double passive radiator

herosformula · Post by **herosformula** » Thu Oct 09, 2003 9:33 pm

I set up a DIY passive radiator watercooling rig for my computer. Pictures are here - http://herosformula.org/watercool/watercool.htm Only fan in system is 5V Panaflow in PSU. Temps for a 2.53GHz Intel is 38c, case 36c running folding@home for the last 4 hours. I will comment/answer questions tomorrow, must go to sleep now.

Haggis · Post by **Haggis** » Thu Oct 09, 2003 10:40 pm

Nice work herosformula.

Got any specs on the radiator, links etc?
Interesting looking block also.
It's late and I'm also tired but I'm confused about the four pockets machined out of the copper block, there doesn't seem to be any flow between the pockets.
I'll check out the thread again after work tommorow, I should be more awake then

herosformula · Post by **herosformula** » Fri Oct 10, 2003 7:18 am

The radiators are two Derale 13105 transmission oil coolers, available from auto parts stores. They are mounted parallel in circuit using a water plenum mounted on the right case side, as shown in the 5th picture. Warm water goes in the top plenum and cooled water exits at the bottom plenum.

The incoming water is aimed at the center of the four copper chambers, splitting it into four parts. In the 1st picture, the third plastic part, you can see somewhat the clear half which has a butterfly-looking shape cut into it. This system pressurizes in the incoming water streams, then decompresses them, hopefully enhancing the cooling effect. The four streams are then collected by the top clear section (the closest part to the camera in the 1st picture) and sent out of the block.

The reason for running with the four chamber system is that the bottom that contacts the chip is fairly thin (0.050) If you were to machine this as a complete section, it would be difficult to keep the bottom flat. By adding these ribs, the wall section maintains its rigidity - with the added bonus of increased water contact surface area.

All parts were machined by Jim at Livewire Prototyping http://www.livewireprototyping.com This project would not have been completed without his valuable assistance.

herosformula · Post by **herosformula** » Fri Oct 10, 2003 7:14 pm

update 1 day later

now at 35c, must be the AS3 seating in (or its colder today, I haven't checked the weather)
temperatures are based on a closed room, no air movement

my 80mm Panaflow fan on the PSU seems loud now

Haggis · Post by **Haggis** » Fri Oct 10, 2003 10:32 pm

Ahhhhh. Now I see what you are doing. Well thought out design. Well done

Yeah it's getting way cooler here in the North West. Summer was great though

. It's my vid card fan that's bothering me

herosformula · Post by **herosformula** » Sat Oct 11, 2003 1:52 am

The small fan on my video card produced a high-pitched whine that I find to be very annoying, but my watercooling system takes care of the video card as well.

I was able to replace 3 fans (CPU, GPU, and case fan) with one waterpump for a dramatic reduction in noise, while dropping CPU temperatures about 8c.

pingu666 · Post by **pingu666** » Sat Oct 11, 2003 7:19 am

i thought u had piped it up wrong till i read the txt

im gonna work on my stuff, after forumage:D

herosformula · Post by **herosformula** » Sat Oct 11, 2003 10:08 am

the circuit is (pump - cpu - gpu - radiator) What did it look like?

herosformula · Post by **herosformula** » Sat Oct 11, 2003 3:39 pm

I have updated the pictures with some commentary and added some additional slides it should be much easier to follow now.
http://herosformula.org/watercool.htm

pingu666 · Post by **pingu666** » Sun Oct 12, 2003 3:52 pm

think u need to add a scrolly bar to the pics side :\

pingu666 · Post by **pingu666** » Sun Oct 12, 2003 3:53 pm

w00t 600 posts
cant belive i just said w00t :\

Gooserider · Post by **Gooserider** » Sun Oct 12, 2003 6:29 pm

pingu666:
think u need to add a scrolly bar to the pics side

A scrolly bar would be nice on both frames but isn't really needed... Just click on either the pix side or the thumbnail side and the arrow keys will scroll that frame up and down. At least that's the way it works in my browser...

Gooserider

(PS, congrats on the 600 posts....)

herosformula · Post by **herosformula** » Sun Oct 12, 2003 7:02 pm

scrollbars added

it is nice to get some posts after all those hits to my website, there is some serious lurking going on around here

Post by **MikeC** » Sun Oct 12, 2003 7:20 pm

I guess your system begs the question of how much noise that pump makes...

herosformula · Post by **herosformula** » Sun Oct 12, 2003 7:39 pm

The pump makes very little noise. You need to be within 3" of it to hear anything, and then only a low frequency hum, not the high pitched squeal of a fan. It does produce some vibration. I have it sitting on a towel which isolates the vibration, so I hear almost nothing. The vibration is transmitted along the tubes, however, so they must be kept away from case sidewalls otherwise you will form a drum (which plagued me the first day until I figured out what was happening)

Bat · Post by **Bat** » Sat Oct 18, 2003 3:51 pm

What pump is it?

pingu666 · Post by **pingu666** » Sun Oct 19, 2003 2:02 pm

i want some soft silicon tubing to solve the vibration issue:)

herosformula · Post by **herosformula** » Sun Oct 19, 2003 4:51 pm

The pump is a Eheim 1046 with Innovatek 12V modification. You can get it at a few places, but I like these guys http://www.frozen-silicon.de I originally started this project when I was shutting my computer off at night. With this setup, I can easily sleep with my computer on, so it runs 24/7 with folding@home. If I were to do it again, I would go for the mains version to save my PSU some heat generation.

Once I moved the Tygon tubing away from the side walls, I cannot hear any of the watercooling components beyond a couple of inches away.