My cooling towers(pics), not finished.

jamesavery22 · Post by **jamesavery22** » Mon Oct 18, 2004 4:47 am

Pump and block should be in soon and I'll post results. Just wanted to share my progress

DryFire · Post by **DryFire** » Mon Oct 18, 2004 12:17 pm

are those transmission coolers?

TheDarkHacker · Post by **TheDarkHacker** » Mon Oct 18, 2004 12:45 pm

ya those are transmission coolers. i suggest you put the duct all the way down the coolers and maybe somehow mount a 120mm fan on top because that will give you more airflow and will be quiter

Mr_Smartepants · Post by **Mr_Smartepants** » Mon Oct 18, 2004 4:28 pm

That's a pretty elegant design!

What are your clearances between the fan blade tips and the internal wall of the tubes? The closer the clearances, the more efficient the airflow will be. If you can't get the clearances tight enough, you might experience pressure loss or blade tip turbulence. You might be better served by using a 80/92mm->tube adapter and bolt quiet 80/92mm fans to the adapters. That would increase both airflow and efficiency.
Although, you can't deny that with the exception of the wiring, it's really eye-catching.

Pjotor · Post by **Pjotor** » Mon Oct 18, 2004 9:49 pm

What's the size of the coolers? It's hard to judge from the pictures...

Bat · Post by **Bat** » Tue Oct 19, 2004 8:15 am

Looks smart.
Suggestions:
1. Extend the tubes downwards almost to the bottom of the fins.
2. Extend the tubes upwards as high as possible (perhaps to a foot below the ceiling) and you might find you no longer need fans. If you do this, it would also help to make the tubes wider in the section above the fins. It might be convenient to combine the two smoothly into one for the upper section.

DrCR · Post by **DrCR** » Tue Nov 09, 2004 2:53 pm

Bat wrote: 2. Extend the tubes upwards as high as possible (perhaps to a foot below the ceiling) and you might find you no longer need fans. If you do this, it would also help to make the tubes wider in the section above the fins. It might be convenient to combine the two smoothly into one for the upper section.

Why would that work?

ChucuSCAD · Post by **ChucuSCAD** » Tue Nov 09, 2004 4:03 pm

DrCR wrote:
Bat wrote: 2. Extend the tubes upwards as high as possible (perhaps to a foot below the ceiling) and you might find you no longer need fans. If you do this, it would also help to make the tubes wider in the section above the fins. It might be convenient to combine the two smoothly into one for the upper section.
Why would that work?

Extending the tubes like this will generate what is known as "stack effect". Hott air naturally rises and will suck in cool air at the bottom. The longer the tube the better this works, even though the heat source is at the bottom.

However I think purchasing 2 8' long clear tubes would be too costly to simply try out.
try plugging your #'s into this link:
http://chuck-wright.com/calculators/stack_effect.html

and see what happens, if it looks promising I would go that route.

If not I would suggest mounting a 120mm-80/92mm adapter to the top of the tube and use a low speed fan to suck air out of the top.

chucuSCAD

jamesavery22 · Post by **jamesavery22** » Wed Nov 10, 2004 1:11 pm

right now Im running them passive (just yanked the fans off). 20c ambient, 41c load 24/7. Im going to removew the tubes and see how it effects temps. Im also going to add 3 low flow blocks (NB, GPU, PSU).

But thats up and running right now so I'll leave it be while I finalize my other project (the large heatsink one). Got tons to do and no time...

neologan · Post by **neologan** » Fri Nov 12, 2004 8:24 am

Looks really nice, what a good idea. What's the spec of your rig to get that 41c load temp passively?

Bat · Post by **Bat** » Wed Nov 17, 2004 12:32 pm

Could try the tall chimney with cardboard or whatever first to see how well it works, only changing to something prettier if successful.

jamesavery22 · Post by **jamesavery22** » Thu Nov 18, 2004 1:06 pm

neologan wrote:Looks really nice, what a good idea. What's the spec of your rig to get that 41c load temp passively?

Was a barton clocked at 11x183mhz, raised it to 11x200mhz so its right at 3200+ specs, at 23c room temp passive temps are 44-45c. But now I need new ram =( My pc3000 doesnt play well at 400mhz since I cant raise the voltage.

Im adding a GPU block, NB block, and a PSU block, Im sure my temps will hit mid 50s while passive. But I'll be placing the PC in my living room which is much more open and much colder.

Im removing the "chimnys" all together to see how temps go. I want as much of the fins exposed to the air as possible. I'll play with something like a cardboard shroud later to see if it gets better temps.

jamesavery22 · Post by **jamesavery22** » Wed Feb 02, 2005 5:29 pm