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 Post subject: Re: Fusion
PostPosted: Sun Jul 16, 2017 3:19 pm 
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Nik_SpeakerToCats wrote:
IMHO, given that graph of the 'Triple Product', we're looking at 'mid century' before significant power reaches the 'grid'. And you'd probably need a convenient 'hydro-electric' project to jump-start the beast...
:( :( :(

Heating power required is about 10% of the thermal power generated by the reactor - ITER is roughly 50MW/500 MW, although this will go down with larger tokamaks. Lots of alarm bells ringing in that article - aneutronic fusion is a big part of that - but at the same time there are a couple of indicators that they aren't totally wacky, or are at least working along the right lines.

The big problem is that anybody who can make H-B plasmas work can also make D-D plasmas work (they're significantly easier) and while there is some neutron activation it's really quite modest and within the realm of conventional nuclear devices. That means anybody insistent on H-B fusion rather than D-D is probably doing so to suck in venture capital money rather than because they're serious about getting fusion power onto the grid any time soon.

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 Post subject: Re: Fusion
PostPosted: Sun Jul 16, 2017 6:47 pm 
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It's also a brag of ability. Bussard said a good use of a Polywell would be to retrofit an old coal plant with a D- D reactor and re-use the steam plant, which is a substantial part of the cost of any thermal power plant. There are a lot of benefits to lowering your neutron flux though, and burning boron would do that.


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