[OC Maximus]

Originally Posted by Patch

I've seen acetone used in chillers, but it eats through stuff pretty quick.

.......not to mention the flammable issues......

Yeah, wouldn't want to end up like Pedro.

[Kal-EL]

When are you planning to go after it again?

[rickss69]

I was thinking maybe straight Jack Daniel's for coolant...

[OC Maximus]

Originally Posted by Kal-EL

When are you planning to go after it again?

Whenever. I'm still waiting for my MB to get back from RMA. Also waiting to hear back from Chew* for a backup board. In the meanwhile I have more than enough time to experiment. Why do you ask?

Originally Posted by rickss69

I was thinking maybe straight Jack Daniel's for coolant...

Everclear may be a better choice

[kikicoco1334]

Originally Posted by rickss69

I was thinking maybe straight Jack Daniel's for coolant...

well... we are at where Jack Daniels made!

[ny_driver]

Originally Posted by OC Maximus

I still don't think that DDC pump will handle straigt anti-freeze for too long. Mine was pumping but got really hot and flow slowed way way down. And this is with no waterblocks in the loop.

Like I said if you can make it gravity fed and reduce the amount of necessary lift to return the coolant, your pump will not be working nearly as hard.

My $25 (non-submersed)submersible harbor freight fountain pump pumps 70% antifreeze @ -40C very slowly, but effectively.......and stays nice and chilly in it's 6-pack cooler. But it WILL NOT work if there is air in the lines, and I don't think it would work as well if I hadn't modded the block.

And you definitely don't want to end up like Pedro.

[OC Maximus]

Ok, using this resource as a base I found out a couple of interesting things that can help out my testing.

http://www.ashland.com/pdfs/technica...sh%20Point.pdf

(Color coded to make things a little easier on the eyes)
Liquid in the Cooler
Liquid in the Loop

90% Alcohol / 10% Water: Freezes @ -57C
70% Ethylene Glycol / 30% Water: Freezes @ -64C

The Alcohol / DICE in my cooler was pretty much a frozen paste and the anti-freeze in the loop ended up as a frozen slush. So the above specs do make some sense in my real world tests.

90% Alcohol / 10% Water: Freezes @ -57C
50% Methanol / 50% Water: Freezes @ -54C
60% Methanol / 40% Water: Freezes @ -71C

Methanol / Water may be worthy of a test run. Just need to make sure I have a fire extinguisher ready

I could also test a lower grade Alcohol which would raise the freezing point. That would help keep the cooling medium from freezing and still be sub-zero.

70% Alcohol / 30% Water: Freezes @ -29C
50% Ethylene Glycol / 50% Water: Freezes @ -34C

Might run the latter test today....or tomorrow.

OCM

[OC Maximus]

Success!!

Went out and got 4lbs of DICE, 1Gal Preston Anti-Freeze, 3 bottles of 70% Alcohol and 1 bottle of 90% Alcohol.

Made a 50% Anti-Freeze / 50% Di-Water Mix for the loop. Dropped 3 bottles of 70% Alcohol in the cooler. Added 2lbs of DICE slowly bring down temps. Kicked on the pump and watched the magic happen.

Within 20 min of slowly adding DICE to the Alcohol temps dropped from 25C to -20.5C. Ran at -20C for an hour then added a bottle of 90% Alcohol to the cooler along with some more DICE (which brought up the alcohol content in cooler from 70% to 75%). Within 5 min temps in the loop dropped from -20C to -25C. So far I've been holding -25 for 4 hours. I'll keep everything running till I run out of DICE.

No problems slushing in the loop and also no pumping problems.

Next I'll shot for -30C by adjusting my Alcohol/Water mix.













Thank you for reading,
OCM

[Kal-EL]

Grats Freezius Maximus, now just need a system to abuse and your transition to the dark side will be complete

[Neuromancer]

You sick bastard!!

I love it !!!!

you can get 99% at the grocery or wallyworld. (not always the later, might only get the 2 pint containers at wally world for cheap...)
Hit more stores if it aint at yours...