# Save Energy_ Save Money by dfhdhdhdhjr

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```									Natural Cash: An
Investigation of
Energy Efficiency
Presented by Nolan Jones, Tommy Horne and Lin Lau
Problem      Electricity:

   Costs money.

   Current methods are harmful
to environment.

   Purpose of our study:

   Investigate alternate energy
resource.

   Save money.

   Reduce carbon emissions.
Procedure

•   First, determine building to analyze.
•   School, house, store, etc.
•   Find out how much is spent on energy,
or how much is used, if not already
known.
•   Research savings with desired energy
saving mechanism, e.g. solar panels.
•   Analyze data, conclude.
Green Energy

   The three most common forms of natural energy
are solar, from the sun; wind; and hydro, from
moving water.
   They all come with some drawbacks, and
   Hydro: Must be near a moving body of water.
   Solar: Must have direct sunlight.
   Wind: Must have open air.

   The main focus with all three natural energies is
that they all provide free, clean energy.
Marcus Welcome Center

• Open on May 2005.
• Center provides enrollment
information to possible students, and
serves as a meeting place.
enrollment.
•Only building on campus with its own
centralize system of energy.
•Building of analysis.
Marcus Welcome Center Information
Building Size             Energy usage               Utility bill/month

29,320 Sq. ft.            47, 536 Kwh                Electricity: \$2,993
total: 290 million Btu’s

•Btu: British Thermal Units—Energy needed to raise one lb. of water 1 degree.
The Average Office Building
   79.8 kBtu per square foot.
   \$1.65 per/sq. foot.

   66% electricity/ 34% gas
   15.5 kWh per/sq. ft.—electricity
   0.27 therms per/sq. ft.—gas

   15.5 kWh=53 kBtu—0.27
therms=26.8 kBtu
   79.8 kBtu= 79800 Btu
MCW Observations
Energy   energy      Energy

                     How are the computers
controlled?
Controlled by users, but always turn off
for security purposes

         How are lights controlled?    Controlled by motion sensor or infrared
detectors, so they shut down
completely without occupants in the
room. Larger common areas are
controlled by timers, except for some
lobby light that are kept on for security
purposes


How are AC/heat controlled?   Building heating/cooling systems are
controlled by central energy
management system, which has night
setback temperatures for energy
conservation
   The Marcus Welcome Center also
recycles office paper, magazines,
newspaper, aluminum cans, and
plastic bottles.
Solar Panels

   Solar panels work by converting
the energy from the sun into the
electricity we use to power our
houses.

   The sun’s rays “agitate” the
photovoltaic cells.
   Energy is transferred and
converted.
   Some will store in battery.

   Some systems will put excess
power back in grid, and power
meter will reverse: lower bill!
Solar “Tiles”
   Solar tiles work in much the same way.

   Less space.

   More efficient.

   Replace shingles.

   Lighter.

   Long lasting—up to forty years.

   Disadvantages of solar in general:

   Fragile- work in progress.

   No sun—no power.

   Dirty—poor reception.

   Roof—if sun is on other side, you get
less power.
Wind Turbines
   Wind Turbines have angled blades
that spin in wind.

   Kinetic energy is transferred to
converter.

   Most wind turbines lose about 5% in
conversion—very efficient.

   Slow down in high speed wind.

   Supply direct energy when
battery is full.

   Can also put excess directly into
power grid, reducing power bill.

   Many safety features.

maintenance.
Solar Panel Prices
Chart Title
1200

1000

800
Price

600

400

200

0
0   50   100            150   200   250
Watts
Wind Turbine Prices
Price
16000

14000

12000

10000
Cost

8000

6000

4000

2000

0
400   300   900   1000   3000           7000   3200   6000   5000
Watts

More power means higher cost, but it’s worth it.
Analysis
   Cost to take MWC off power grid: \$3,134,365.63 .
   Government tax reliefs:
   30% yearly tax deduction.
   100% property tax reduction.
   Post Incentive (after tax taken out):
   \$2,180,104.59
   Cut in half to half savings.
   Payback rate always same: 31.41 years.
   Information based on nine dollars per kilowatt.
   Carbon Emissions:
   Currently produce 902,881 pounds of carbon dioxide.
   Equivalent to driving 1,000,501 miles.
   To offset would require:2,257 trees.
   Formulas and information found on www.findsolar.com.
Conclusion

   To conclude, the Marcus Welcome Center is
already very efficient, and the cost to install solar
panels or wind turbines is not economically
viable, because by the time the costs are paid off,
new, more efficient and cheaper equipment
would already be on the market.
Thank You!

   Mrs. Morgan
   Mrs. Scott
   Mrs. Miller
   Mr. Smith
   Mrs. Fuerer
   Mr. Pettis
   Mrs. Johnson
Bibliography
   http://www.findsolar.com/index.php?page=rightforme
   http://www.otherpower.com/otherpower_solar_new.html

   http://www.cleanerairsolutions.co.uk/solar.php
   http://www.wholesalesolar.com/solar-panels.html
   http://alternate-power.org/solar-energy-photovoltaic-tiles-house-and-home-
applications/
   http://www.epa.gov/RDEE/documents/sector-meeting/4bi_officebuilding.pdf