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INTRODUCTION TO RENEWABLE ENERGY SOURCES

INTRODUCTION TO RENEWABLE ENERGY SOURCES Energy sources which are continuously being replenished by nature. E. N. E. ATOM. ELECTRONS. PROTON. N. NEUTRON. ELECTRICITY.

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INTRODUCTION TO RENEWABLE ENERGY SOURCES

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  1. INTRODUCTION TO RENEWABLE ENERGY SOURCES Energy sources which are continuously being replenished by nature

  2. E N E ATOM ELECTRONS PROTON N NEUTRON

  3. ELECTRICITY An electric current is created when electrons flow through a wire. Electric current can power things like our computers and TV sets. ELECTRICITY

  4. T G and distributed generated, transformed, to your house ELECTRICITY HAS TRADITIONALLY BEEN………. …fueled by coal, oil or natural gas,

  5. Brainstorm sources of electricity. Which are renewable and which are non-renewable?

  6. SOLAR Geothermal Wind G T Distribution Lines Generator Transformer …THEY NEED OUR HELP! Biomass Keep America Clean! Use Natural Resources Recycle Hydroelectric Biogas NATURAL AND RENEWABLE SOURCES OF ENERGY Your Home

  7. SOLAR ENERGY SOLUTIONS Solar Energy is light and heat energy that comes from the sun.

  8. SOLAR CELL POWER LINES TRANSFORMER INVERTER PHOTO + VOLT = PHOTOVOLTAIC [LIGHT] [UNIT [ELECTRICITY OF PRODUCED ELECTRICITY] FROM LIGHT] Photovoltaics: The direct conversion of sunlight to electricity http://www.aps.com/

  9. PHOTOVOLTAIC POWER PLANTS Glendale Airport: Prescott Airport: Scottsdale Covered Parking:

  10. SOLAR THERMAL POWER PLANTS 10,000,000 Watts Solar II Experimental Power Plant, California 25,000 Watts Dish/Stirling Engine System, Arizona 1,000,000 Watts Parabolic Trough Power Plant, Arizona

  11. HOW DOES GEOTHERMAL HEAT GET UP TO EARTH'S SURFACE? Heat comes from hot liquid magma. Magma is Hot liquid rock Magma or very hot rock

  12. Geysers at Yellowstone National Park Old Faithful An example of how the heat rises from the earth SteamboatGeyser http://en.wikipedia.org www.nps.gov

  13. GEOTHERMAL ENERGY IN ARIZONA IDENTIFY THE LOCATIONS WHERE GEOTHERMAL COULD BE. Picture from www.EnergyAtlas.org

  14. HOW DO YOU CONVERT WIND INTO ELECTRICITY? The wind hits the rotor, the rotor spins the generators making electrical energy from mechanical energy Gearbox Generator Rotor Diameter G Nacelle The transformer changes the voltage to match the voltage on the power lines before it is sent to your house Transformer T Tower

  15. WIND FARMS WHERE HAVE YOU SEEN THESE TYPES OF WINDMILLS?

  16. 2. Underburns known as ground fires help clear the forest floors so that grass grows and large trees survive. 1. Left alone, forests become thick with trees and forest litter. BIOMASS ENERGY FROM ARIZONA FORESTS 3. Underburns also prevent more damaging fires that spread across the top of the trees. THE BEGINNING 5. Sometimes fire makes seeds grow, but sometimes the forest has to be replanted to speed the return of trees. 4. The top of tree fires spread quickly and are much more difficult to fight. They leave burnt land that can take years to replenish. What other damage can happen from forest fires?

  17. Wild fires and bark beetles create biomass that can be used to generate electricity.

  18. THE BEGINNINGS OF BIOMASS Biomass was the first fuel mankind used for energy. CLEANER THAN COAL MORE NATURE FRIENDLY THAN NATURAL GAS AVAILABLE BEFORE OIL Burning wood was used for warmth and cooking, as well as keeping wild animals away

  19. THE BALANCE OF BIOMASS GREENHOUSE GAS Biomass generates far less emissions than fossil fuels Use Biomass, get lessGreenhouse Gas MORE FOSSIL FUEL BIOMASS LESS CO2 CO2 CO2 CO2 CO2 CO2 (Carbon Dioxide) is released by burning biomass and is used by other plants to make food.

  20. BALANCE OF BIOMASS Plants take in CO2 (Carbon Dioxide) and make oxygen. When biomass is burned, it uses oxygen to make CO2 This is the balance of biomass

  21. BIOMASS ENERGY COMES FROM plant, human or animal derived organic matter that is eaten, burnt, or converted into fuel. Wood from trees, agriculture, wood factory waste, and the construction industry Burnt wood from forest fires Animals and animal droppings

  22. BIOGAS Organic Waste Material Decomposition Biogas + = Vegetation Manure Sewage Landfill Garbage Methane rich flammable gas Breaking down, or changing, from a solid into a liquid or a gas

  23. NATURE CREATES BIOGAS GREENHOUSE EFFECT Greenhouse Gases Nature creates biogas from rotting plants around ponds and wetlands METHANE Rotting Vegetation As this methane gas is released into the atmosphere it creates an invisible ceiling which traps the heat from the sun.

  24. MAN-MADE BIOGAS (LANDFILLS) Escaping methane can destroy nearby vegetation. To prevent methane from escaping into the atmosphere, it is collected and burned in a flare stack What else will we lose as a result of losing plants and trees?

  25. MAN-MADE BIOGAS (SEWAGE TREATMENT PLANT) Sewage Digester Sewage Water Sewage treatment plants clean sewage water producing large amounts of methane Close-up of Flares that can be flared or turned into electricity

  26. HYDROELECTRIC POWER Hydro means water in Latin. It is the most often used source of renewable energy to make electricity.

  27. Condensation Rain Lake WATER Water is constantly moving through a cycle: Water vapor rises into the atmosphere through evaporation from lakes and oceans and transpiration from plants and trees. It condenses to form clouds. Then rain or snow falls back to the earth to the oceans and lakes. Transpiration Evaporation Transpiration is the evaporation of water into the atmosphere from the leaves and stems of plants

  28. HOW HYDROPOWER WORKS The energy of water moving downstream from the rain and snow to a reservoir or lake goes to a large dam which has engines and turbines that make electricity. Another source of hydroelectricity is tidal electricity which uses the tides from the ocean to make electricity.

  29. Pros and Cons of Renewable Energy Solar Wind Geothermal PRO CON • Continuous • Abundant • Portable • Modular • Need storage, • Peaks at solar noon, • Most expensive of renewable energy sources • Cheapest of the renewable energies today • Not always near transmission lines • intermittent power • Can provide heat and cooling • Continuous • Not always near transmission lines • Not portable

  30. Pros and Cons of Renewable Energy PRO CON • Can be transported to a generator for a continuous source of energy • Distance to the fuel • Not always accessible Biomass Biogas Hydropower • Always accessible, can provide energy 24 hours per day • Sources are limited in size • Dam construction is expensive • Damming rivers causes changes in ecological cycles and surrounding landscapes • There are a limited number of feasible sites for large dams • Inexpensive • No Pollution • Lakes and reservoirs can be used for recreation

  31. YOUR HOME The final destination solar Wind Hydroelectric Power Biomass Hot Springs Biogas Geothermal

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