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[MIT News] Clean energy could lead to scarce materials - Page 5

post #41 of 68
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Originally Posted by Rognin View Post

Umm that's exactly what thorium is?! (or am I missing something here?)

No, you've pretty much nailed it. Passively safe nuclear reactors. you could bury them in the ground encased in concrete, and when something goes wrong (as we all know it eventually will), it'll shut down and be about as inert as things get.
 
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post #42 of 68
Quote:
Originally Posted by u3b3rg33k View Post

Quote:
Originally Posted by Rognin View Post

Umm that's exactly what thorium is?! (or am I missing something here?)

No, you've pretty much nailed it. Passively safe nuclear reactors. you could bury them in the ground encased in concrete, and when something goes wrong (as we all know it eventually will), it'll shut down and be about as inert as things get.

Until the concrete erodes and you get 30 foot mutated earth worms...
post #43 of 68
Quote:
Originally Posted by kennyparker1337 View Post

Quote:
Originally Posted by u3b3rg33k View Post

Quote:
Originally Posted by Rognin View Post

Umm that's exactly what thorium is?! (or am I missing something here?)

No, you've pretty much nailed it. Passively safe nuclear reactors. you could bury them in the ground encased in concrete, and when something goes wrong (as we all know it eventually will), it'll shut down and be about as inert as things get.

Until the concrete erodes and you get 30 foot mutated earth worms...

I, for one, welcome our new 30-foot mutated earthworm overlords.
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post #44 of 68
Quote:
Originally Posted by kennyparker1337 View Post

Until the concrete erodes and you get 30 foot mutated earth worms...

at least with thorium reactors, the concrete will erode with super corrorisve hydrofluoric acid
post #45 of 68
Quote:
Originally Posted by Core2uu View Post

I, for one, welcome our new 30-foot mutated earthworm overlords.

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post #46 of 68
epic lulz, sir, epic lulz.
 
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post #47 of 68
maybe I'll never understand all these science

aren't there so many kinds of metals around? what's so special about those scarce metals that only they can get the job done?
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post #48 of 68
Just to point out, the problem in modern reactors isn't the fact "you cannot stop reaction" or whatever that would actually make the Thorium "safer" to prevent what we saw at Tchernobyl.

There is in every reactors of this earth control rods used to control the chain-reaction. You can completely stop the reaction in no time. In thernobyl, they used a fluid that explode in contact with water, I think it was sodium can't remember. The fuel melt and it's so corrosive that it fissured the reactor hence the explosion. Now we use water instead so no more tchernobyl and we understand why the reactors were melting down (they did a mistake and miscalculated the temperature at which uranium melt). The main big problem we have left is in case of a catastrophe scenario, we need to cool down the reactor due to the radiations emitted. Thorium is just another combustible to lower the cost of nuclear exploitation.

In every turbine you need a magnet to generate current. Permanent magnet unless you are using electromagnet but then I don't know how effective it would be to power your magnet to produce (more we wish) energy...
Edited by Just a nickname - 4/9/12 at 8:23pm
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post #49 of 68
Quote:
Originally Posted by HarrisLam View Post

maybe I'll never understand all these science
aren't there so many kinds of metals around? what's so special about those scarce metals that only they can get the job done?

resistant to strong acid corrosion and radiation. not very many metals out there we know that can do both
post #50 of 68
Quote:
Originally Posted by Just a nickname View Post

In every turbine you need a magnet to generate current. Permanent magnet unless you are using electromagnet but then I don't know how effective it would be to power your magnet to produce (more we wish) energy...

Well, it works. The reason it doesn't violate the laws of thermodynamics is that they are adding energy from the moving water.
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