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how much heat does a farnsworth-hirsch fusor generate? Answered

i have been looking at farnsworth-hirsch fusors and was wondering how much heat they generate.

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steveastrouk (author)2010-02-24

How much power do they consume, typically ? The things are not over-unity ! A small one consumes a few hundred watts at the most I should guess.

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NachoMahma (author)steveastrouk2010-02-25

.  From what I read on the Web, a DIY fusor requires little power - it's an electrostatic affair. Things are getting hot, but there's not much mass. But I'm not sure that I really understand what's going on i there. Maybe someone that knows what they are talking about, like kelseymh, will chime in.
.  Looks like something a few Iblers would be interested in building.

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kelseymh (author)NachoMahma2010-02-25

Actually, Steve's the one who pointed them out to me.  They are very, very far from unity.  Any heat output is going to be ohmic losses, not "fusion."

Apparently you can get a few neutrons per second out of a tabletop model using D-T shots -- which does mean that you'd better do some sensible shielding, and not build one if you don't know why I said that :-)

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NachoMahma (author)kelseymh2010-02-25

.  Oh, I wasn't looking at it as an (over-)unity device, just something neat and sciencey (hmmm for some reason, spellcheck doesn't like that word heehee). Like your single-photon experiment.

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kelseymh (author)NachoMahma2010-02-25

Yeah, that's exactly what I thought when I read the Wikipedia article.  Farnsworth claimed it could scale up to an actually power-production unit, and there was apparently a DARPA funded project up to 2008 or so!  The high-school built unit (your link above) in the article really blew my mind.


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steveastrouk (author)NachoMahma2010-02-25

I wasn't sure, its can't be much power can it ?

Almost a shame they don't scale really.....

DIY fusion plant.

Steve

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