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Thorium Instead Of Uranium: Solution To Our Energy Woes?

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Re: Thorium Instead Of Uranium: Solution To Our Energy Woes?

#71
post #42
post #34

Earlier quoted context omitted.

France is using some of their nuclear plants to provide peak load, and they adjust the power output of most of their plants over the day to better fit the actual usage. Their reactors are not ideal for this; there are better ways to design nuclear plants for load-following. But it can certainly be done. Alternately, you could make enough nuclear capacity to provide your peak power levels all the time , and dump exces…

Alternately, you could make enough nuclear capacity to provide your peak power levels all the time, and dump excess energy into some energy-hungry industrial process, like aluminum smelting, or synthetic fuel production, or ammonia synthesis Heck, you don't have to do anything with it, just disconnect your turbines from your generators.

Good idea on the face but the energy needs to be dumped somewhere and dumping that much excess energy is tough and costly. Used to work in the industry, if the turbines tripped or anything else happened along the way, you SCRAM immediately as a safety precaution.

Re: Thorium Instead Of Uranium: Solution To Our Energy Woes?

#72
post #30

Earlier quoted context omitted.

It could be a plausible solution to our electricity woes to a degree. Mainly in baseload electricity supply which is about 60% of the U.S. grid. Small liquid flouride thorium reactors (LFTRs) can fit on a flatbed truck and mass manufactured. The idea is that we can connect these to existing coal plant secondary systems around the country and replace the coal boilers. Thorium is extremely abundant. We have 3000 tons o…

If we can get the cost per megawatt of capacity low enough, liquid fluoride thorium reactors could even be used for peak power. They can scale their power output up and down pretty rapidly, since they would use Brayton-cycle gas turbines for power conversion, and it's possible to continuously (or very frequently) remove xenon-135, which is a neutron poison and has traditionally made it harder to adjust the power outp…

Isn't it wonderful how we've barely scratched the surface on what potential fission has?

Re: Thorium Instead Of Uranium: Solution To Our Energy Woes?

#73
post #55
post #54

Earlier quoted context omitted.

Where would the U-232 contamination come from, if it's bred U-233? Does thorium also just sometimes decay into the lighter isotope?

Sometimes the thorium, when it absorbs a neutron, will emit two neutrons and turn into thorium-231, which decays (though a couple more isotopes) into U-232. It can also be formed when U-233 absorbs a neutron and emits two, forming U-232. How hard this would be to separate depends on the type of LFTR design you're using. However, you could also include some thorium-230 in the fuel mix to denature any protactinium prod…

What about this?

http://www.technologyreview.com/blog/arxiv/25855/?ref=rss

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