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Forums
4hv.org :: Forums :: Electromagnetic Projectile Accelerators
« Previous topic | Next topic »   

coil gun, cooling down the coil(s) with peltier(s) or maybe even liquid nitrogen.

Move Thread LAN_403
Dédé!
Wed Jan 08 2014, 07:39PM
Dédé! Registered Member #4932 Joined: Thu May 17 2012, 01:42PM
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Posts: 59
True, but it's still awesome.
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2Spoons
Thu Jan 09 2014, 01:27AM
2Spoons Registered Member #2939 Joined: Fri Jun 25 2010, 04:25AM
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Posts: 615
Forget peltiers - they are bloody awful refrigerators. I would suggest you run a liquid cooling loop with a radiator and fan. Coils could run immersed in fluid to get best heat transfer, assuming use of a suitable fluid (eg vegetable oil)
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BigBad
Thu Jan 09 2014, 01:51AM
BigBad Registered Member #2529 Joined: Thu Dec 10 2009, 02:43AM
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Posts: 600
You have to go an incredibly long way to beat LN2 as a coolant for this. It's not THAT expensive either, a few pounds a litre or something.

And in coil guns, most of the energy is lost in the coil resistance, and comes out of the caps. So you can probably make the caps much smaller and cheaper and performance still goes up.
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Dédé!
Thu Jan 09 2014, 12:34PM
Dédé! Registered Member #4932 Joined: Thu May 17 2012, 01:42PM
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Posts: 59
BigBad wrote ...

And in coil guns, most of the energy is lost in the coil resistance, and comes out of the caps. So you can probably make the caps much smaller and cheaper and performance still goes up.
Or you can decrease resistance and induction and add more stages, am I right?
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BigBad
Thu Jan 09 2014, 02:18PM
BigBad Registered Member #2529 Joined: Thu Dec 10 2009, 02:43AM
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Posts: 600
yup
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