Project: make it a double

[MomijiTMO]

Ohh here it is on XS. . . . Great project!

[Lagaaja]

Whoa, I wonder if that fan could be bought as a spare part. Would be perfect sized for my rad too

[Alexontherocks]

I don't think they are sold as spare and probably don't have the muscle to push against tightly spaced fins...

I would need 4 technically to cover "most" of my rad area but in anycase I can't seem to find them anywhere....

[xguntherc]

Wow man... congrats that is what i call XTREME.. thats what I was expecting to see when I joined here. you just made my day. Well done Sir.

Nice temps. I wish wish wish mine were anywhere near that.

[septim]

2 car auxiliary fans per rad...

[Alexontherocks]

Wow man... congrats that is what i call XTREME.. thats what I was expecting to see when I joined here. you just made my day. Well done Sir.

Nice temps. I wish wish wish mine were anywhere near that.

thank you! You might want to know that I plan on adding a third radiator. Just as large but thinner. MAde entirely of copper it should help me achieve a delta of less than 1 degree

2 car auxiliary fans per rad...

I am afraid that defeats the whole purpose even though it would seriously be extreme! Right now the convection cooling I have is good enough but if I find some very cheap fans I will add them. I plan on having the most extreme of semi passive setups



is this extreme enough?

[mike8913]

submerge the rads in oil (mineral preferably) in a tank that is roughly the same dimensions as the rads. leave the top open and mount outward facing fans on top. Super Efficiency, you could do it with low speed fans and a smaller pump.

[Alexontherocks]

interesting idea but I am afraid that I would have to sacrifice the looks of my silver radiators under the desk. Maybe if I add a thir radiator, thin and very low restriction and encase it in a small tank with maybe 8-9l of mineral oil I might pull it off.

• Is there any need for oil circulation in the tank?
  
• Would I be able to achieve better temps or would the tradeoff of adding a thir radiator outweigh the benefits?
  
• I am not sure if my pump (single) can handle only the ek supreme and 3 radiators. It should have 18l/m of flow and 8m of head pressure.
  
• Where could I find cheap mineral oil (specifically to italian members of the forum)
  
• thanks again for the interesting ideas.

[mike8913]

You could always make the tank out of something clear to maintain the look, mineral oil is also clear.

1. no, convection will take care of it
2. i think 2 radiators is already too many, i wouldn't add a third.
3. You don't NEED those flow rates. They might be what you're targeting. It's all a matter of what you think you need in terms of flow.
4. Mineral Oil, unfortunately, is not cheap, but on the upside it will never go bad as long as you keep contaminates out.
5. anytime

[dopestuff]

why don't you take a bunch of cheap fans mount them on the backside (non visible side) of the rad and whit a controler only let them kick in when cpu hits like 50 degrees and then the fans spinning at 1000 rpm (still olmost inaudible)

[Alexontherocks]

why don't you take a bunch of cheap fans mount them on the backside (non visible side) of the rad and whit a controler only let them kick in when cpu hits like 50 degrees and then the fans spinning at 1000 rpm (still olmost inaudible)

My cpu never reaches 50°C not even in a passive setup

I get good, very ood results inducing convection with 4 fans mounted under the 2 rads sandwiched together.

I don't understand why adding a third radiator would be a bad thing. If I don't need that flow it means that I have goon enough flow already. Adding a third radiator would improve temperatures no?

P.s. I really can submerge the alu radiators because right now the water and the weight is substancial and the rads are suspended by 2 "L" type supports. I really don't think they will take more kg of oild and container.

I will look into it....

thanks

[Serpentarius]

do you think it's bit excessive? i mean it's LARGE and it's DISTRACTING ... not to mentioned you sitting in front of it .. one of the days your feet might got off and bang on the rad

maybe you should get some wood and disguise it ... btw it's a good worklog

[Alexontherocks]

do you think it's bit excessive? i mean it's LARGE and it's DISTRACTING ... not to mentioned you sitting in front of it .. one of the days your feet might got off and bang on the rad

maybe you should get some wood and disguise it ... btw it's a good worklog

excessive? yes definetely... distracting? sometimes.

The point is that I often touch the radiator with my hand to feel the temperature but I calculated that an individual sitting in front will not bang his or her feet unless they intend to. It is sometimes a distraction as I keep on thinking ways of upgrading the system.

Also the rads are invisible when someone works at the desk.

Wood would choke any air circulation really and push the whole assembly more towards the user thus reducing feet clearance

Infact this reminds me that I need to update the worklog with some additional details:

1) I have added the printer ink and now by coolant is a very nice blue. No sideffects. Temps unchanged.

2) I will rework the entire loop so that the cpu will have 1 iwaki and the gpu (an ek vga supreme) will have the second one. Both will PULL coolant from the blocks and PUSH the liquid into "Y" connectors and into the rads. From there the coolant will then be separated again and fed into each block (or loop if I add more blocks)

3) I managed to get hold of 15 cheap papst fans and will make a frame and shroud. At 6v I calculated 900cfm of air pulled so temps should be as good as they ca get. Also the fans will be pulled from the first rad and pushed on to the second (the fans will be sandwiched between the rads) so I will effectively have an intense flow of air which should be plenty yet still compatible with a vague idea of silence.

Hope this is interesting. I am very excited about this project since I know it can still be lot of fun to fine tune to my needs.

Not as fun as adding a garrett T15 turbocharger to my R6 yamaha but then again there are other forums for that..

[DistortioniZm]

THAT is sooo kicka$$!!! Maybe if you mount the whole system on the front of your car and hire a driver, you could bench while cruising on the highway!! Or wait, grab some tt turbochargers and incorporate those into the loop, muahahaha.

[Alexontherocks]

THAT is sooo kicka$$!!! Maybe if you mount the whole system on the front of your car and hire a driver, you could bench while cruising on the highway!! Or wait, grab some tt turbochargers and incorporate those into the loop, muahahaha.

Unfortunately any liquid is unsuitable to be compressed but you can bet Chuck Norris's flying high kick I would have if I could have...

[PCduster]

very cool project!

Could you explain in a little further detail how you rigged up the rads to use those 1/2" fittings?

I had an idea of turning some aluminum down on a lathe to match the i.d. of standard automotive radiator hose, then drill/tap the center for an EK or simliar fitting to mate up to it. Then just use the automotive hose to go from the radiator to the turned piece. I could do it at work, and the only thing it would cost me is the cost of the tap(don't have the correct tap size at work).


Also, is there any give on the pumps you used? Maybe a sligthly more expensive, although quieter, pump you could use for this type of application? I typically water cool for sound levels, and it always has been a lovely idea to me to use an automotive rad. Just never thought I could get a quiet pump to fit the bill.

I took a break from watercooling when I got these GTX260s, but I am gathering parts now to move back into liquid cooling. It would be very cool if I could go a route similar to yourself for my next setup.

[Duh]

Unfortunately any liquid is unsuitable to be compressed but you can bet Chuck Norris's flying high kick I would have if I could have...

hey, have you read the pms I sent you a long time ago??

sorry for the OT

[Alexontherocks]

yes....and have replied to every one.

Have I missed any? If so I am sorry.---


As for the rads...

I simply went to a plumbing shop and bought a set of fittings which helped me shrink the inlet and outlet from 1" to 1/2". On the male threaded adapter I then screwed on the 1/2" barbs.

As I recall the adapter went 1" to 3/4" and the barb had a 3/4" female thread to 1/2" hose fitting.

All the connections were sealed with teflon and bisonite.

Bisonite is a epoxy glue I found to be most resilient even in harsh conditions (especially humidity). Left everything to set for 24h and then connected the whole thing to the block and pumps. The adapter is an "elbow" one basically turning 90° and letting me run the tubing without bends. Go to your local hardware shop (plumbing hardware) and explain the situation. Either metal or PVC, you are bound to find the correct stuff.

As for the pumps. You are right (I think) that there are more suitable pumps for this kind of application in terms of noise to performance. However I suggest at least 6m of head pressure if using an injector block.

In my setup the water travel through 2 car rads, against gravity and through 250 tubes through both rads (180 of which are just 2mm wide) You can see that pressure drop might be an issue. I found that the benefits of running 16m of head rather than just 8m is trivial to nonexistant. Also the heat dump outweighs the benefits in my setup (now entirely passive).

You might be able to get good results with two ddc or some other "weaker" pump with a second unit in series or you might just try and see where that path takes you. I am honestly unsure about the correct approach since I went overkill right away.

The iwaki is quite silent actually. You can hear it but it is a low hum rather than high pitched whine so it suits my needs.

My results are impressive. Right now with an ambient of 21°C I am folding 3.6gh @ 1.5v on my q6600 and my temps across all cores are between 36°C and 40°C. this in an entirely passive setup. If I were to turn the 4 (four*) fans I have to induce convection movement between the rads I get a max delta of 10°C at most.

I estimated that I may have 500w of headway in a passive setup (stretching it) and in the excess of 1kw with a full array of fans. Probably 1 rad was sufficient but 2 reasons pushed towards a double system:

1) this is xtremesystems so I felt compelled

and..

2) it is the most efficient design given my situation. I had space for two under my desk, the pump is able to cope with both easily and any air moving thorugh the rads is enough to let the 2nd rad express its potential.

I hope I have answered your questions. If you check my pics You will be able to spot the fittings and the wy I mounted them. Also for any other info PM me, I will gladly help any way I can.

[Duh]

alex your setup is a real inspiration. I really congratulate you on your setup.


EDIT: I ve just seen you ve got msn: I ve added you

[Alexontherocks]

alex your setup is a real inspiration. I really congratulate you on your setup.


EDIT: I ve just seen you ve got msn: I ve added you

Thanks! I hope all this can help those who intend to use car radiators. Also some ideas are pretty good in any setup I think. Like the 2 loops joining into 1 (1 pump for each) and especially the convection idea. That seems to me a great way to unite silence and a reasonable performance.

Even the most faint of air movement drastically increases the performnce of passive radiators.

I would imagine the relation is marginally decrescent (I hope this is correct in english).

[sokzzN1]

wow best temps ever :o
1.9v full load = 60cº hahaha :P kickass

[kinghong1970]

dude, i got a industrial floor stand fan (36") in my warehouse that i'm not using... wanna use it? lol