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Energy
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Alternative Renewable Sustainable
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A. An Electricity Primer 2 Types 1.Static A non-moving e- gradient is produced. A discharge relieves the gradient. 2.Current
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2. Current electricity = a constant flow of electrons. Two types of Current Electricity: a. Direct Current (DC) b. Alternating Current (AC)
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a. Direct Current (DC) Battery= bucket full of chemicals that causes electrons to move. Cathode gains electrons Anode loses electrons Electrolyte = chemical that allows the electrons to move
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b. Alternating Current Voltage – number of electrons (volts) Current = pressure of the electrons (amps) Current –
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World Electric Generation (IEA 2009)
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US Electric Generation (EPA 2005)
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A. Wind
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B. Solar 1. Direct Solar vs Uses solar energy for heating or electricity without a naturally occurring conversion. Ex: passive and active solar Indirect Solar Solar converted to another form of energy in nature. Ex: fossil fuels wind biomass hydroelectric
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2. Passive Solar Heat vs Construction designs for collecting heat. No fans or collection devises are used. http://www.susdesign.com/sunangle/ Active Solar Heat Fans, pumps, or collection devises are used.
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3. Solar Thermal Commercial Generators 10-15¢/kWh Oil filled parabolic collectors concentrate heat. An exchanger creates steam that in- turn moves a turbine. Adv/Dis
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4. Photovoltaic 15-25¢ / kWh Based on the diode properties of silicon. Million Solar Roof Initiative –DOE –Solar America Initiative
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http://www.slate.com/blogs/future_tense/2013/02/07/fox_news_expert_on_solar_energy_germany_gets_a _lot_more_sun_than_we_do_video.html?fb_ref=sm_fb_share_blogpost
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C. Biomass
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1. Traditional Biomass
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2. New Fangled Biomass a. Biogas b. Bioliquid adv/dis c.Fuel Crops/Crop Residue d. Biomass to Electricity adv/dis
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D. Hydroelectric 1. Types a. Large scale b. Small scale c. Pumped-Storage System 2. adv/dis
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E. Waves And Tides 1. Differences! 2. Osprey
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3. Ocean Thermal Energy Conversion
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4. Tides
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F. Geothermal 1. Geothermal Reservoirs The Geysers adv/dis 2. Geothermal Heat Pumps
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G. Hydrogen 1. Electrolysis
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2. Combustion of Hydrogen
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3. Hydrogen Fuel Cells
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