Frozen Path. Sub-Zero Cooling Club. - Page 722 - Overclock.net

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post #7211 of 7327 Old 09-30-2016, 09:31 AM
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post #7212 of 7327 Old 09-30-2016, 03:15 PM
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Originally Posted by Red5 View Post

Hey guys. General LN2 question, I hope this is the right spot to ask.

I've done some CPU LN2 benching previously but am soon going to be doing CPU and GPU together. I have read this requires a lot of LN2 so I have been researching renting a tank from Airgas, probably 180L.

My question is that I see they come in many different pressures (22psi, 35psi, 50psi, 230psi) and I'm not sure which would be ideal. I will be dispensing LN2 from the large tank into a 10L dewar, then to thermoses for pouring. I assume that I want the lowest pressure possible for my uses, so the 22psi but I haven't dealt with the larger tanks in the past and any advice would be great.

Also, I noticed they come in grades (food grade, medical grade) and I assume I should just get whichever option would be cheapest, is this the right thinking?

Thanks in advance!

My tanks come 22 psi, today I got a 35 psi tank but the guage only says 20 psi, stupid place sent me 160 instead of 180. For me it's better because it becomes cheaper when you get 180L, so what I did was find 4 really cheap dewars on ebay.

So I can use 2 dewars on the weekend and then fill up my 4 and I can empty 180L in a weekend and return to the welder without paying rental and usually still have 4 full tanks.

The problem with a 10L dewar when doing cpu and gpu is that it will go so fast and you would have to take a break to refill the 10L tank, which isnt good. But like Mike said depends on platform. Like some older platforms and like my i3/gt 710 setup or i3/rx460 setup or g92/g80 gpu's, 10L might do ok.

I found a hose on ebay for like $60 so I never get charged for that now, it's lasted fine for almost 2 years.

Also ask for industrial grade, you dont need medical or food, which is cleaner and more purified.

It really depends on what they charge rental for the 180L, but it also wouldnt be convenient to drive there and only fill up 10L everytime, so big tank is probably best option.

I also never use a phase separator on end of hose and works fine. If they have a couple small dewars you could borrow that would be best, like 20-30 liters My welding place did that for me a lot.
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post #7213 of 7327 Old 10-02-2016, 08:13 AM
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All about relationships with the supplier for LN2. A lot has to do with risk of renting or having expensive cans out to unknown people. You pay extra for that and most will require crazy deposit. Cans are rented by month and if you get it back before, can eliminate rental charge. The longer you deal with supplier, the better the rate will most likely get. Best way for individual is find someone with access or owns business that uses it and willing to let you skim for some cash.

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post #7214 of 7327 Old 10-02-2016, 05:15 PM
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Originally Posted by hotrod717 View Post

All about relationships with the supplier for LN2. A lot has to do with risk of renting or having expensive cans out to unknown people. You pay extra for that and most will require crazy deposit. Cans are rented by month and if you get it back before, can eliminate rental charge. The longer you deal with supplier, the better the rate will most likely get. Best way for individual is find someone with access or owns business that uses it and willing to let you skim for some cash.

ya like you said it totally depends on the supplier and relationship.

My supplier is considered a "mom and pop" in there industry so they are able to accommodate you differently then a bigger corporation like airgas. They used to lend me there 3 - 25L brand new taylor whartons without a deposit. And I give $250 deposit for 180L tank and driver brings back the cash at pickup. It's pretty convenient. I just send an email the day before and the tank is there the next day. $1 a liter delivered.
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post #7215 of 7327 Old 10-03-2016, 05:49 AM
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Originally Posted by DR4G00N View Post

Bah, I wish I could get LN2 for as cheap as you guys. The Praxair near where I live want's $9/L. eek.gif
I have yet to call Air Liquide to see what they want for it, maybe it will be cheaper there.

That sounds about right sadly mad.gif

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post #7216 of 7327 Old 10-03-2016, 06:06 AM
 
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Where can I get ln2 in uk ?
I have email a few places with no reply

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post #7217 of 7327 Old 10-03-2016, 06:44 AM
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Quote:
Originally Posted by richardbowers View Post

Where can I get ln2 in uk ?
I have email a few places with no reply

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post #7218 of 7327 Old 10-03-2016, 11:55 AM
 
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Cheers mate

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post #7219 of 7327 Old 10-03-2016, 04:11 PM
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was buying more thermal paste and saw this, it's pretty cool. I would rather invest in ddm or rockit cool but it's a decent option.

http://www.performance-pcs.com/skylake-cpu-de-lidding-tool-rental.html
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post #7220 of 7327 Old 10-05-2016, 08:26 PM
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Made myself a little GPU DICE pot out of some old coolers.

As you can see it's more function over form. tongue.gif It weighs around half a kg so it should work decent at the very least.

Just need to do a few little tweaks here and there and it should be good for a test run.




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