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U.S. Primary Energy Consumption by Source and Sector, 2008 (Quadrillion Btu) 99.2 Quadrillion BTU Source: DOE/EIA
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Primary Energy Use by Fuel – 1980 – 2030 (quadrillion Btu) Source: AEO 2009
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Industrial Transportation Residential and Commercial Electric Power Petroleum-based liquids consumption is projected to be flat as biofuels use grows Biofuels million barrels per day HistoryProjections Source: Annual Energy Outlook 2009 (ER)
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Biomass Wind Solar Waste Geothermal Nonhydropower renewable power meets 33% of total generation growth between 2007 and 2030 billion kilowatthours HistoryProjections Source: Annual Energy Outlook 2009 (ER)
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How Power Plants Produce Electricity
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Source: NAS 2009
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Renewable Energy Sources Oceans Geotech Biomass Hydro Wind Solar Storage
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Renewable Energy Characteristics ► Abundant and available everywhere ► Inherently does not deplete the earth’s natural resources ► Causes little, if any, environmental damage
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The Role of Renewable Energy Consumption in the Nation’s Energy Supply, 2007 Source: EIA May 2008
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Hydro Power
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Source: TVA
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Drag
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Wind Resources of the U.S.
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Current technology: 5 MW turbines and 60 m blades (120 m diameter)
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Passive Solar
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Solar Earth at sea level – 1,000 W/m 2 NC solar radiation – averages 4.5 hrs/day NC – 4.5 kWh/m 2 PV efficiency ~ 15% (Polycrystalline) Capacity Factor – 4.5/24 = 18.7%
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Air Infiltration Sites Plumbing penetrations through insulated floors and ceilings Chimney penetrations through insulated ceilings and exterior walls Fireplace dampers Attic access hatches Recessed lights and fans in insulated ceilings Wiring penetrations through insulated floors, ceilings, and walls Missing plaster Electrical outlets and switches, especially on exterior walls Window, door, and baseboard moldings Dropped ceilings above bathtubs and cabinets
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Biomass and Biofuels Resource Potential
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Dependency on Nuclear Power ~440 Reactors worldwide with 104 in the US, 58 in France and 31 in the Russian Federation
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Brunswick 1 & 2 (Southport) Sharon Harris 1 (New Hill) McGuire 1 & 2 (Cornelius) NPPs in the Southeastern U.S.
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Isotopes of Hydrogen hydrogendeuteriumtritium
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Each fuel pellet has the same amount of energy as: One ton of coal or 149 gallons of oil OIL 2 1/2 tons of wood
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Pressurized Water Reactor
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Excess Energy per Nucleon HU, Pu Fe Atomic Number Energy fusionfission 190+
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Principal Nuclear Reactions (in a Reactor) n n + 2-3 n & 200 MeV fp2 fp1 fission reaction capture reaction U235 U238 U236 U239 Np239 Pu239 β β
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SAFETY
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Spent Nuclear Fuel An average sized nuclear power plant produces around 20 tons of spent fuel a year. Composition: ~ 1% Plutonium-239,240 & MA ~ 3% Fission/Stable Products ~ 96% Uranium (~0.8% U 235 ).
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Economics O&M + Fuel 2008 Fuel Costs: Coal 2.57 Gas 8.09 Nuclear 1.87 Petroleum 17.26 Wh Source: NEI
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Uranium (Once-Through) Fuel Cycle Spent Fuel Geological Repository Storage Pools & Dry Cask Storage
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Uranium Fuel Cycle with Reprocessing SPENTFUELSPENTFUEL Uranium Plutonium Minor Actinides LLFP SLFP & Stable Recycle or Class C Waste Transmute or MOX Transmute or FBR Fuel Repository Transmute or Repository
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Composition After 10 Years of Decay ■ Uranium 95.6% ■ Plutonium 0.9% ■ Minor Actinides 0.1% ■ Iodine & Technicium 0.1% ■ Stable & SLFP 3.0% ■ Cesium & Strontium 0.3% 1.1%
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Relevant Half Lives
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