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Power Generation Overview

Power Generation Overview. Tommy Waggoner. Generators.

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Power Generation Overview

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  1. Power Generation Overview Tommy Waggoner

  2. Generators Illustration of a real power plant generator. Stator refers to the part that does not move, and rotor refers to the part that is rotated inside the stator. The rotor is a large electromagnet with windings inside to produce a magnetic field. As it rotates inside the stator, induced current is generated at the windings of the stator. http://www.hk-phy.org/energy/power/act_ac_gen_e.html

  3. Wind Generation

  4. Wind Generation http://en.wikipedia.org/wiki/Wind_turbine

  5. Wind Generation http://www.siemens.com/press/pool/de/pressebilder/2012/photonews/300dpi/PN201204/PN201204-06e_300dpi.jpg

  6. Wind Generation Pros • No air or water pollution • Renewable Resource • “Free” fuel Cons • Unpredictable output • Most available off-peak • Obstruction of views • Noise • Small capacity (1.5MW) • Kills wildlife (birds, bats,etc.)

  7. Hydro Generation/Pumped Storage Hydro http://en.wikipedia.org/wiki/File:Hydroelectric_dam.svg

  8. Hydro Generation Pros • No air or water pollution • Renewable • “Free” fuel • Benefits of man-made lakes Cons • Susceptible to drought • Expensive to build • Environmental impact • Burdens of man-made lakes

  9. Combustion Turbines GPC’s Plant Robins

  10. Combustion Turbines • Combustion Turbines primarily burn natural gas but they are flexible and can burn other fuels as well: • Fuel Oil • Landfill Methane • Gasified Coal (IGCC)

  11. Gas Fired Combustion Turbine Generation Pros • Gas is cleanest fossil fuel • Low NOx, SO2 and CO2 • Relatively low capital cost • Quick start capability Cons • Non renewable • High operating costs • Heat Rate ~12000 Btu/kwh • Fuel Price is very volatile

  12. Coal Fired Steam Plant GPC’s Plant Scherer

  13. Coal Fired Steam Plant GPC’s Plant Scherer

  14. Coal Fired Steam Plant Emission Control Technologies SO2 & Hg (acid gases) Control Scrubber Coal-Fired Boiler Dust&Hg Control ESP ACI NOx & Hg Control SCR New Stack Air Heater Baghouse (Hg) (Activated Carbon Injection) SNCR NOX Combustion Controls Limestone Gypsum Fuel Changes Flyash Bottom Ash

  15. Coal Fired Steam Generation Pros • Typically, coal is a low cost fuel • Plentiful fuel supply • Large capacity • Reliable Cons • High emissions (Nox, SO2, CO2) • Particulates • Non-renewable • Coal mining issues • Safety • Environmental impact

  16. Nuclear Steam Plant SNC’s Plant Vogtle

  17. Nuclear Steam Plant Pressurized Water Reactor (PWR): Vogtle, Farley http://commons.wikimedia.org/wiki/File:PWR_nuclear_power_plant_diagram.svg

  18. Nuclear Steam Plant Boiling Water Reactor (BWR): Hatch http://commons.wikimedia.org/wiki/File:BWR_nuclear_power_plant_diagram.svg

  19. Nuclear Steam Generation Pros • No NOx, SO2 or CO2 emissions • Inexpensive fuel costs • Uranium is plentiful Cons • High capital costs • Safety concerns • Radioactive waste

  20. Combined Cycle Plant

  21. Combined Cycle Plant

  22. Combined Cycle Plant

  23. Combined Cycle Plant

  24. Combined Cycle Plant

  25. Gas Fired Combined Cycle Generation Pros • Gas is cleanest fossil fuel • Low NOx, SO2 and CO2 • Comparatively low capital cost • Short startup time • High efficiency • Heat Rate ~7000 Btu/kwh Cons • Non renewable fuel • Fuel Price is very volatile

  26. Q: Which Generation Type is Best? A: All of the Above

  27. Stack Report

  28. Winter Summer Spring / Fall

  29. Combustion Turbines Hydro Combined Cycles Coal Nuclear

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