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Just for the fun of it, opinions.... Liquid Oxygen

post #1 of 11
Thread Starter 
Alright guys, this is more hypethetical than reality at the moment. I work for a Respiratory Repair company and have axx to Liquid O2 and some dead portable units that are able to hold the gas safely. The reason I started thinking about this is that Liquid O2(LOX) is that it's ambient temperature is -297.3°F (-183.0°C).

The other thing with LOX is that it evaporates very easily/quickly. I can refill the unit by taking it to work with me or have two to rotate if there was a "quick-change" adapter.


This is a picture of the enclosed container:


Here's where the adaptation would have to come into play unless I could figure a way to keep evaporation to a minimum as the LOX warms through the coils to the internal portion of my case & to whatever block I could use to cool my CPU.


Comments? Ideas? Suggestions?

And NO!!! Oxygen isn't flamable itself without a heatsource & only causes the flame to burn hotter, so I'm not afraid of that issue!!!

Thanks guys!!!
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post #2 of 11
Well the thing is, is that oxygen is a gas that can be pressurized alot. (can't think now thats why I worded that funny) If you mess around with it, or don't open a valve all the way, or w/e it could very likely explode. Even though we breath it every day, oxygen under the right circumstances can be very dangerous.

So bottom line is, be careful for explosions. Read up on safety guidelines.

Other than that (since I am not very cooling savvy) I think it is a great idea!
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post #3 of 11
Thread Starter 
Quote:
Originally Posted by kagaos
Well the thing is, is that oxygen is a gas that can be pressurized alot. (can't think now thats why I worded that funny) If you mess around with it, or don't open a valve all the way, or w/e it could very likely explode. Even though we breath it every day, oxygen under the right circumstances can be very dangerous.

So bottom line is, be careful for explosions. Read up on safety guidelines.

Other than that (since I am not very cooling savvy) I think it is a great idea!
Well, there are two pressure releases on these units. I believe 22lbs & 30lbs as a back-up.. and lastly, there is a release valve on the bottom side.

Now, the only thing I think is going to be an issue is how to move the LOX from the tank through a cooling block & then back into the tank unless the evaporation pressure would do that?
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post #4 of 11
liquid O2 at normal atmospheric pressure cant exist... it will basically explode into a gas.. so unless u can find a way to keep it pressurised enough that it stays a liquid (at least for some ammount of time) its just not really possible to do...

liquid CO2 can be done though.. at room tempiture it would evaporite slower then liquid nitrogen.. but u wont get -100 with it.. liquid CO2 is what is in most compressed air cans.. thats y if u turn it upside down and shoot it on ur hand it hurts.. actually it freeses the skin on contact.. IE.. frostbite..
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post #5 of 11
Thread Starter 
Point taken Ace!

So in order for this to work, I'd need the following to happen:

1. Maintain constant pressure <22lbs throughout the entire system.

2. Find a way to "move" the liquid from the tank into the CPU block then back into the tank.

3. Manage to do the above with minimal loss due to evaporation as it warms.


Yeah, I'm doubting that this is worth the trouble but could produce some cool results.
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post #6 of 11
Even if you got it all working, the computer wouldn't boot because LO2 would would turn the CPU into a semi-conductor, essentially making it so it wouldn't boot. Someone tried Helium, and that's what happened.
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post #7 of 11
1. Oxygen boils higher then Nitrogen. Nitrogen is esier to deal with and will not explode at ambient.

2. The previous poster is somewhat correct. It will boot, but there is a chance that seceral key components, however small, will incorrectly resist current leading to no boot of the system even though the video card fan may work and etc. You can check if this happens by keeping the CPU fan plugged in to connector. If it spin upon start-up, the system will boot.
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post #8 of 11
To compress O2, N2 or H2 back into a liquid, you need a 3 stage compressor. They are big and expennsive.
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post #9 of 11
I would be worried about the hosing. To keep it liquid, you need a lot of pressure. Finding hosing that could withstand that would be hard. I would think having the end of the cannister right over the cpu and have it just out, having the air go through some short fixed pipes to cool the cpu. Might be awkward looking but could get he job done.

Also since you work with a company that uses it maybe you could also get hosing for it also. If thats the case find a cheapo computer and go for it!
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post #10 of 11
On the subject of hosing, stainless steel mesh reinforced woudl be fine. If you have liquid oxygen, chances are you have it already. Hosing will not burst. Would can break is where you would attach the evaporator (I assume you will be doing it with open loop but closed evaporator.) You can even use a thick rubber hose for a short trial (which will leak eventually due to cracks, but pressure would be no problem. The cylinder is very strong regardless. Trust me, I have tried it. Brass tubing is also fine. Pure copper tubing is prone to degradation if used for a long time.

I assume the liquid oxygen is free, as liquid oxygen is much more expensive then liquid nitrogen geiven that it must be extracted from the air in minute quantities.
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