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-   -   How much water? (http://www.aoaforums.com/forum/cooling-and-temperature-monitoring/36798-how-much-water.html)

QSDT 7th June, 2006 05:33 AM

How much water?
 
As the title asks how much water does your water cooling system hold? I'll be wet testing my new res & pump tonight and I'll get a measurement of what it holds. But I've being thinking how much does everybody else have.

Gizmo 7th June, 2006 06:26 AM

Ideally, your water cooling system should only need enough water to fill the hoses and the radiator (and a small reservoir). Mine holds (I think) about 3/4 of a liter, but I've got a rather large radiator.

I've heard tell of people who have massive reservoirs that hold gallons of water. IMHO, if you need a large reservoir to maintain reasonable temps, you haven't got a large enough radiator for the heat load you are pushing at full tilt.

cadaveca 7th June, 2006 06:35 AM

2.25 litres.

Aedan 7th June, 2006 11:33 AM

Mine has a capacity of a bit under half a litre (around the 350mL mark). No reservoir, but there is an expansion vessel.

gedon 7th June, 2006 12:56 PM

~1L + 0.3L reservoir

Samuknow 7th June, 2006 01:07 PM

Prob ~1.5L. I have a res that my pump fits in + my rad...

QSDT 7th June, 2006 01:40 PM

Well I got it going holds 730ml the whole system just purging out the air right now and leak testing aswell. How long do you guys leak test for?

Rondog 7th June, 2006 01:56 PM

Quote:

Originally Posted by QSDT
Well I got it going holds 730ml the whole system just purging out the air right now and leak testing aswell. How long do you guys leak test for?

24 hours is the general rule of thumb.

QSDT 7th June, 2006 02:04 PM

The anti corrosion stuff I'm using tastes like maple syrup got a mouth full of it about an hour ago can still taste it now. Hope it wont kill me, if I don't post tomorrow be worried. Oh yes the swiftech MCP350 pump is very quite have to touch it to tell if it's going. But it has a slight delay before powering up maybe 1 sec.

QSDT 7th June, 2006 10:56 PM

So I live. My wife played a mean trick on me this morning she told me that I had a small puddle under my new res without smiling. This was done while I was on the toilet so that I couldn't check and had to suffer for a few Min's thinking what did I do wrong! Talk about sleeping with the enemy.;)

Daniel ~ 8th June, 2006 01:51 AM

Quote:

Originally Posted by QSDT
The anti corrosion stuff I'm using tastes like maple syrup got a mouth full of it about an hour ago can still taste it now. Hope it wont kill me, if I don't post tomorrow be worried. Oh yes the swiftech MCP350 pump is very quite have to touch it to tell if it's going. But it has a slight delay before powering up maybe 1 sec.

DUDE! If your using automotive anti-freeze or it's kin...THAT'S A DEADLY POISON! READ the label carefully and follow the appropriate measures. I do know ingesting small amounts, a half cup or less can KILL YOU. I have no idea about casual exposure.

Daniel ~ 8th June, 2006 01:54 AM

Quote:

Originally Posted by QSDT
So I live. My wife played a mean trick on me this morning she told me that I had a small puddle under my new res without smiling. This was done while I was on the toilet so that I couldn't check and had to suffer for a few Min's thinking what did I do wrong! Talk about sleeping with the enemy.;)

Sorry, panicked at the preceding post. As to your wife,..... thank her for me.":O}

robbie 8th June, 2006 02:16 AM

Quote:

Originally Posted by QSDT
So I live. My wife played a mean trick on me this morning she told me that I had a small puddle under my new res without smiling. This was done while I was on the toilet so that I couldn't check and had to suffer for a few Min's thinking what did I do wrong! Talk about sleeping with the enemy.;)

yeah.... that will get things MOVING!!! :)

QSDT 8th June, 2006 02:27 AM

Thanks Daniel just read the bottle, yes it is poisonous if swallowed. Luck I guess.

Daniel ~ 8th June, 2006 02:32 AM

I've had trace amounts on my lips on occasion, but the inside of the mouth absorbs like a diaper!! You gave me a bit of a start! Glad this passed you by!! Small kids, dogs and cats are always getting killed because the idiots make it sweet tasting. Must be something unavoidable or someone would have stopped it long ago.

Aedan 8th June, 2006 10:52 AM

Quote:

Originally Posted by Daniel ~
Must be something unavoidable or someone would have stopped it long ago.

I suspect the only way to stop that is to change the way the molecule is put together. Mind you, that'd also have the side effect of stopping it being effective as antifreeze...

MrSeanKon 8th June, 2006 11:03 AM

QSDT LOL my custom watercooled system has a 15lt LOL tanker! (not tank)....:ying:
Connection is Pump --> Radiator --> Waterblock --> Tanker! --> Pump again.
The most important thing for this connection is tank's temperature which is some degrees higher than CPU's.
I have some stuff for this in Guidemania and I will update the section in the future.

keithwalton 8th June, 2006 09:37 PM

most modern anti freeze's are made up from ethlene glycol, which is a form of hydrocarbon.

Quote:

In its pure form, it is an odorless, colorless, syrupy liquid with a sweet taste. Ethylene glycol is toxic, and its accidental ingestion should be considered a medical emergency
It has in the past been used to make wine taste better (east german wine jokes, when in fact it was Austrian) its also in 'moonshine'
in low quantities its not all that toxic as people make out however due to its sweet taste as said people dont just drink a little bit they drink alot. Effects are similar to that of alcohol poisoning (funny that it being an alcohol en all that). Oh its also quite flamable to boot.
30ml of the stuff neat (anti freeze is by no means neat) is enough to take out an adult human. Funny bit is the cure is ethanol which when neat is poisonous itself! The two fight each other out with ethanol being the lesser of the two evils. Usually a strong whisky, vodka or gin does the trick.

The higher the amount of water in your system the larger its thermal capacity (water = 4.2 kJ/kgK, ~ 1kg = 1l). The more water you have the slower its temperature will rise -> its less responsive to heat input change. Resevoirs act as an additional radiator as well, however they are only cooled by natural convection and have a much lower surface area / volume ratio.

Lazgoat 8th June, 2006 10:07 PM

...but once it all gets up to temperature its alot harder to cool it all down again!

I have about 500ml in my system. Simple CPU loop with Swiftech 6002 WB, Eheim 1048 pump, Danger den Res and Thermochill 92.2 rad, all plumbed with 7/16 tubing so its nice and slimline! :)

QSDT 8th June, 2006 10:58 PM

15lt I'm guessing it's not a Lan're, but your temps wouldn't move much hey. Does a better pump help with lower temps? Haven't yet got mine on yet to check still leak testing.

Samuknow 8th June, 2006 11:34 PM

Quote:

Originally Posted by QSDT
15lt I'm guessing it's not a Lan're, but your temps wouldn't move much hey. Does a better pump help with lower temps? Haven't yet got mine on yet to check still leak testing.


Better pump....it depends alot on your loop. Some blocks don't mind a smaller (lower output) pump and actually do better with one. On the other hand, blocks like the WW and similar need a more powerful pump the perform at all.

keithwalton 9th June, 2006 12:10 AM

a higher flow rate pump will increase the avaliabilty of cold coolent on the heat exchanger (water block) however it'll begin to saturate the harder you push it as other effects such as flow choking will begin to set in.
Flow rate also isnt everything, it is inversly proportional to head pressure in a typical pump (you either get lots of flow rate or lots of head pressure or somthing in between you never get both).
cpu blocks will create quite a pressure loss in the system which will be proportional to flow rate.

In an ideal world you'll use an infinite resevoir in which case you wont need a radiator! but this isnt really practical now is it.

Just as a random aside, do any of you water cooling bunch use a swirl pot ?

Samuknow 9th June, 2006 02:14 AM

So let's hook it up to the cold water at the faucet and let the rest go down the drain...

QSDT 9th June, 2006 05:31 AM

Here in Aust, the driest continent we just can't do that or even think of doing that. One town Toowoomba is going recycle sewage water for drinking!

Aedan 9th June, 2006 09:49 AM

I considered using a toilet cistern as a reservoir of cold water. The only problem is that the cistern doesn't carry that much water at the moment, due to the drought order in place...

MONKEYMAN 9th June, 2006 10:05 AM

yeah I heard about the hosepipe bans in other counties, that sucks....I'm just gonna fill up the fill up the kids pool, flush my toilet and water the garden all at once:thumbsup:

keithwalton 9th June, 2006 03:29 PM

there is a hosepipe ban in the south and south east! of the uk

Samuknow 9th June, 2006 07:37 PM

Quote:

Originally Posted by MONKEYMAN
yeah I heard about the hosepipe bans in other counties, that sucks....I'm just gonna fill up the fill up the kids pool, flush my toilet and water the garden all at once:thumbsup:


I hear ya...just leave the hose on and let run all night....lol

QSDT 12th June, 2006 08:06 AM

So the new Swiftech MCP350 pump and my res dropped my temps by 2c not that much but the plus is that I don't have 240 volts inside my case anymore, it did get me once on the finger but the saftey switch did work.

Samuknow 12th June, 2006 05:29 PM

Quote:

Originally Posted by QSDT
So the new Swiftech MCP350 pump and my res dropped my temps by 2c not that much but the plus is that I don't have 240 volts inside my case anymore, it did get me once on the finger but the saftey switch did work.


OUCH...

dsio 12th June, 2006 06:15 PM

Talk of pools is interesting. Running a pipe from the filtered side of the pool filter pump, through a high flow block, and back into the pool could be interesting.

If you have a Smithfield / Prescott, you could probably keep an average inground pool above room temperature during the colder months.

Samuknow 12th June, 2006 08:04 PM

That is stinking briliant...

Pools are cool even in the warmer months...

Aedan 13th June, 2006 10:49 AM

Quote:

Originally Posted by dsio
Running a pipe from the filtered side of the pool filter pump, through a high flow block, and back into the pool could be interesting.

That could be very interesting. I'm just wondering what would happen if the system sprung a leak? ;) Dead computer is one thing, but flooded house is another thing entirely!

Samuknow 13th June, 2006 11:56 AM

Quote:

Originally Posted by Áedán
That could be very interesting. I'm just wondering what would happen if the system sprung a leak? ;) Dead computer is one thing, but flooded house is another thing entirely!


Well I guess it's not like springing a leak it a 2 L system. More like a 50000 Gal System...lol

dsio 13th June, 2006 01:46 PM

Quote:

Originally Posted by Áedán
That could be very interesting. I'm just wondering what would happen if the system sprung a leak? ;) Dead computer is one thing, but flooded house is another thing entirely!

A kill switch wouldn't be too hard. Base it on block pressure, or on waste flow rate. Trick is to make sure its solid before hand, and have a pressure release system in effect. This isn't a plug and play thing, its a think it out thing.

And further, you would divert a portion of the pool water, not all of it, just in case. Where's Kaitain when you need him?

Samuknow 13th June, 2006 02:08 PM

My question is, who here has a pool and is willing to test this?

What will chlorine do to your block(s)?

Is this too insane for reality?

Daniel ~ 13th June, 2006 06:54 PM

My observations would seem to indicate that NOTHING is to insane for us to bring into existence...why sanity is barely even a qualifier! Than said, I think we NEED to do this! ... I just don't know why...spooky isn't it. If we get desperate we can say we were planing to cool not one computer but hundreds, even thousands! All off a single swimming pool and pump!

Samuknow 13th June, 2006 07:04 PM

Not only cool computers but heat a pool....lol

A multi purpose endevor...

Daniel ~ 13th June, 2006 07:12 PM

Make a water fall of the return flow all soft wet and warm against our manly skins!! ":O}

cadaveca 13th June, 2006 07:15 PM

Tell that to Apple:

Quote:

I decided to do some more research and found a guy that had a unit 14 months old that leaked. He did not have AppleCare, but Apple agreed to fix it because it was less than 90-days out of warranty. A few months later, he had another unit leak. This time, the globs of glowing green goo got into his power supply and shorted it out. One of his co-workers described a bright flash and a loud buzzing crackle. Light-colored smoke poured out of the machine, and sizzling coolant dripped onto the aluminum handle. The “cheese grater” back grill had scorch marks. With both incidents, he said Apple was extremely cooperative and provided swift resolution by paying for the parts and labor required to restore the G5s back to working condition. He also noted that he did not lose any data on either machine.
http://www.macsimumnews.com/index.ph...c_g5s_leaking/


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