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AHHHH enone knows how to answer dis question?

  1. Oct 31, 2004 #1
    AHHHH...enone knows how to answer dis question????

    hey, i really need help with this question

    Most of Canada’s electrical energy is generated at enormous centralized
    generating stations that use a variety of fuels, mostly
    non-renewable ones. The generated electricity then enters a grid
    and spreads out to the consumers, who are often at great distances
    from the stations. Suggest an alternative generation and
    supply system for your area that may make more sense considering
    the variety of renewable energy resources now available.

    en one know how to answer dis question???? :confused:
  2. jcsd
  3. Nov 1, 2004 #2


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    No, because WE don't know YOUR area and what kinds of renewable energy sources YOU have available!
  4. Nov 1, 2004 #3
    Why do we have to burn fuels to produce electricity, especially regarding non-renewable ones??? There are a variety of renewable resources. A popular and widely-used alternative is hydroelectricity. It exploits the energy of moving water, like in rivers. The system works by building hydrocentrals where dams are built to produce a huge reservoir of water to provide constant flowing water even when there's drought. The water that is allowed through the dam falls in a cascade and drives a turbine which in turn drives huge generators. Similar mechanisms use tides and waves in the sea, and the wind power captured by windmills. In all these cases the moving water or air rotates turbines. Another renewable source of energy is simply sunlight, which of course abounds. Solar cells capture sunlight in black-painted tubes of water. To heat that water to the point of boiling, concave parabolic mirrors are used that focus sunlight. The resulting steam is used to rotate turbines which produce electricities for us.
    I don't know any other system, because there may be new innovations, but this might be enough.
  5. Nov 1, 2004 #4
    Of course we know that in Canada there are rivers and winds, and also sea tides of big amplitude. I may doubt about sunlinght, since Canada usually experiences bad weather, but that's an option also.
  6. Nov 1, 2004 #5
    yeah, it's simple really,
    just mention hydroelectricity, solar power - biomass plants, half my physics course last year was on this.
    Biomass is an odd one, as it involves leaving animal waste (we investigated chicken poo...thats the british education system for you) to produce methane, not sure of the equations etc, but i could look it up.
    Hydroelectricty (sp) is putting huge turbines in dams (locally possibly rivers, water falls etc...) and then converting the energy from the water pushing thru the turbines into electricity.
    Wind power, same idea as the hydroelectricity one, turbines turn like windmills turn and then that turning motion is converted into electricity - again, i could look up how, can't remeber off the top of my head...
    solar power, have no idea how this works, but i'm sure there are plenty of websites that can help you there

    good luck
  7. Nov 1, 2004 #6
    I think methane is not renewable in the same way as water, wind and solar radiation are. It is potentially renewable. But as you said, it's not a very cheerful alternative :biggrin: .
  8. Nov 1, 2004 #7
    I remeber it from year 11 geography, when we were studying the pokot tribe in kenya, i think - we looked into some forms of renewable energy they used, subsistance and all that...and they had a biomass pit, per say, and baisically they threw animal poo into it, it then heated up - lots of NICE methane was produced, syphned off and used to cook food. very clean methane, not so nice to clean tho...
  9. Nov 1, 2004 #8


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    Science Advisor

    This statement is false. From Encarta:
  10. Nov 1, 2004 #9
    Why couldn't these people cook the food with the wood they were using to heat up the biomass pit???
    Anyway any matter that traps chemical energy and that can be renewed can be burned to produce energy, to provide the means to rotate that blessed turbine... Including methane, wood, and so on.
  11. Nov 1, 2004 #10
    the sun heated up the biomass pit, i guess like a compost heap - why did i give biochemistry?!!
  12. Nov 1, 2004 #11
    I think that burning fuels, however renewable, is not a good idea as we are taking the environmentalist point of view. Apart from the risk of depleting them faster than being produced, it is more important to consider the fact that they contribute to the GREENHOUSE EFFECT. This is especially the case with methane production. Biomass (and the guts of herbivours especially) produce the methane gas which is by evidence one of the main gases that contribute to the greenhouse effect. Not considering the CO2 and CO gases that result after combustion.
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