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Hydroelectric Power

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A New Spin on Energy What is hydroelectric Power? A way to use the force of falling water to create electrical energy At its base is the conservation of energy, from ... – PowerPoint PPT presentation

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Title: Hydroelectric Power


1
Hydroelectric Power
  • A New Spin on Energy

2
What is hydroelectric Power?
  • A way to use the force of falling water to create
    electrical energy
  • At its base is the conservation of energy, from
    gravitational potential energy to electrical
    energy

3
How does it work?
4
How does the dam work?
  • Controls the flow of water through the generators
    to create an organized flow of power producing
    water.
  • Generator works on the idea of a rotating
    magnetic field create a rotating electric field,
    thus creating alternating current

5
Parts of a dam
Penstock
Reservoir
Generator
Turbine
6
Benefits of dams
  • Create more power and is more reliable than solar
    and wind energy
  • Clean, renewable
  • Dams are a big cost, however once created they
    create cheap energy
  • 2400 of the nations 8000 dams are hydroelectric
  • Most dams are multipurpose flood control, water
    supply, irrigation, recreation, transportation,
    refuges for wildlife

7
Hydroelectric use
1 kWh, 3412 BTU
8
Hydroelectric power use
  • Hydroelectric power is concentrated mostly in the
    Pacific Northwest because it provides the best
    locations
  • 63 of hydropower comes from the Northwest
  • 7 of US energy budget is devoted to
    hydroelectric power, but it is decreasing
  • Hydroelectric dams create 9 of the nations
    electricity

9
Hydroelectric power use
  • 49 of renewable energy
  • Creates enough energy to provide for 28 million
    households

10
Hoover Dam
11
Hoover dam
  • Dam building started during the depression,
    which is when most dams began being built
  • April 30, 1931 March 1, 1936
  • Original Cost 49 million
  • Inflated Cost 676 million
  • Average energy created between 1947 and 2005 4.4
    billion kW hours.
  • Maintained by the Bureau of Reclamation

12
MONEY, MONEY, MONEY
  • Expensive to build
  • Hoover dam 676 million

13
LOCATION, LOCATION, LOCATION
  • Changes in elevation
  • High precipitation

14
(No Transcript)
15
JUST KEEP SWIMMING, SWIMMING
  • Salmon population is declining
  • Migration is disturbed
  • Pacific Northwest of North America
  • Food chain is affected no more yummy fish!

16
Steps taken to protect the fish
  • Fish ladders
  • fish-friendly turbines
  • Screens

17
ENVIRONMENTAL CHANGES
  • Flooding
  • 1) Controlling
  • 2) Creating
  • Deforestation
  • Carbon Dioxide
  • Methane gas
  • Global Warming
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