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ES Lesson 10: Alternative methods of electrical power generation. © 2012 C. Rightmyer, Licensed under The MIT OSI License, 20 July 2012
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Electrical power delivery system Electricity and Magnetism, Gareth Stevens Publishing, Steve Parker, 2007
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A gas powered steam generator
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A steam turbine rotor
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A coal fired generator
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Potential concept for sequestering CO 2 http://en.wikipedia.org/wiki/File:Carbon_sequestration-2009-10-07.svg
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A hydro-electric generator
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A ladder for migrating fish http://www1.eere.energy.gov/water/hydro_benefits.html
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A nuclear fission generator
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How a nuclear fission power generator works 1. reactor block 2. cooling tower 3. reactor 4. control rod 5. support for pressure 6. steam generator 7. fuel element 8. turbine 9. generator 10. transformer 11. condenser 12. gaseous 13. liquid 14. air 15, air (humid) 16. river 17. cooling-water circulation 18. primary circuit 19. secondary circuit 20. water vapor 21. pump
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A geothermal generator
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How about electricity from cow poop! http://planetgreen.discovery.com/videos/dean-of-invention-how-cow-waste-generates-electricity.html
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Cows eat lots of grass and grain
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Cows produce poop 24 hours per day
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A portable diesel generator
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Methane is pumped to an electrical generator.
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Excess power is routed into the grid.
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A parabolic mirror based solar-thermal generator Linear parabolic mirrors Inert gas in heat tubes pumped to boiler
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ES demo 10-1. One method for tracking the sun’s elevation angle.
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How to use the parabolic equation to determine the shape the reflecting mirror y = x 2 / (4p) For example: let p =3”, then for x=0”, y= 0” for x=4”, y = (16/12) = 1.33” for x=6”, y = (36/12) = 3” When the mirror is pointed directly at the sun, all solar energy striking the mirror is reflected towards the heat collection tube located at the focal point. x-axis y-axis focal point (p=3 inches) http://www.gizmology.net/parabola.htm
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World’s largest solar thermal generating plant http://www.smithsonianmag.com/science-nature/take-a-look-at-the-worlds-largest-solar-thermal-farm-91577483/
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A wind generator
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Cut away view of a wind generator. http://www.alliantenergykids.com/EnergyandTheEnvironment/RenewableEnergy/022397 http://www.builditsolar.com/Projects/Wind/wind.htm#DIYWind
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ES demo 10-2. How a wind generator works
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Solar photovoltaic generators in desert Nellis AFB, Nevada
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An up close look at the tracking systems http://www.nrel.gov/data/pix/Jpegs/02406.jpg
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Urban solar photovoltaic generators
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ES demo 10-3. A solar PV powered toy
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ES demo 10-4. Solar electric generation using a PV panel.
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How can we compensate for PV and Wind outages? CAES: Compressed Air Energy Storage PHS: Pumped Hydro Storage H2: Hydrogen Storage SNG: Substitute Natural Gas http://www.renewableenergyworld.com/rea/news/article/2014/07/hydrogen-energy-storage-a-new-solution-to-the- renewable-energy-intermittency-problem
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A Sodium-sulfer heavy duty battery This battery supplies 4 megawatt-hours of electrical power Battery
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Using otherwise wasted grid power with my electric car
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The Tata compressed air vehicle
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How to convert water into Hydrogen and Oxygen http://www.renewableenergyworld.com/rea/news/article/2014/07/hydrogen-energy-storage-a-new-solution-to-the- renewable-energy-intermittency-problem
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Using hydrogen for vehicle fuel http://www.toyota.com/mirai/fcv.html
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Driven with hydrogen http://www.toyota.com/mirai/fcv.html
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A potential future storage concept using the recently published MIT developed solar heated graphite sponge
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MIT developed solar graphite sponge
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