Download
renewable energy n.
Skip this Video
Loading SlideShow in 5 Seconds..
Renewable Energy PowerPoint Presentation
Download Presentation
Renewable Energy

Renewable Energy

85 Views Download Presentation
Download Presentation

Renewable Energy

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

  1. Renewable Energy

  2. Solar Energy • Can be used to: • -Heat water • -Heat spaces • -Run electricity (electronics, appliances) • Works from PHOTOVOLTAIC devices (PV)

  3. Pros Cons Sunlight not always constant (weather, location) Requires a large surface to collect sun energy to power a building Installation is expensive • No pollution or CO2 emissions • When on buildings, they have minimal impact on the environment • Renewable • Saves $ • Low maintenance

  4. Hydrogen Energy

  5. Hydrogen energy • -Can be made from stored Hydrogen (not common) • -Can also come from fossil fuels, hydrocarbons, biomass, and water, sunlight, wind, and nuclear sources. • Fuel Cells • http://www.hydrogen.energy.gov/production.html

  6. http://www.autospectator.com/cars/models/2011-honda-fcx-clarity-official-photos-features-specs-pricinghttp://www.autospectator.com/cars/models/2011-honda-fcx-clarity-official-photos-features-specs-pricing

  7. Hydrogen Energy pros cons -More expensive -cars not built to hold fuel cells -may still require fossil fuels -H2 is hard to store or transport -few refilling stations • -no pollution • -no moving parts • -operates at higher efficiencies than normal fuels

  8. WIND ENERGY wind turbines

  9. http://inhabitat.com/bahrain-world-trade-center-turbines-activate/http://inhabitat.com/bahrain-world-trade-center-turbines-activate/

  10. Wind Energy Pros Cons -unreliable and depends on wind patterns, temp, time of year -equipment is expensive -initial expense is high • -sustainable • -Non-polluting • -continual • -low maintenance cost • -proven effective

  11. Hydroelectric Energy Pros cons -changes to river ecosystem -lowers water quality, pollutants back up in lake -effects fish migration -long construction process • -sustainable • -Non-polluting • -controls flooding • -recreational opportunities • -low expenses after initial cost • -lasts longer

  12. Geothermal Energy

  13. What is it? • It’s heat energy from the earth

  14. http://www.eere.energy.gov/topics/geothermal.html

  15. http://www.geni.org/globalenergy/library/renewable-energy-resources/geothermal.shtmlhttp://www.geni.org/globalenergy/library/renewable-energy-resources/geothermal.shtml

  16. Geothermal Energy Pros cons -limited locations -constantly replenishing water -could contaminate groundwater -CO2 and H2S could possibly be released -pricey installation • -sustainable • -mostly non polluting • -energy can be produced non-stop • -minimal expenses AFTER initial costs • -minimal impact on stations that collect the energy

  17. Biomass Fuels

  18. Biomass fuels • http://www.nrel.gov/gis/biomass.html

  19. BIOMASS FUELS PROS cons -uses food crops -increases price of food and livestock -takes more energy to produce then it makes -expensive • -reduces/equals out greenhouse gases (CO2) • -gives an alternate to fossil fuels • -almost everywhere • -reduces waste products