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pure Hydrogen oxygen

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Unread postAuthor: meatballs » Mon Mar 26, 2007 9:26 pm

Maybe there's some way to sleeve pvc inside of steel pipe so the steel never contacts the hydrogen but provides the necessary strength, since pvc alone is just dumb but the steel could become brittle.
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Last edited by meatballs on Wed Apr 25, 2007 3:15 pm, edited 1 time in total.
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Unread postAuthor: Killjoy » Mon Mar 26, 2007 9:39 pm

You could try sleeving pvc, but it would just be easier to use galvinzed steel pipe (available at almost all hardware stores), or order some aluminum or stainless steel pipe (though that might be expensive).
And the black powder question i do believe is very close to crossing the line about no discussion of solid propellents or whatever its exact wording is (Forum Rules).
However i will say that blackpowder can result in death or injury quite easily by someone who does not have experience, so it is in everyones best interests who have not tryed it to not pursue the possibilty of using black powder. It can produce high pressure quickly, and if ground extremely fine can result in massive pressure spikes that could even rupture normal gun barrels, which is why your not supposed to use ffff powder (not sure if thats the correct name, but its the super fine stuff) in reloading modern firearm cartriges or in muskets as the primary black powder load.
I apologize if i crossed the line about discussing solid propellents, just wanted to mention the danger aspect of it.
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Unread postAuthor: hi » Mon Mar 26, 2007 9:42 pm

What if you used a copper 1'' pipe that was sleeved with a bunch of couplers that was sleeved with a iron or steel nipple? It would be small and very strong.
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Unread postAuthor: Insomniac » Tue Mar 27, 2007 3:41 am

@Scope

Why are you using salt??? Bicarbonate of soda works just as good, if not better, and doesn't produce chlorine gas.
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I wonder how much deeper the ocean would be without sponges.
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Unread postAuthor: FeLeX » Tue Mar 27, 2007 7:56 am

Scope Insomaniac is right about the soda and yah use car battery charger. As for the unit just have one coil not as many as the Joe cell does and you will be fine. My unit is directly connected to the chamber through one way valve.
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Unread postAuthor: Scope » Wed Mar 28, 2007 5:44 pm

Yea i think im going to use baking soda... i actually found that you need to careful in what you use because some electrolytes when broken down with electrolysis will join with the oxygen and rob your system of oxy production


do you guys think this will work
if i used 2 separate water chambes with separate electrodes... like one in each... could i connect the 2 with really low resistance wire so that the oxygen and hydrogen production could run separate of each other..
Also my grandmother has pure oxygen bottled at 3000 psi, and she also has a machine that creates (for lack of a better word) oxygen... this can help me mess around with getting a perfect 2 moles hydrogen for every 1 more oxygen mix... because this is as easy as said with ghetto electrolysis
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Unread postAuthor: singularity » Wed Mar 28, 2007 8:45 pm

why not us a u shaped electrolysis machine like mine,
<img src="http://juliantrubin.com/encyclopedia/chemistry/electrolysis_files/Hoffman_voltameter.jpg">

separate chambers so i can collect hydrogen and oxygen seperately
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Unread postAuthor: paaiyan » Wed Mar 28, 2007 9:05 pm

Pressure has nothing to do with whether or not a combustion reaction will occur. Combustion would occur at half an atmosphere provided the contents are combustable. As for safety, if you've got access to steel pipe and welding supplies, go for it. If you're using sch-40 PVC, ABS, or so help me any low-end PVC, write a will before you test it.
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Unread postAuthor: Insomniac » Thu Mar 29, 2007 1:33 am

@paaiyan
You can't use steel! Hydrogen reacts with it. I think copper would be one of the best materials for this.
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Unread postAuthor: paaiyan » Thu Mar 29, 2007 7:49 am

Hydrogen doesn't react with steel unless it's in the form of an acid. Hydrogen gas doesn't do anything but blow up.
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Unread postAuthor: FeLeX » Thu Mar 29, 2007 8:27 am

Seriously why you all making 2 different chambers when you can make one and have an effing hose connected to the chamber or some bottle if you want to store it first. Seriously why you making something so complicated when it can be as easy as crap.
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Unread postAuthor: Fnord » Thu Mar 29, 2007 8:29 am

http://www.techplate.com/hydrogenembrittlement.html
From what I gather here hydrogen does not have to be in an acid to affect steel. I dont know what effect hydrogen will really have as far as weakening a chamber goes, but if something as simple as sleeving pvc or even painting the inside will help, why not do it just to be safe?
Hydrogen embrittlement would be a good test for noname to add to the list.
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Unread postAuthor: paaiyan » Thu Mar 29, 2007 8:38 am

From what I gather, the most susceptible materials are hardened steel. This phenomenon is, however, something I've never heard of. I was speaking from a chemical standpoint, I was saying that the two will nto chemically react. I will look into this a little more later on.
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Unread postAuthor: Hotwired » Thu Mar 29, 2007 8:53 am

The embrittlement thing with hydrogen/steel is being exaggerated here.

We're talking about constant contact with hydrogen over YEARS.

PVC degrades and becomes brittle much faster than that through sunlight (UV degredation).

While we're on the subject, copper becomes increasingly brittle from work hardening which could be from cycles of being pressurised and depressurised.

There are also varying degrees of brittleness... how long would you like to wait for metal pipe to become brittle enough to shatter?
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Unread postAuthor: singularity » Thu Mar 29, 2007 5:41 pm

i have made 2 chambers on my electrolysis machine because i wanted to make a propane/ oxygen cannon also, but i didn't feel making a second machine, this way i can harvest the hydrogen and oxygen separately.

so do we all agree normal steel pipe will be fine to use? or do i have to get galvanized steel or paint it?
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be sure to check out my <a href="http://www.spudfiles.com/forums/ak-style-airsoft-vortex-gun-t10959.html">AK Styled Vortex Gun</a> and my <a href="http://www.spudfiles.com/forums/at-4-t9627.html">AT-4 Rocket</a>

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