Flash cooler below ambient np & some ?

[kms]

Well the flash coolers regassed & plumbed in, after a quick garage test it made ice real quick so 1st of all i ran the two exchangers in series expecting some good results but only a couple of degrees down on normal ??? but it still made ice (even at 50/50 water/glycol) ?? Now thinking the heat exchangers where fubar i decided to rip one out (kind of Jess'es idea though) & stick a submersible straight in. Within 5ish minutes i was down to 9C water temps at full load (Seti) and still falling but i was getting condensation all over the Z4, stuck some neoprene in quickly just below the Z4 and only dared run another 5 mins (hit water temp of 6C) and the condensation was too much. I think this has the potential to take water temps well below zero as atm the deep rad is still plumbed (covered in condensation too) so the rad is trying its hardest to raise the water temp back up to ambient and the cpu is pumping a good 100W into the water also. Once i've greased up and applied neoprene everywhere i'll try in anger again (atm i run for 10mins, off for an hour, run for 10mins etc :D) & see what she'll do, its pretty quiet now so once i've gained confidence in it i'll remove the rad and run the flash cooler inline to the Z4. The present setup uses a maxi jet pump in the flash cooler to the block > rad > back to pump / cooler and is 1/2" dropped down to 3/8" so i can measure water temps. The final setup will be all 1/2", no rad & an eheim 1250, & maybe a pelt so sub zero zif temps np :D will post some pics soon :) :bannana:


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some quick pics as it is now (thown together) will post more once complete & tidied up :

the now redundant pump /res combo, the deeps still inline atm though

http://www.pclincs.co.uk/Images/Misc/chiller1.jpg

The top of the chiller with lid removed, the 2 black round things at bottom left are 2 agitator pumps, no need for them with a submersible in there so they'll come out and thats where the eheim 1250 will go. The big black thing in the middle is the remaining heat exchanger, the gap below is where the other one was & now where the maxijet pump is, the return line is at the right of the pic and was the old overflow. Originally the two exchangers where used in series but results where poor. There are 3 temp controls one input to each exchanger, they now dangle in air so the cooler will work hard, the other measures bath temp.

http://www.pclincs.co.uk/Images/Misc/chiller2.jpg

A shadowed front shot of the chiller with one of the exchangers removed, bottom right is the overflow which is now the return from the rad & also the inline temp probe (bottom right)

http://www.pclincs.co.uk/Images/Misc/chiller_front.jpg

A picture of the Z4 and condensation after about 10mins running, the zif temp goes below ambient in about 4minutes, ambient presently 28C, water temp 8.1C (after 10min) and the water temp started at 39as the system had been running for a couple of hours at full load with the chiller inline but no fans on the rad. The black below the Z4 and coming outwards is a wedge of neoprene as a quick fix until its greased and neoprenes on properly.

http://www.pclincs.co.uk/Images/Misc/condensation.jpg

& the water temp after 10min from 39C originally :

http://www.pclincs.co.uk/Images/Misc/water_temp_10min.jpg

[lechumbl]

Hi kms,

If you get disgusted about doing this project, feel free to send me the parts and stuff, and I will make/test it for you for a couple of months. :D

Sounds like you are having fun.

Take care........

[Player0]

Looking very good :) Have you insulated the CPU socket and all?

You mght want to try a different CPU block as well :)

[kms]

lol @ Lee, made a little more progress : :)

Plumbed it in with the eheim & left the rad in series to begin with but the condensation on the rad was incredible & dripping quick! so had to remove it. Its now straight from the submersed eheim to the block & then back to the chiller. At full load it gives the following water temps :

http://www.pclincs.co.uk/Images/Misc/water_temp_1hr.jpg

I've put neoprene & dialectric grease behind the mobo, under the zif, on the zif, on the pins, on the mobo etc but havent done the outside neoprene yet. Creating a fair bit of condensate! :D The Z4 inline :

http://www.pclincs.co.uk/Images/Misc/direct_to_Z4.jpg

The flash cooler with the other heat exchanger ripped out, the agitator pumps & a couple of panels ripped out. The eheim's submersed on the left, the return from the block goes under the cooler matrix right to the back (on the right hand side).

The overflow pipes an overflow pipe again the other connection pipes have gone. Its all 1/2" now, the 3/8" inline temp probe (T-piece) dangles in the water next to the eheims suction, so its effectively the water temperature going to the block. Will box it all in soon.

http://www.pclincs.co.uk/Images/Misc/chiller_eheim.jpg

The taskbar showing full load (seti running), the ambient temperature (in black) of 28C (ambient measured by a probe from mobo RT2 a distance out the back of the case) & the Zif temp in red 15C, so 13C below ambient :)

http://www.pclincs.co.uk/Images/Misc/toolbar.jpg

Another job to do is lag the pipes on the outside as they are dripping with condensation like mad, this next picture doesnt do it justice. Cant run it with the chiller on & unsupervised until thats done.

http://www.pclincs.co.uk/Images/Misc/condensation_pipes.jpg

[lechumbl]

Hi Karl,

Looks really good.

Once you get the condensation under control, and let that bugger run for a while, bet the temps drop some more.

Good job, you be the man!! :thumbsup: :worship: :thumbsup:

Take care.........

[Player0]

Yes, insulating the system will actually help reduce temperatures. You may want to consider thick-wall (1/8") silicone tubing. Its about $3 a foot, but should provide much better insulation for the tubes than vinyl. Youll probably want to use tube insulation on top of that.

What speed/voltage is this CPU at?

Sealing that resevoir should help too :)

[kms]

i'll get some pipe lagging tommorow hopefully, might have some ocpc silicon tube soon so will try that, its an XP1800 @XP2000, 1.85V will try some more MHz soon though a new chip may be on the cards soon anyway. I'm thinking of some thick polystyrene about a cm above the water level then the normal lid to box the res in should help temps some :)

[WesM63]

Hey KMS,
Looks good.. temps are really LOW.. looks like fun..

Good Luck.

[kms]

a little more progress :

partly lagged now, just had enough to do all the outside pipe, still need to lag inside the case & neoprene the outside of the block

http://www.pclincs.co.uk/Images/Misc/lagged1.jpg

4 layers of bubble rap should insulate the chiller enough :

http://www.pclincs.co.uk/Images/Misc/lagged2.jpg

Lid on (still needs a clean up :D) - fill hole front left. :

http://www.pclincs.co.uk/Images/Misc/lid_on.jpg

& the chiller in situ, even though the vent at front right is air being drawn in, the heat radiated is pretty high so i'll need to think of something there.

http://www.pclincs.co.uk/Images/Misc/chiller_in_situ.jpg

[Player0]

Its a monster hehe :)

[kms]

had to post this 1st sub zero water temp (the laggings done the trick) :

http://www.pclincs.co.uk/Images/Misc/water_temp_subC.jpg

caught the screen to show seti still active, temperature still going down as well -0.7C as i type this, with 26C ambient & 13C Zif temp

:thumb:

[dicki]

that is sweet karl... i gotta say though that your delta t looks pretty high... i'f i'm reading all that right it's about 14-15c... if you can get it down to 10c then you'll be flying along :)

the main reason i went for goo is so that when i super cool the chip i don't have any condensation problems because everything will be dunked anyway... as soon as the fridge is in we'll have a race to -20 :D

[kms]

yeah its about 13c, i think a pelt would sort it :D Without some fiddling the best i can get out of it is -2.7C then it cuts out the chiller, cuts back in at +0.1C, but i'm happy :)

[Player0]

The real trick is seeing what the delta T is at 1800mhz and at 2.00 vCore.

Your dT is much higher than it could be otherwise. Mines 11c but at 300-400mhz and 0.25v more than you as well.

Zee Z4, she be holding yew back m8ee.

[kms]

i'll maybe try a swift pelt block (226W) in a few weeks, that should pull the cpu temp down. I filled under the cpu with dialectric grease i'm wondering if thats insulated the RT a little ? dT was lower with a rad ? Is yours with a pelt P0 ?

[kms]

update - had to dual loop it cos the heat in my room was way intense! Got a 2nd loop that kicks a 2nd pump in to a rad at 20C, so when i kill the chiller (for me to cool down!!) the machine can still run 24/7. Means i cant keep her clocked as much :( but should get some more run time in the winter :)

Next stage is to strip the compressor, chiller bath etc & mount it all in one huge desktop stylee case with my pc hardware. Anyone any ideas for what to use ? any huge cases out there ?

TIA

[Player0]

i bought mine at servercase.com. Not sure if they ship to the UK...but huge cases at cheap prices.

Good luck with it all :)

[tripodal]

build it into the desk :)
use some dryer vent tubing to direct the hot air outside :)

[kms]

thanks for the link P0, will check it out :) Trip you've stole 2 of my thoughts though i'd given up on the desk one through lack of wood working skills, still giving a lot of thought to getting that XS heat outside though :)

[tripodal]

woodworking skills would be required for a pretty finish. but anyone motovated eneough can learn the skill

[kms]

hmmm motivations never been a problem when i set my mind to something, its just time atm :( :)

[tripodal]

pretty much the same here, at least tommorow i will have my g/f giving me a hand on the ghetto supercomputer

[dicki]

wow pretty and interested in computers! could you possibly ask for anything else?

[Farabomb]

Originally posted by dicki
wow pretty and interested in computers! could you possibly ask for anything else?

Yup, Does she have a sister? ;)

[mdzcpa]

Wow...must have missed this thread earlier....looks great there Karl:) That's one monster rig!

Keep up the good work. Looking forward to seeing how you finish that system off. I kinda like the desk idea too, but a nice big case would be neat too:)

[tripodal]

yes but not nearly as worth it.
and they look nothing alike.
LOL

Originally posted by Farabomb


Yup, Does she have a sister? ;)