I would be interested to know all about how you build/get an airtight enclosure and also how you insulate the casing with all the wires coming out.
As they say - you learn something new every day.
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Hi there, I think that in the next three months the final build will be up and running and ready for show, I shall put up a post and reveal all in due course, can't give too much away just yet :D
I have just finished 4months of testing on version1 and the results were well above what I expected, it's all a bit rough and untidy the test bed but the final version should be very neat, may even build a beer can cooler into it for those long winter nights playing games..
Will update with more info and pictures very soon!
I think the idea of building a unit like or better than the one that is 900 dollars is a great idea. I was wondering if there's some parts list that we could create? I am really not sure about this, nor have I ever delt with refrigeration. I think perhaps a parts list and details on where to get the parts would be a good start for us newbies :) .
Where you get it???
I dont know how small it has to be, but if you want to use tubing you dont necessarily need a compressor, just a pipe w/ a fluid in it. (aka Heat Pipe) Add fins at the cool end and maybe a fan to condense the working fluid.
I wish Stirling Coolers could be mass produced already. Using one of those cooled a 300 Degrees C computer for the military. (Before they had a messy spray some mixture cooling method) And a quote from the engineer who designed that military application "You could run a 3GHz processor at 15GHz"
While still expensive $500 bux for 100 W Stirling Cooler (100W lift at O C) and i dont know if 40W is available (what i would use), i would just use that coupled w/ a heat pipe and it would be a done deal.
back to the Nitrogen. a well ventilated area should be used for safety since one pure wiff supposedly will make your body think it doesn't need to breathe & you won't. i'm still alive so i can't speak from experience.
EDDC :D
Not quite, pur N2 will not trigger the alarms in your brain that let you know you aren't geting oxygen, thus you wont panick, you'll simply pass out, and unless you get air you'll die from no O2. Your body never evolved an alarm for N2 due to the abundance to it in the air, only CO2 will set off our inbuilt alarm.
Flooded system
I was thinking of completely submerging a PCB in a pressure vessel and using circuit board laquer and maybe foam filler on the main board to insulate the board electrically. Exposing only a passive heat sink to the refrigerant. Without testing I can almost see some kind of chemical reaction taking place. I do know of a liquid that is used in the particle accelerator of the ANU that is non-conducting. I am unsure what kind of properties it has as a refrigerant, but it does boil at room temp as they have to pump down the system on a yearly basis for maintenance.
Glycol
My other idea is to use a glycol system from a beer chiller to pump through a standard water cooler. Set glycol temp, start pump isnt that ez'r?? Short of that, I have an orange juice cooler, commonly found in service stations that i may use for the glycol.
Phase change
Again using the circuit board laquer and foam filler, to avoid the question of condensation (also that upgrades are impossible once system is set up), I am thinking of drilling 1/4 inch(or smaller) holes through a passive heatsink and doing the whole tx thing, by extending the copper just far enough away from the alluminum to avoid melting. Or try to get a copper cooling block.... Electronic tx valves running off a bridge rectifier should work for tx controll, if u can get a small enough valve. I am not really concerned about flexible hoses, as this system is not able to be upgraded once installed.
did you post blind folded or did you roll dice and then go "Ah HA that thread has nothing to do with what I want to say so I'll say it any ways as the dice landed on 2!"
How did you manage to join up even?
Please read the posting rules and be for hitting "Submit reply" look at the thread does it make sense what you say there? If not make your own new thread.
FYI You'll seriously regret the day you attempt submerged nothing but prblems and bills.
http://www.ocforums.com/showthread.php?t=494311
http://www.ocforums.com/showthread.php?t=373263
Now in the future make your own new thread please!
Why don't you use liq nitrogen for the cooling block on ur chip, but instead of just watching it evaporate just condense more out of the air? It would use a lot of power though. Just a thought