1 / 29

Hydroelectric Power

Hydroelectric Power. Worldwide, hydropower plants produce about 24 percent of the world's electricity and supply more than 1 billion people with power.

tehya
Download Presentation

Hydroelectric Power

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Hydroelectric Power

  2. Worldwide, hydropower plants produce about 24 percent of the world's electricity and supply more than 1 billion people with power. The world's hydropower plants generate a combined total of 675,000 megawatts, the energy equivalent of 3.6 billion barrels of oil, according to the National Renewable Energy Laboratory. There are more than 2,000 hydropower plants operating in the United States, making hydropower the country's largest renewable energy source.

  3. What is Hydroelectric Power? • Hydropower plants harness water's energy (of motion) and use simple mechanics to convert that energy into electricity. • Hydropower plants are actually based on a rather simple concept -- water flowing through a dam turns a turbine, which turns a generator.

  4. What are the parts of a Hydroelectric Power Plant? • Intake and Penstock-pull water into the area where turbine is located • Turbine-spins as water passes through • Generator-generates electricity using mechanical energy of the spinning turbine • Transformer-transforms electrical energy for passage through the power lines • Reservoir-holds the water

  5. Hoover Dam

  6. Picture of the shaft connecting the turbine and generator

  7. 4 Years to build the Hoover Dam

  8. Hoover Dam Powerhouses Hoover Dam has 17 generators giving it the capacity to produce over 2,000 megawatts of electricity.

  9. Reservoir for Hoover Dam-Lake Mead

  10. View from on top of dam

  11. Spillways Open-water bypasses the dam

  12. Interesting Hoover Dam Facts • The Hoover Dam weighs 6.6 million tons • There is enough concrete in the dam to build a 3 inch • thick, 4 foot wide sidewalk around the earth at the equator • Standing 726 feet tall, the Hoover Dam is tallest solid • concrete dam in the western hemisphere

  13. How does Tallahassee produce its power? The City of Tallahassee uses 3 power plants to generate electricity for its residents: • C.H. Corn Facility • Arvah B. Hopkins Generating Station • Sam O. Purdom Generating Station Tallahassee requires approximately 425 megawatts of electricity daily! Source: www.talgov.com

  14. C.H. Corn Facility • Hydroelectric powered • 1 of only 2 hydroelectric plants in Florida (why only 2?) • Has 3 generators • Capacity of 12 megawatts Source: www.talgov.com

  15. Arvah B. Hopkins Generating Station • burns fossil fuels (either natural gas or oil) to convert water to steam in two huge boilers. • The steam is used to drive two turbines which are in turn connected to power generators. • In addition, power can be produced when needed by two gas turbine generators located at the plant. • Capacity of 368 megawatts Source: www.talgov.com

  16. Sam O. Purdom Generating Station • Purdom Unit 8 uses a system called Combined Cycle Technology, which effectively uses the energy from the burned fuel twice. • It then uses mechanical energy produced by steam to move the turbines. • Capacity of 320 megawatts Source: www.talgov.com

  17. Benefits of Hydroelectric Power • Clean, very little pollution • Renewable resource • Inexpensive

  18. Downsides to Hydroelectric Power • Diverts natural flow of water-changes the environment • Not suitable for all areas-need high and low elevations for gravity to cause water to move

  19. How does the electricity get to our homes? http://www.brainpop.com/technology/scienceandindustry/dams/zoom.weml

  20. Other Methods of Power Production: • Solar power • Wind power • Geothermal power • Biofuels • Nuclear • Wave power • Tidal Power

  21. Deerlake Middle School Solar Panel The PV (photovoltaic) panel collects the sun’s energy to generate power

  22. How does it work? • Click the link to see how it works: http://www.solar-is-future.com/index.php?id=316 Video: https://www.eeremultimedia.energy.gov/solar/videos/solar_power_basics

  23. Parts of the System Energy collected from the panel is stored in the batteries in the shed The system has a “brain” that determines where the power from the panel goes: either to the batteries or to offset power used from Talquin Electric

  24. Solar Energy • Energy is collected and stored in batteries • Once the batteries are full, power is used to offset the electrical needs of the school • Some systems will actually feed back to the local power company if it generates extra power that is not used • Our solar panel generates enough power to operate our emergency lights and two outlets

  25. The meters indicate power in from Talquin Electric (on left) and power produced by the panel (on right)

  26. Data Monitoring • Energy Whiz website-data is uploaded to the internet from the panel http://data.energywhiz.com/6-8/index.php?s=A (will be active by November 2012)

  27. Natural Gas (CNG) Buses • Watch the video: http://flix.quickrewards.net/watch/4309757/ • Air pollutants are not released, just water • Natural gas is much cheaper than diesel • Natural gas is found in the United States • Leon County is currently adding CNG buses to it’s fleet, reducing the diesel buses

More Related