overall quality of life

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EnvironmentalWater Savings

• Recycled Rainwater
• Catch the rainwater from the roof via a gutter
  and pipe system to storage tanks. The rainwater
  will be used to irrigate landscaping in the
  courtyard as well as to the near-by football
  field. Tanks could be hidden underground or
  under the football field bleachers.

Waterless Urinals Waterless urinals save on
average 45,000 gallons of water a year per
urinal (1.5-3 gallons a flush). These
urinals install just like their water
counterparts but they eliminate the flush
water supply lines and valves. The urinal
surfaces are treated with a urine repellent
substance that takes the place of flushing
water
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Economical

Energy Performance Most of the building
was within ASHRAE 90.1 1999 standards however
spaces like laboratories and lecture halls were
reduced. Lighting lodes were reduced by 5. In
addition to lighting loads, the use of an
enthalpy wheel reduces chiller and boiler loads.

Measurement and Verification By
measuring and monitoring how much water and
energy is consumed, building owners can predict
usage and develop ways to save energy. This
performance data can be compared to operation
reduction goals.
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Health and Community Benefits
CO2 Providing CO2 monitoring raises
indoor air quality thus sustaining long- term
occupant comfort and well being. CO2 HVAC
Controls sensor is designed to monitor carbon
dioxide CO2 levels in the air and interface with
the ventilation damper in an HVAC system. These
levels can be used as input to a controller to
control the ventilation damper position and
ensure an adequate level of outside air in the
building.
Low Emitting Materials Paints, Carpets,
Adhesives, Wood Reduce the quantity of indoor
air contaminants that are odorous, potentially
irritating, and/or harmful to the comfort and
well-being of installers and occupants. This can
be achieved by specifying low-voc materials.
Low-voc means low volatile organic compounds
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Conclusion

• Thanks To
• Burt Hill Kosar Rittelmann Assoc
• Juniata College
• AE Staff