Doing the things cheaper.

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Gyaca
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Doing the things cheaper.

Post by Gyaca » Fri Sep 13, 2002 2:49 pm

For someones is dificult or expensive to get deuterium bottles and the necesary regulator. For this reason I have looked for a cheaper solution.
For less than 20$ is possible to get 20 g. of heavy water, that it is more or less 20 liters of deuterium. The heavy water has the advantage that is posible to store indefinitely wihtout losses. A simple electrolitical cell produce the deuterium in the quantity that we need and just on time. A fuel inyector from a car (from the scrach) with some improvementes, controled by the pressure metter and a simple electronic circuit, can regulate the presure inside the fusor chamber, at any value with a precission of a couple of microns.
The total cost of the system is less than 50$ and some hours of work. I think that this is afordable for everybody.

Gerardo Meiro

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guest

Re: Doing the things cheaper.

Post by guest » Fri Sep 13, 2002 5:29 pm

I am doing something very similar but to get precise
measurements I use a baisting syringe with the ccs marked on it.

Larry Leins
Fusion Tech

Richard Hester
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Re: Doing the things cheaper.

Post by Richard Hester » Fri Sep 13, 2002 6:11 pm

Though this approach (electrolyzing heavy water) is cheaper, you will get a fair amount (actually, quite a lot) of heavy water vapor into the vacuum chamber along with the D2, unless you use a cold trap.

JohnCuthbert
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Re: Doing the things cheaper.

Post by JohnCuthbert » Fri Sep 13, 2002 8:11 pm

Not sure if this counts as cheap, but you can separate D2 from water vapour with a hot palladium foil. H2 (and isotopes) diffuse through it

Tom Dressel
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Re: Doing the things cheaper.

Post by Tom Dressel » Fri Sep 13, 2002 9:39 pm

Geraldo:

Where did you get the D2O?

Tom Dressel

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Re: Doing the things cheaper.

Post by guest » Fri Sep 13, 2002 11:28 pm

I would think that a gas flow controller and a descecant would be necessaties for doing this.

Although a descacant filter is always a good idea for gas introduction into vacuum chamber.

Gas flow controller can be quite expensive however,...

DaveC
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Re: Doing the things cheaper.

Post by DaveC » Sun Sep 15, 2002 7:59 am

A dessicant is great for general gas drying, where you dont want to recover the water it traps. But for drying D2, electrolysed from heavy water, a cold trap seems better, since it allows the trapped heavy water to be recovered and reused.

A poor man's cold trap could do a tolerable job of drying using a rock salt and crushed ice pack outside a copper tube with baffles. Dry ice or ideally liquid Nitrogen, would better, of course.

the heavy water route sounds interesting.

Dave Cooper

Tom Dressel
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Re: Doing the things cheaper.

Post by Tom Dressel » Sun Sep 15, 2002 3:34 pm

Yes, heavy water sounds great, especially if one is considering a hybrid system using IEC to bombard a deuterium loaded palladium target.

Where does one get D2O?

Tom Dressel

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Re: Doing the things cheaper.

Post by guest » Sun Sep 15, 2002 4:27 pm

The following link is a supplier of Deuterium Oxide(D2o). At $385.00 for 1000 grams(minimum order) it is far more costly to go this way than to buy the Airgas $120.00 lecture bottle of D2.

However, the benifits of learning how to produce a D2o cracking device may indicate otherwise for the do-it-yourselfer.

http://www.isotope.com/cil/products/lis ... ?cat_id=71

Mark Rowley

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Richard Hull
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Re: Doing the things cheaper.

Post by Richard Hull » Sun Sep 15, 2002 7:25 pm

I'll do a total summary under a new title post.

"deuterium gas on demand - cheap"

Richard Hull
Progress may have been a good thing once, but it just went on too long. - Yogi Berra
Fusion is the energy of the future....and it always will be
Retired now...Doing only what I want and not what I should...every day is a saturday.

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