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Where to get liquid helium and is it expensive? - Page 3  

post #21 of 34
Quote:
Originally Posted by mbudden;13320029 
Yeah, I know it could be dangerous is not handled correctly. I was just throwing it out there.



Yeah. redface.gif It would still be cool.

What about Liquid Hydrogen? lol.

Liquid Hydrogen is extremely combustive - there is a reason it is used with Liquid Oxygen as fuel for the space shuttle; Liquid Hydrogen is the reactant and Liquid Oxygen the oxidiser (duh) producing Water.
    
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post #22 of 34
A proper LHe dewar has two storage spaces. The outer space is generally filled with LN2 to act as a separation layer between the LHe and the outer walls of the dewar.

Also, liquid helium boils at arch quicker rate than LN2. For 15 pounds of dry ice, you need about 25 liters of LN2. You'd need much more than that for the same time period with LHe.
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post #23 of 34
Look for a video of AMD's first 6.5GHz Phenom II. They were using LHe. I'd like to call attention to the fact they had a constant stream of LHe going into the pot in order to keep it cold as the LHe boils WAY too fast.

It sure is something fun to look into, but way impractical.
post #24 of 34
K, my suggestion IF you go through with this...

Build a site, like a bomb shelter, Outside though... in a large back yard, etc. Seal it perfectly, Provide yourself a sealed independent skuba gear effect air tank setup. So you can go into this sealed environment, and work on "said" substance, except it has to be massively air conditioned as well for maximum coldness. ie personal freezer... This is a plus for managing it for the pc overclock or any other experiment. Just be damn careful with the use...

Yes you could find out more about best containment materials, etc, but my suggestion, easiest way, is shipping/receiving of hospitals and/or universities, as they deal with various liquid materials on a daily/hourly basis, that someone there would know who to order from...

My advice, just don't...

But best of luck, and RIP if passing out occurs (my condolences in advance).

- Le_Loup

P.S. I want to be put into your will, for 2 penny's, as I want my 2 cents back...
Edited by Le_Loup - 4/29/11 at 12:37pm
    
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post #25 of 34
Quote:
Originally Posted by Le_Loup;13321327 
K, my suggestion IF you go through with this...

Build a site, like a bomb shelter, Outside though... in a large back yard, etc. Seal it perfectly, Provide yourself a sealed independent skuba gear effect air tank setup. So you can go into this sealed environment, and work on "said" substance, except it has to be massively air conditioned as well for maximum coldness. ie personal freezer... This is a plus for managing it for the pc overclock or any other experiment. Just be damn careful with the use...

Yes you could find out more about best containment materials, etc, but my suggestion, easiest way, is shipping/receiving of hospitals and/or universities, as they deal with various liquid materials on a daily/hourly basis, that someone there would know who to order from...

My advice, just don't...

But best of luck, and RIP if passing out occurs (my condolences in advance).

- Le_Loup

P.S. I want to be put into your will, for 2 penny's, as I want my 2 cents back...

I would be much easier just to bench with it in an open garage or on a patio, covered area if it's raining. Bomb shelter would be a hell of a cool man cave though.
I asked about liquid helium when ordering an ln2 refill once, it is pretty expensive stuff, about 10x the price of nitrogen, didn't even ask about the dewar I would need after that.
    
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post #26 of 34
Quote:
Originally Posted by JacobKay97;13320257 
Liquid Hydrogen is extremely combustive - there is a reason it is used with Liquid Oxygen as fuel for the space shuttle; Liquid Hydrogen is the reactant and Liquid Oxygen the oxidiser (duh) producing Water.

Hence the joke...

the_more_you_know.jpg
post #27 of 34
You can't just pour this stuff like you do with LN2. You're going to need either a delivery system that can inject the helium directly into the cpu pot, as well as protective equipment, or you can use a helium cryostat (along with all the equipment that comes with using one, which is probably WAY out of your budget, but is a LOT safer than dealing with the stuff out in the environment.

We use a 4K cryostat in our lab for low temperature spectroscopy. It essentially requires a small Genie lift to hold it up, as well as a vacuum monitor, a temperature probe, the necessary compressors/refridgeration equipment, and a tank of compressed helium. It takes several hours to get down to temperature, but they can hold 10K or lower temperatures (you never really get to 4K) for extended periods of time. Also, the helium is recycled and can be used again since it operates in a closed loop. I'm not exactly sure how you can hook up a motherboard/cpu to the cryostat, though. There's probably other models that can do so, however i'm not too familiar with them.

Here's a wikipedia overview on cryostats.
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post #28 of 34
the place where i get my LN2 says they can get me liquid helium, but that its expensive. i think like 10$ a L or something. The problem are clod bugs, but on an AMD platform it might be different.
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post #29 of 34
This is what LHe will get you when overclocking... You need to be on AMD though as the blue chips will cold bug much hotter than what LHe can bring them down to.

[ame]http://www.youtube.com/watch?v=wB0JodKgZ0A[/ame]
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post #30 of 34
Quote:
Originally Posted by mbudden;13319845 
Why not some Liquid Oxygen?

I think liquid Dihydrogen Monoxide is a better bet.
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