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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
         advantages.
            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.
•Admission of scholarship and
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
High     Medium      Low       Questions                     Answers
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.

   Advantages:

       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.

   Advantages:

       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.

   Disadvantage: Moving parts—high
    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
        Google
    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
   http://askville.amazon.com/distance-earth-
    moon/AnswerViewer.do?requestId=2346608

				
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