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Registered: 12-2008
Posts: 546
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Nuclear Fusion-Fission Hybrid


Nuclear Fusion-Fission Hybrid Could Contribute To Carbon-Free Energy Future

quote:

Physicists at The University of Texas at Austin have designed a new system that,
when fully developed, would
use fusion to eliminate most
of the transuranic waste produced
by nuclear power plants.
The invention could help combat global warming by making nuclear power cleaner and thus
a more viable replacement of
carbon-heavy energy sources,
such as coal.




article:
 http://tinyurl.com/ry886q


Last edited by AgnesW, 6/4/2009, 10:00 am
1/28/2009, 10:54 am Link to this post   Blog
 
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Posts: 546
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Re: Nuclear Fusion-Fission Hybrid


The scientists' waste destruction system would work in
two major steps. First, 75
percent of the original reactor
waste is destroyed in standard, relatively inexpensive LWRs.
This step produces energy,
but it does not destroy highly radiotoxic, transuranic,
long-lived waste, what the
scientists call "sludge."
In the second step, the sludge
would be destroyed in a CFNS-based fusion-fission hybrid. The
hybrid's potential lies in its ability to burn this hazardous sludge,
which cannot be stably
burnt in conventional systems.
"To burn this really hard to burn sludge, you really need to hit it with a sledgehammer,
and that's
what we have invented here," says Kotschenreuther. One hybrid would
be needed to destroy the waste produced by 10 to 15 LWRs.
The process would ultimately
reduce the transuranic waste
from the original fission reactors
by up to 99 percent. Burning that waste also produces energy. The
CFNS is designed to be no larger
than a small room, and much fewer
of the devices would be needed compared to other schemes that
are being investigated for
similar processes.


Last edited by AgnesW, 1/28/2009, 11:09 am
1/28/2009, 11:05 am Link to this post   Blog
 


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