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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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