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zabomb4163

Member
Joined
Apr 27, 2002
http://www.xtremesystems.org/forums/showthread.php?postid=292899#post292899
cryopump.jpg


Colder than Ln2... Will do 14K
This is setting on my kitchen counter.... it's a cryopump 2 stage displacer uses helium



Fugger has the heliumcompressor and all we have left to do is hook this baybe up... It Should do -180C @ 200W if I can the first stage displace to run at 100%.


Well I will try it in a month or so but it will do only [email protected] and if I am guessing correctly it will be around 200+W @ 150k -123C Really insulation will be a #@@$%@^.
This uses a 5 hp heliumscroll that removes the heat generated by the two stage displacer in the cold head in the pic. A displacer has a heat absorbing disk that will modulate at about 5khz in the head to transferr the heat from the cooling surface to the rejection surface this in turn s cooled by the heliumgas.
I think it's called the jenken cycle. Simmilar in function to a stirling displacer...


Really this is a cryo pump used to cool superconducting magnets in an mri imaging system. Nitrogen can't get as cold as this thing.
It will go to -259C or -434F

It will only cool a 1Watt load at those temps. -123C @ 200Watts though. I think Fugger has maybe $300 in it Ebay or something> Bought in pieces and now almost ready to go.
Actually a functional unit rebuilt is 5 to 40 grand depends on how many hours on it.
Sometime after Feb 1 need to do ces (consumer electronics show) first....

This is a cryo pump and is used in vacume chambers, this is a tame one there are cryo pumps that can go down to 2K ...-456.07
The other end of this is a five hp water cooled helium compressor, It uses absorbers in the discharge to get the proper density of hydrogen. This cryo pump will freeze nitrogen.
IBM has had CPU's at -200 and lower, they discovered that CMOS's switching speed is doubled at these temperatures.. what we are finding from the Ln2 guys is that around -120 something is happening that wipes out the processors. It may be that the dissimilar elements of the processor are contracting at different rates and this is the breaking point???

Not really, it is acryo pump, it does have two displacer pistons and two drive motors. One for high temp operation (40K) and one for low temp operation ( 14K ) It is simmilar in operation to a stirling engine in that it has a displacer to move the heat from the cold side to the hot side but it actually needs helium circulated through it to remove the heat from the hot side. For this it uses a a water cooled condensing unit running a five horsepower scroll compressor.

Jenkin/stirling... This is an ADP DE-202 and it is cooled with helium
Simmilar only they don't call it a stirling engine... Same principle.
Just add another one in front of that one and then have the heatrejection area cooled by a condensing unit (5hp)
I don't think the DE 202 has enough capacity to cool a processor, I Can't find any stats on this cryopump for -100 to -200C operation??? any Ideas... I am going to test it at this under a pelt load jus to see?? I will post results... The water cooled condenser that cools it is going to be hooked to my swimming pool which it currently at 39degF 36,000 gal so we'll see.



liquid helium setup. :eek:


*edited*

1c_1.JPG
93_1.JPG
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2560891724#ebayphotohosting

http://fugger.netfirms.com/c1.jpg
http://fugger.netfirms.com/c2.jpg
http://fugger.netfirms.com/c3.jpg
http://fugger.netfirms.com/c4.jpg
http://fugger.netfirms.com/c5.jpg
http://fugger.netfirms.com/c6.jpg
http://fugger.netfirms.com/c7.jpg

Last month I picked up a Cryo compressor off ebay for $100 without knowing too much info based upon auction.

Well much to my surprise it is a Helium cryo compressor in good working condition. Still under pressure.

Now I am making the decision to build a box to freeze or build a huge evaporator loop for GPU/CPU/Chipset/RAM

I will post a complete set of pics

This cooler was made to cool very very large electric generator. This unit was the spare.

Nothing special about the cooling lines as they are standard copper.

The compressor itself is water cooled

Im about a month away from having the unit mounted and wired into its spot in our new building.

We have a few engineers on staff who are complete boggled at the stuff I come up with. WTF can you do with -300c?
 
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f00t

Member
Joined
Oct 20, 2002
*wets himself*

sweet merciful Christ. I cant wait to se that thing runing
 

Chris_F

Member
Joined
Jun 30, 2003
Location
Columbus, Ohio
-180C @ 200W? That's like 24/7 LN2 cooling! :eek:

One thing, you say it uses liquid hydrogen? Tip: If it starts to leak, RUN!!!

;)
 

Deathmasher

Member
Joined
Sep 6, 2003
Location
Virginy
so correct me if I am wrong but pretty much this thing turns Hydrogen in to a liquid? If that is the case sign me up LOL
 
OP
zabomb4163

zabomb4163

Member
Joined
Apr 27, 2002
Deathmasher said:
so correct me if I am wrong but pretty much this thing turns Hydrogen in to a liquid? If that is the case sign me up LOL


Actually a functional unit rebuilt is 5 to 40 grand depends on how many hours on it.

thats 5 to 40 grand cost if you buy USED parts and BUILT IT YOURSELF. i'll do a quick google search to figure out how much a new one cost.



http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2580978845&category=45044 liquid helium compressor :p
 
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L337 M33P

Member
Joined
Jun 5, 2003
Location
TEH INTERNETS
o_O you really CAN get anything on eBay

What I am worried about is at 14K semiconductors cease being semiconductors and turn into insulators. The electron mobility in doped silicon increases logarithmically with temperature so I think the CPU just won't work :-/
 

Valk

Member
Joined
Oct 31, 2002
omfg.... I dont know how comfortable i would be in that guys house knowing that his pc is cooled by the same stuff that launches astronaughts into orbit.... jesus christ. would those temps ever do anything for overclocking? dont most chips have a top limit that cant be crossed dispite cooling?

aww man, that is certainly drool inducing but ****...
 

squeakygeek

Member
Joined
Jan 19, 2003
Location
University of Illinois at Urbana Champaign
Valk said:
omfg.... I dont know how comfortable i would be in that guys house knowing that his pc is cooled by the same stuff that launches astronaughts into orbit.... jesus christ. would those temps ever do anything for overclocking? dont most chips have a top limit that cant be crossed dispite cooling?

aww man, that is certainly drool inducing but ****...

I guess that's what we will find out.
 

Borisw37

Member
Joined
Aug 19, 2003
Accoring to a nifty graph in my Materials Science book, N-type semiconductors have a drastic decrease in free electron conectration (thus conductivity) at around 100-110K, thats -173c.
 

Chris_F

Member
Joined
Jun 30, 2003
Location
Columbus, Ohio
Valk said:
omfg.... I dont know how comfortable i would be in that guys house knowing that his pc is cooled by the same stuff that launches astronaughts into orbit.... jesus christ. would those temps ever do anything for overclocking? dont most chips have a top limit that cant be crossed dispite cooling?

aww man, that is certainly drool inducing but ****...

It uses helium, not hydrogen.