Cheapest Way to cool water

[RedPhoenix]

What would be the cheapest/easiest way to chill water below ambient? Not just a few Celcius i mean ice cold? Cheapest way to do this?

Thanks

[Cathar]

Bar fridge from the trading section of your local newspaper. Pull down the fridge element so that they hang in a bucket of water/anti-freeze. Turn fridge on and close the door.

[fhorst]

In winter time? placing a big rad outside...

Otherwise, a bong wil do some.

After that, no cheap solutions.
You might get a dumped freezer for free, but don't look at your electricity bill!

[RedPhoenix]

Well I am checkin on ebay... Would any of these work

http://cgi.ebay.com/ws/eBayISAPI.dll...&category=3202

http://cgi.ebay.com/ws/eBayISAPI.dll...category=20715

http://cgi.ebay.com/ws/eBayISAPI.dll...category=16035
( this would be better than the above 2)?

http://cgi.ebay.com/ws/eBayISAPI.dll...category=20713
http://cgi.ebay.com/ws/eBayISAPI.dll...category=20715


Hm?
http://cgi.ebay.com/ws/eBayISAPI.dll...category=20713

[zoson]

You're going to need something much, much more beefy than a minifridge to keep your water ice cold at a huge heatload created by 2400mhz.
The fridges are designed just to remove the heat, and keep a cold environment cold. They are NOT designed to keep a liquid cold that constantly is having heat pumped into it. You'll either burn the compressor out, or your coolant just won't get very cold.
-Zoson

[RedPhoenix]

Hm, so what do you suggest I do

[killernoodle]

One way is hooking a peltier between two waterblocks and using that as a chiller with two cooling setups.

[Cathar]

Originally posted by zoson
You're going to need something much, much more beefy than a minifridge to keep your water ice cold at a huge heatload created by 2400mhz.
The fridges are designed just to remove the heat, and keep a cold environment cold. They are NOT designed to keep a liquid cold that constantly is having heat pumped into it. You'll either burn the compressor out, or your coolant just won't get very cold.
-Zoson

I base my recommendation on a few guys who have done just what I said, and kept hot overclocked CPU's very cool with the water below freezing for two years straight now.

It was not a casual throw-away recommendation. It was based on real experiences, and not just theory.

[Cathar]

Originally posted by killernoodle
One way is hooking a peltier between two waterblocks and using that as a chiller with two cooling setups.

http://forums.overclockers.com.au/sh...hreadid=141703

[killernoodle]

Exactly

I saw another with dually Swifty 5000 waterblocks, that would be a really effecient one. Now, if you put the hot side radiator outside in the winter, you would have one very cold loop of water going to the cpu.

[RedPhoenix]

So get a pelt setup on a seperate loop and just submerge the WHOLE block or just the frost part in the water

OR

Have 2 cpu blocks hooked together and a pelt inbetween. hot side on a sperate loop and the cold side in with the rest of the wc?

Which one woul dbe more effective?

[fhorst]

You'll need a 400w pelt (or a combination of a few pelts) to get enough power to cool 10 degrees celcius.
Pels are not effective when it comes to cooling water. Heating water, and cooling a CPU is 200% more effective!

You'll get better results if you place a 223w pelt on your CPU.

Chillers based on pelts seem like a good idea, but they don't work that good.

The setup from Cathar is the best way to go if you want to keep it cheap. I don't want to pay your electriciy bill when you use a 400W pelt 24/7

Using a fridge will take about 180W, and will get the result you want.

[redleader]

I would never chill with a plet. They're too energy ineffcient. Compressors are typically many times as effective per watt of input power.

As for those fridges . . . lol maybe get 15 and run them all at once and you'll be good.

I don't think you grasp just how much power you really need. You have ~100w of CPU just to break even and match a radiator. Then you need more and more for every degree C below ambient you have because thermal leakage is proportional to delta T. Finally since you'll probably run your computer for more then a few minutes at a time, you'll need something that can sustain that kind of duty cycle. No consumer fridge is going to do that at the power levels you need.

Look at old AC units, dehumidifiers and industrial/commercial fridges.

[Cathar]

Originally posted by redleader
As for those fridges . . . lol maybe get 15 and run them all at once and you'll be good.

.....

No consumer fridge is going to do that at the power levels you need.

http://users.bigpond.net.au/mred32/ - Been running that way for two years....coolant gets as low as -15C even when overclocking, all from a very small $100 bar fridge.

Here's a thread detailing experiences with using the compressor of a bar fridge as a water chiller:

http://forums.overclockers.com.au/sh...threadid=76363

Some further experiences in peltier based water chilling using 3 x 80W pelts:

http://www.abxzone.com/forums/showth...5&pagenumber=2