FAQ: Heavy Water Electrolysis Deuterium Source

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Andrew Seltzman
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FAQ: Heavy Water Electrolysis Deuterium Source

Post by Andrew Seltzman » Wed Jan 26, 2005 3:25 am

I have just built an electrolysis and gas handling system for production of deuterium on demand.

http://www.rtftechnologies.org/physics/ ... olysis.htm

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Re: Heavy Water Electrolysis Deuterium Source

Post by Roberto Ferrari » Wed Jan 26, 2005 11:44 am

Nice set up!
The lecture bottle stores some pressurizing gas?
I don´t see any electric imput for electrolysis purposes.
Please, comment.
Roberto

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Richard Hull
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Re: Heavy Water Electrolysis Deuterium Source

Post by Richard Hull » Wed Jan 26, 2005 2:57 pm

Looks very cool. Let us know how it functions.

I assume the lecture bottle is to be evacuated to a deep vacuum and then back filled to atmosphere with the deuterium gas output of the generator as a reserve of dry D2 so the generator, itself, need not necessarily run during fusor operation.

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Adam Szendrey
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Re: Heavy Water Electrolysis Deuterium Source

Post by Adam Szendrey » Wed Jan 26, 2005 4:23 pm

I second that, looks really cool, and professional, and let us know how it works.
I can buy 25 ml of D2O for about 45 euros. That amount contains about 30-31 l of D2 gas. So i should definetly try an electrolysis approach as the fuel price dramatically drops. Given that i can use most of that deuterium up and only a very small amount leaks away or otherwise becomes unuseable.

Adam

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Re: Heavy Water Electrolysis Deuterium Source

Post by Roberto Ferrari » Wed Jan 26, 2005 6:32 pm

I wait Andrew's comments but the way this nice device is assembled, I think the output side of the two-stage regulator cannot be evacuated in order to empty the bottle. Probably we see two alternative D2 sources: the bottle or the electrolytic generator.
Roberto

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Re: Heavy Water Electrolysis Deuterium Source

Post by Andrew Seltzman » Wed Jan 26, 2005 7:11 pm

The lecture bottle contains Argon, I had some left over from my accelerator work, and was using it to pressure test the gas handling system. It can't be filled due to the regulator. I have thought of putting on a storage tank; however I haven't gotten around to that yet.

The black box in front of the manifold is the electric control for the electrolyzer. Power is connected to the bottom and is controlled with the switch in the front. The BNC connector on the bottom of the control box is for current monitoring. An internal 100 ohm resistive shunt provides 0.1v per mA of current draw for monitoring the rate of deuterium production.

I has a prototype that used a copper inner coil and aluminum outer electrode working perfectly some time ago, it is listed under the prototypes page in the fusor 1 documantation.

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Deuterium Source Operational

Post by Andrew Seltzman » Sat Feb 12, 2005 3:58 pm

The deuterium electolysis source operates pefectly, supplying a constant flow of deuterium to the reactor.

http://www.rtftechnologies.org/physics/ ... olysis.htm

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Re: Deuterium Source Operational

Post by Adam Szendrey » Sat Feb 12, 2005 9:04 pm

That's great news. Just a little and somewhat silly question. What material is the drierite (i'm not familiar with the word either, but i understand that it's used to dry the produced deuterium)?
Thank you!

Adam

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Re: Deuterium Source Operational

Post by Andrew Seltzman » Sun Feb 13, 2005 12:09 am

97% CaSO4
3% CoCl2

The CoCl2 turns from blue to red when the drieite is used up.

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Re: Deuterium Source Operational

Post by Adam Szendrey » Sun Feb 13, 2005 12:47 am

Thanks Andrew.
Would SiO2 (in silica gel form) be fine as well? I can probably get enough of the blue stuff, that turns pink when it's saturated (at the pharmacy where my mother works , there is a SiO2 desiccator).

Adam

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