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Projects by members => Projects by members => Dave => Topic started by: Dave on January 08, 2011, 18:08:58 pm
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my tube cell is pretty simple. The ouside of the outer tube is powder coated, the inside of the inside tubes are capped. The cell doesn't have spacers between the tubes; I simple used some 3/4" pvc male addapter and drilled some holes in it to let water in and gasses out. I can get high voltage across the cell whens its not underwater(300volts) The next thing to try is to apply high voltage when the cell is under water. I'll post back with the results :)
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Hi Dave,
Looks good!
So, you hit it with the ignition coils?
Steve
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hello steve
yes i've been trying an modified ignition coil with little success. I haven't been able to get more then a few volts across the cell when it is in water.
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hello steve
yes i've been trying an modified ignition coil with little success. I haven't been able to get more then a few volts across the cell when it is in water.
Hi Dave,
Just have a look on how Tony is getting hv across his tubes....
Steve
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thanks Steve, i havent had time to read through all the info on this forum yet. Tonys 8XA replication looks promising, i think ill try to build my own in a few weeks when i'm home from school again.
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I'm tired of just throwing this cell in a bucket of water so i'm going to try to design something to put it in. Hopefully something that can withstand some pressure.
I'm also going to insulate the exposed parts and wires with high voltage red varnish, i just bought a case of 12 cans. I need to find more things to insulate haha
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Good idea...
i would no go for a closed cell, if it works suddenly it can explode... be careful
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yeah sounds like a bomb right haha
I'm designing the end caps to pop off if something like that happens. I'm not planning on putting it under pressure any time soon, and if I do I wont be anywhere near it!
heres a picture of the cell. just about ready to be dropped into the housing.
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Well I have a week off from school so I’m going to try to get as much done as possible!
My test cell is pretty much done. I know it’s not the neatest thing in the world but it will serve the purpose. I gave myself a lot of options with this one.
I have two optional ground connections for the inner tube and/or water. I took the inflation part of an old bike tire, so now i can put the cell under pressure using an air pump or whatever. The cell is designed to have water pumped through it. I'm just waiting on the one way valve to come in the mail, but I have constructed the pump system. I also found a cheap hot tube pressure gage but it’s only meant for water; that’s why I mounted it at the bottom. Hopefully in the next few days I’ll have something cool to share, but then its back to school till summer.
Here’s some pictures
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heres a better picture
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it works pretty well, not sure how to insert the video into the text box but heres the link
http://www.youtube.com/watch?v=SKXMQZWV_Rk&feature=mfu_in_order&list=UL (http://www.youtube.com/watch?v=SKXMQZWV_Rk&feature=mfu_in_order&list=UL)
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Got the pump hooked up, forcing water through the tubes does some cool stuff!
I think this is one of the reasons Stan's system could go through 5 gallens an hour.
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http://www.youtube.com/watch?v=3ipfxwu40Ow (http://www.youtube.com/watch?v=3ipfxwu40Ow)
made a video of my tube cell producing with and without the pump
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http://www.youtube.com/watch?v=3ipfxwu40Ow (http://www.youtube.com/watch?v=3ipfxwu40Ow)
made a video of my tube cell producing with and without the pump
So, no major improvements with the magnets, Dave......... ;)
Well, you did see the improvement of the waterpump .
Not a bad score ;D
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I did some tests a while back with forced water circulation through the water capacitor to see if it would reduce the leakage current.
The leakage current was the same with and without the water circulation. Even with a pump that forced a large volume of water through the capacitor.
I think Meyer's circulating system reduced leakage current, but only because it pumped the water through an electrostatic filter.
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Thanks Steve I'm happy with it :)
HMS what kind of electrostatic filter was Stan using? was it similar to an air filter?
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It was similar to an air filter but required a vic to limit leakage current.
It's mentioned in section 3 of the tech brief, there is also a drawing
of it in section 3. I also have a picture somewhere of stan's where he
labeled all of the components including the filter.
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@ hms I will look into that, I've heard of it before but never read about it from stan I don't understand everything your saying? Is there current/voltage applied to the filter in some way? I bought one them a few months ago but it was just a filter. I personally thought it was just removing impuritys in the water?
if it's differnt from this please let me know!
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There is a current limited voltage applied to the filter to remove
contaminates. Removing the contaminates lowers the conductivity
which improves the efficiency a little. Although the vic is designed to
limit leakage current the filter also helps a bit. I think other reasons for
the filter are to prevent the contaminates from getting into the
engine and causing wear and other problems.
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Ok! So its not an ordanary filter! I will look Into it
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(http://i51.photobucket.com/albums/f389/xbradkx/electrostaticfilter.jpg)
(http://i51.photobucket.com/albums/f389/xbradkx/DuneBuggyEngineViewDiagram1.jpg)
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I did some tests a while back with forced water circulation through the water capacitor to see if it would reduce the leakage current.
The leakage current was the same with and without the water circulation. Even with a pump that forced a large volume of water through the capacitor.
I think Meyer's circulating system reduced leakage current, but only because it pumped the water through an electrostatic filter.
you might be right on that.
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I think so. I thought the circulation would reduce the leakage current so I performed the test several times. Each time my measurements were the same with and without water circulation.
With tap water and 12V applied I had 15mA leakage with and without circulation. Distilled was 5mA leakage with and without circulation.
The leakage current will vary with temperature, water type, and applied voltage.
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That sounds very reasonable that the filter helps restrict current by removing contaminants.
In my own experement I see a 30% increase in current when the pump is on.
@Hms thanks for the info on the filter!
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So I was thinking about how I could build this filter when I realized I already have something very similar! If you watch my last video about pumping water through my cell you can see a PVC pipe hanging off the side of the cell with tubes hooked up to it. I built this for electron extraction experiments but it is pretty much the same thing as stans filter! in the tube is stainless steel whool. It sort of forms a capacitor because their is a positive and negative side with spacing between that gas or water can flow throught.