Refrigerator unit for liquid cooling systems!

[polar bear]

There is no way in hell a D5 will pull 1200l/h with blocks and incline. I think you missed me telling you this about 4 times already.

No, I just didnt understand why initially. I thought my D5 would give 1200 LPH under ANY circumstances, well of course now I understand it is under IDEAL circumstances only and it would mean at almost no resistance i.e. head. I have just started looking into Martin's and others flow/head calculations, kinda a lot of info to swallow in just a few days time but I'm getting there. And with a separate circuit for the chiller only you wouldnt have to subtract flow rate for blocks, rads etc. The resistance to flow would be only that of the chiller itself.

The reason why i say you need a reservoir is because that way you have a headroom.

According to thermo, it takes about 350W traveling at 1.5gpm for water temp to change 1C. Thats a lot of heat required. By having this chiller attached to a larger reservoir, you have large volumn acting as headroom. This will always allow your chiller to be used far less, it would pulse instead of be on all the time.

Yes now I am starting to get this too... thanks for explaining though. Just can't understand why this unit requires such a massive flow rate...

As i said i have one of those chillers, and i already considered the idea of using it, but there isnt a pump out there which doesnt dump a ton of heat back into the water that you could use to pull this off.

Then i discovered the most covetted pump of our hobby, the RD-30. 30feet head on a pump a little bigger then the D5. But its also priced 4x-4.5x if you include the required psu.

Ehh but the RD-30 has the same flow rate as the D5 listed, which I presume is under ideal conditions... 1200 LPH. It differs of course in the head pressure of 10m. It certainly is expensive though.

In his thread camouflage is using an Eheim 1250 (1200LPH, not sure about head).

So yeah, if your going to spend all that money, why not just phase? A builder could easily build you something much nicer and which will last longer, better tuned for computers,

The cost/peformance ratio on this unit is so not worth it. 250 dollar pump system. 600 dollar chiller, then you'd need blocks, and everything.

Last time i checked, almost any custom builder could whip something for you cheaper on a SS phase unit, and drop the gpu's on water. Still end up being cheaper.

as I said earlier I havent decided on anything just yet. But seeing camouflage's thread got me thinking as to whether it may work. Phase... dont even get me started. Perhaps after a few months of reading/researching yes. Well, I'm going to stick with my new rads (which I haven't even received yet ) then lets see what the next upgrade would be.

[Tortel]

Dude... you need to rethink what you just said.

The guy is correct. There is no way a something that consumes 375W can disapate 790W of heat. If that was the case, then you would have created energy. Using 375W to burn off 790W of heat.

Were also talking about compressors here. Compressors superchill a liquid to below freezing. This liquid is then transfered to a heat exchanger where the liquid is cooled. If you look at REAL chillers, you'll see that this is a TOY.

This reminds me of a Salt water tank chiller. These units ARE VERY BAD in the computer world. Why? because when you have over 1.5gl/m flow, it takes roughly 350W of heat to raise or lower the water temp by 1C.

Now how these units work in salt water tanks is this way. Large masss of water, with evap conditions going on, and also adding a chiller, you can bring your tank serveral C's below ambient and actually keep it there for a while.

On a PC system however thats completely changed. There is no evap, and in a sealed loop without a radiator, the water temp has no direction but to climb.

Now if that chiller cant keep up with your heat load, and im sorry, but if you ever seen a real unit that can do 790W, and THERE NOT SMALL, You'll laugh and say nice one.

In short, you'd have to be almost an idiot to pick this unit over a custom builders, and even more stupider to hook it up to a quadcore with tri sli.

Buy a huge powerful one, and run some pipes though the walls. Central water cooling!

[funkflix]

I use a Laing Ultra and a 1250 in my loop, and believe me, the Laing alone have a better flow in that restrictive system then the Eheim!

Think the best way to go is a dual setup of Laings. I use the chiller in a other room and have to go threw about 10 meters of tube. No problem for my one Laing.

Here is my system prepared for the chiller:



Under the PSU i can add the chillerloop outside of the system, close the tap on the radiator and i will not loose any coolingpower on the radiator. If i wish to use my system portable i can close the two taps under the PSU and open the one on the radiator, the system runs like it ever did with just the triple radiator.

Here is my chiller-area in the other room:

[polar bear]

Thanx for your input, just as I thought this thread had died

Wow, that's a neat setup you've got there, very tidy n organized, good work on the cable management. Tubing routing looks good too.

It's nice to see that people here have been able to implement this chiller -I first saw camouflage's setup with one of these, and now your. Just shows it's actually doable. You have a build log of your waterchilled rig? Also, any issues with condensation?

[funkflix]

Thanks!

No issues with condensation so far, but i run just 20°C water for 24/7 usage. With that temperature i will have no problems with it, not even with 30°C ambient in summer*. Lowest watertemperature i tested so far was 8°C with an ambient of about 15°C. I have some isulation-stuff lying around here, maybe i will add it soon.

Sorry, no worklog for my system. It is a neverending story.. Every few weeks i change something on it.


* http://www.cb-gruber.at/index.php?op...d=29&Itemid=32

[Kilyin]

Here is my system prepared for the chiller:

Wow... that is the cleanest tube routing I've ever seen in my life. It's almost invisible... you really have to do a doubletake to see that it's there.

[polar bear]

@ funkflix,

Your rig has left me speechless... still looking at it in awe =>

How far have you been able to take your E8400 on that rig? Thinking of getting one for my system. Although I probably won't go chilled water yet, I've got a fairly decent WC setup.

EDIT: which case is that?
Also, where is that Laing Ultra hiding? Can't see it in the photo...

[funkflix]

Thanks a lot guys!

EDIT: which case is that?
Also, where is that Laing Ultra hiding? Can't see it in the photo...

It is a Chieftec Mesh Bigtower. The Laing is above the HDDs.

My E8400 is running at 4200MHz 1,39V 24/7, but i still achieved that with my stock watercooling, but way better temperatures now.

Here is a quick 32M i did 30 minutes ago, with about 12°C water.


Here some more shots of my system:

[teko]

If I was living alone without any female to use up the monthly pay check, that one would be cool, got an iwaki MD20 somewhere, that would be perfect for it I think But i doubt I would even then, use that much money on one item, I'm kinda cheap :p

[ArtosDracon]

Wow, funkflix that is a gorgeous build, and one heck of a restrictive loop.

The eheim just doesn't have the head needed for this application. The high flow rate requirements are probably because it uses a a large plate or a large multi-coil heat exchanger and the system probably measures water temperatures near the outlet so it requires high flowrates to help keep clean pure water from freezing in the HX. You have to remember this is designed for aquariums, you can't put antifreeze in an aquarium so they have to keep the fluid moving to keep it from freezing.

A large body of water for the system to draw from just helps smooth out any ripples from swift load changes. It also will take longer to pull the fluid down from ambient with a fixed thermal capacity. Basically, it will take 5 times longer to pull 5 gallons down to temperature than 1 gallon but, that means it will take 5 times longer to heat back up as well. it's not that simple or that linear but, thats the basic idea.

IMHO this system is a great pre-built system with a nice integrated controller and takes a lot of the guesswork and fiddling out of a chiller but, a lot of the fun as well. Tearing apart an AC and hacking together a chiller is actually really fun, especially once you start doing your first pull downs and seeing -28C unloaded. You have to be careful though or it will give you false illusions of grandeur.

This certainly won't be an extreme chiller but, it's definately an extreme water system and I think a very nice replacement to a radiator and some fans. Were this system to be used for a 24/7 loop with really consistant loads I would say run it as is with big pump like an RD30 or parallel D5s on a loose loop or parallel DDCs(atleast until I get my D5 tops rolled out) for a restrictive loop. with 10-20% antifreeze depending on how cold you want to run it and monitor your local temperature and humidity levels carefully. At 90% humidity condensation can form a 3C below ambient.