Renewable Energy Resources: Part 1

 

Renewable energy resources are being developed because we are running out of fossil fuels at an exponential rate.

The wind is produced as a result of giant convection currents in the Earth’s atmosphere, which are driven by heat energy from the sun. Wind turbines use the wind to drive turbines directly. The blades are connected to a housing, which contains gears linked to a generator. As the wind blows, it transfers some of its kinetic energy to the blades, which turn and drive the generator. The advantages are that there are no fuel costs and no harmful pollutant gases are produced. However, they depend on wind, if there is no wind, there’s no electricity.

Like the wind, water can be used to drive turbines directly. Wave machines use the kinetic energy in this movement to drive electricity generators. Another way of using the water is to build a tidal barrage over a river estuary to make use of the kinetic energy in the moving water. The barrage contains electricity generators, which are driven by the water rushing through tubes in the barrage. Hydroelectric power stations are dams built across a river valley. The water high up behind the dam contains gravitational potential energy. This is transferred to kinetic energy as the water rushes down through tubes inside the dam. The moving water drives electrical generators, which may be built inside the dam. Water produced energy is good because no harmful polluting gases are produced and tidal barrages and hydroelectric power stations are very reliable and can be easily switched on. However, tidal barrages destroy the habitat of estuary species and hydroelectricity dams flood farmland and push people from their homes.

23 Comments

  1. DoodleScience
    Oct 25, 2013
  2. DoodleScience
    Oct 25, 2013

    New video out!

  3. spiroslouis1
    Oct 25, 2013

    nice mate! Keep up the good work

  4. lesorax123
    Oct 25, 2013

    K.

  5. DoodleScience
    Oct 25, 2013

    thanks, will do;)

  6. Flobbled
    Oct 25, 2013

    the biggest problem we have with renewable energy plants is the amount of
    space they take up. e.g. a wide area around a wind tubine has to be
    completely empty because a. the danger of the wings or ice that forms in
    cold periods falling off and b. a wind turbine isnt as efficient went there
    are obstacles in the winds way and c. if wind turbines stand too close to
    one-another they create turbulences which can destabilise its structure. a
    few reasons why it is so hard to set them up correctly.

  7. DoodleScience
    Oct 25, 2013

    Yeah, I think the way forward is solar and fusion.

  8. Iuliu Pop
    Oct 25, 2013

    could you talk about thorium?

  9. S Nance
    Oct 25, 2013

    And we were saying Fusion was 50 years away…. 50 years ago When it
    happens, it’ll be great. Just need it to happen sometime before we run out
    of oil and coal…..

  10. Xolroc Lowell
    Oct 25, 2013

    No mention of solar cells?

  11. Xolroc Lowell
    Oct 25, 2013

    Problem with fusion is that the scientific consensus is that cold fusion is
    impossible and hot fusion involves pretty much making a star. Like,
    literally making a star. I think cleaner fission reactors (thorium!) is the
    way to go. Solar is currently expensive but research is being done (by many
    people including me!) into cheaper ways to make cells.

  12. masterredwood
    Oct 26, 2013

    solar may be expensive, but factor in, once gas gets so low, the price will
    be high enough that the once over priced solar panel starts to look Pretty
    good.

  13. Xolroc Lowell
    Oct 26, 2013

    Nuclear fission is probably the way to go; it’s cheaper anyway.

  14. puneet sohi
    Oct 26, 2013

    Very nice!

  15. Yawning Gull
    Oct 26, 2013

    bio-fuels?

  16. masterredwood
    Oct 26, 2013

    Well… the problem with nuclear is that we cant just dump the waist into
    our air like most fuels.

  17. Xolroc Lowell
    Oct 26, 2013

    That’s the beauty of thorium reactors; thorium’s decay chain quickly
    becomes stable!

  18. BigStuffedRhino
    Oct 27, 2013

    Good videos but endings could be better

  19. Sir Tenebris
    Oct 28, 2013

    love this, it’s like a very simple version of minute physics. i find minute
    physics to complicated. but yours is so much easier

  20. Emonga Minipete
    Oct 29, 2013

    Solar, Wind, Tidal, Wave, and Geothermal energy.

  21. Internet Opportunities Unlimited
    Apr 22, 2014

    Great stuff! Nice work. The public really needs to see more of this. Have
    you heard anything about a new system called Optimal Future Energy
    Deployment (it should be on Google)? I’ve heard some interesting things
    about it and my brother got some amazing results. I’ve also been searching
    for solutions to the problem of wind turbines killing birds and bats.
    Ultrasonic acoustics looks like a possible answer to saving bats, but I
    haven’t read anything lately about the best way to keep birds away from
    wind turbines. Have you heard anything?

  22. Glenn Hough
    Sep 2, 2014

    renewable that need to be recognize and use in the present to save the
    future…

  23. reduceelectricusage
    Sep 11, 2014

    Geothermal, wind, sun, wave, biomass.. are just some example of clean
    energy source…

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