water cooling setup, anything missing?

Fans would be this sort of thing, though availability is always difficult. There are some decidedly impressive 120mm fans out there too, e.g. this counter rotating one.

The former is rated for 45Pa at 2 m^3/min, the latter for 480Pa at 2 m^3/min. So, fan pressure is negotiable. The 140mm by 38mm one looks about right to me.

I don't think counter rotating is a sensible plan for a computer, but would suggest that an order of magnitude increase in pressure over more reasonable fans throws doubt on the no-stacking premise.

I have a couple of 120mm radiators with a 38mm fan between them at the moment - but no means of showing useful results. It gets louder if I take one off though. The 420mm stacked is in order to maximise the cooling possible in a 4U unit - if you're around in a years time I hope to have something unusual to show.
 
Drilling a hole in the wall is tempting, but maybe a bit heavy-handed.
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That is exactly what iam going to do, drill 4 holes in the wall for the tubeing, iam sure no one is small enough to get in that way! my hobby room is just for me and my amateur radio gear, model aircraft, and computers so 4 holes outside to 2 rads for 2 loops isn't a problem, they will both be in the shade 24/7 and covered incase of rain, snow ect.

But iam hopeing for a very quiet PC running very cool with good scope for overclocking. having used phase change before for extreme stuff iam not that fussed it wont be maximum overclock. just as long as its quiet, no fridge motors running, no screaming fans. so I can enjoy some games, music and my radio without any drone in the back ground.

anyway all ordered now so will put some pics up when its all together.
 
JonJ678 said:
Fans would be this sort of thing, though availability is always difficult. There are some decidedly impressive 120mm fans out there too, e.g. this counter rotating one.

The former is rated for 45Pa at 2 m^3/min, the latter for 480Pa at 2 m^3/min. So, fan pressure is negotiable. The 140mm by 38mm one looks about right to me.

I don't think counter rotating is a sensible plan for a computer, but would suggest that an order of magnitude increase in pressure over more reasonable fans throws doubt on the no-stacking premise.

I have a couple of 120mm radiators with a 38mm fan between them at the moment - but no means of showing useful results. It gets louder if I take one off though. The 420mm stacked is in order to maximise the cooling possible in a 4U unit - if you're around in a years time I hope to have something unusual to show.
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I've seen sanyo's easily available in this country, however they usually run to about £60-80 each... e.g. more than another rad

I can't help but think that you would be much better off using cheap fans and just mounting the rads outside the case somehow, or cutting holes for them in the roof of the unit... or something

otherwise you are talking about a £280+ hammer to crack a £10 nut
 
JonJ678 said:
Well, you're going to get what you're hoping for. Should be fun putting it together too. Enjoy :)
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I've been thinking about your issue... it sounds like you have restricted space laterally, but plenty of space vertically... could you arrange the rads and fans with a gap between them, and add vents between them as well,

that way you will be pushing some of the hot air away from the first rad and allowing at least some cooler air in to the second rad?

still not ideal, but if you can drop the temp of the air for the 2nd rad by even a few degrees, it could aid your cooling efforts massively

maybe even with a grilled seperator at an angle to help direct warm air out and cold air in
 
Well the water cooling is all done, just bleeding air from system at the moment.

2 X XSPC RX360 rads 6 X corsair 120mm fans, laing D5 pump and this is what it looked like.



inside res



Twin rads and fans outside!




silence is golden as they say! the twin rads work perfectly and it looks cool with emerald green dye, the only thing I didn't bother with was the twin connect between the cards, GTX 680's look real skinny without an air cooler!

so far very pleased I have both pump and fans working from a 12v 40amp amateur radio PSU with variable voltage to fans. I can ebven give them 15v if I want a boost at any time.
 
Impressive work for an outside build! It looks like you're in a shed there, does it not get a bit chilly in the winter?
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Ha ha it may look like a shed but its my radio shack, its all sound proof inside and very well insulated so when iam on the radio late at night no one can hear me. its like a room where no one goes and is locked when iam not home, then no one can tidy up and throw things away!

Its on the side of the house, perfect!
 
Thanks guys, its so nice to have silence! Its been on for 6 hours now and still iam getting air out, but its flowing nicely now and the fans are just about going 7v infact iam going to turn them off completely now just to see how well it can cool passively.

at the moment GFX temps via evga precision 7c :D

cpu temp idle 13c :D


will report back in an hour with passive temps, no fans at all running on the rads
 
Ok update on the passive cooling well GPU's have now settled at 18c stable
and CPU now settled at 22c stable temp :D

So no fans needed when its a cold night!
 
well an update, I ran it last night with no fans running on the rads and it showed great passive cooling temps all round CPU 22c GPU's 18c so no complaints there.

Iam still getting air out of the system, the res has dropped 2 inches, fine little bubbles keep passing through but gradually getting better.

Now it has warmed up outside I have the fans on and iam giving them full speed and heres a pic of the temps.




well pleased so far and worth the effort.
 
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vapor matt said:
theres no condensation at all, running passive now and cpu 23c ;)
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not now, but when outside temps are low and you put the heating on it would be wise to keep an eye out for it

any time you use sub-ambient cooling you have a chance for condensation to form, that is why water chillers often now come with settings to measure temperature and humidity to ensure that they stay above the dew point in the room

for example, if your room is 20C and the relative humidity is 50%, your dew point is going to be 9C, so you'll want to keep all your fittings and tubing above this temp (in other words, your fluid too)

it shouldn't be a massive problem, but just something to be aware of and keep an eye out for in the colder months
 
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not now, but when outside temps are low and you put the heating on it would be wise to keep an eye out for it

any time you use sub-ambient cooling you have a chance for condensation to form, that is why water chillers often now come with settings to measure temperature and humidity to ensure that they stay above the dew point in the room

for example, if your room is 20C and the relative humidity is 50%, your dew point is going to be 9C, so you'll want to keep all your fittings and tubing above this temp (in other words, your fluid too)

it shouldn't be a massive problem, but just something to be aware of and keep an eye out for in the colder months
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Sound advice, thanks for that. when its cold I don't need the fans on the rads running to keep it cool ive found, this morning there was a frost outside, white grass! so when I booted the computer I just left the rad cooling fans off and she was upto temp in 15 mins, also I have 4 x 120mm silent case fans moving air through the case which might well help condense. I guess a pre heater may be called for in winter.

I also have a weather station in my hobby room, which gives me the dew point so I will keep an eye on it, mind you in may nearly now so shouldn't be a problem I hope!

Thanks again
 
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