++ ATOT official NEF thread part IV ++

[MotF Bane]

Doesn't matter, I have my Watercool, and I'm not switching blocks again. Switching platforms would be costly enough without adding another copper block to it.

 

[Rubycon]

The external cooling tower uses MORA3 radiators (four 9x140) in parallel with flow diverters. An Iwaki RD30 pump with a variable speed controller is used as the prime mover.

 

[MotF Bane]

Mmmm, Iwaki. I never could justify one of those for my loop, and I couldn't afford the expanded loop and attendant case to justify the Iwaki's power.

 

[HAL9000]

I don't understand trolls.

 

[Rubycon]

If you run a large loop it comes in handy. This system is no ordinary system by far.

Here's the first build from last summer. This is just the cooler!

http://www.youtube.com/watch?v=Lb24StKYLJE&

 

[MotF Bane]

HAL9000
This message is hidden because HAL9000 is on your ignore list.

 

[MotF Bane]

If you run a large loop it comes in handy. This system is no ordinary system by far.

Here's the first build from last summer. This is just the cooler!

http://www.youtube.com/watch?v=Lb24StKYLJE&

The most I ran was CPU and GPU, and those were older ones with lower wattage. I've never had the funds to build a really large loop.

 

[satyajitmenon]

Le nef

 

[MotF Bane]

Wow, that's huge. The box structure of the radiators isn't the best idea though, they're better off spread out.

 

[Rubycon]

Wow, that's huge. The box structure of the radiators isn't the best idea though, they're better off spread out.

It actually was done up in ALGOR and is quite efficient. (verified) This concept is hardly new as air conditioning condenser units have been doing this for decades.

The fans pull air in from top and bottom and discharge through the rads to the outside.

With 1.5kW heat load the water temp with just 1GPM flow matches ambient temp! :biggrin:

 

[MotF Bane]

Need to snack before bed.

 

[satyajitmenon]

Sie nef

 

[satyajitmenon]

Pie > *

 

[MotF Bane]

It actually was done up in ALGOR and is quite efficient. (verified) This concept is hardly new as air conditioning condenser units have been doing this for decades.

The fans pull air in from top and bottom and discharge through the rads to the outside.

With 1.5kW heat load the water temp with just 1GPM flow matches ambient temp! :biggrin:

Compare its efficiency against a spread radiator formation.

Also, the heat load isn't saturating, you have significantly more cooling power than you need.

2 degrees delta on a 3x120 is... oh, 200 watts at 1500 RPM and 1 GPM? The 9x140 is going to blow that away, at least triple, better than that really. So probably 700 W, 1500 RPM, 1 GPM, 2 C delta. Four of those radiators gives you 2.8 kW of cooling.

So yeah, you're way way underloaded.

 

[MotF Bane]

Nef!

 

[satyajitmenon]

Nef nef

 

[MotF Bane]

Narf.

 

[alfa147x]

Almost done rebuilding this db

 

[Rubycon]

Compare its efficiency against a spread radiator formation.

Also, the heat load isn't saturating, you have significantly more cooling power than you need.

2 degrees delta on a 3x120 is... oh, 200 watts at 1500 RPM and 1 GPM? The 9x140 is going to blow that away, at least triple, better than that really. So probably 700 W, 1500 RPM, 1 GPM, 2 C delta. Four of those radiators gives you 2.8 kW of cooling.

So yeah, you're way way underloaded.

Spreading them out was /is out of the question.
Other radiators just pale in comparison. The test load started with three 120.3 radiators. Unacceptable deltas reached in just two hours with both CPUs loaded. With four GPUs (590x2) deltas approached 15C. Unacceptable. The system must be able to sustain decent temps under 24/7 load for months.

A Koolance E2kRM was also trial runned and failed. They are supposed to handle 2kW! Severely over rated! Unless you're running multiple systems - at stock frequencies allowing CPU temps to reach 80C! Not happening.

Yes each MORA3 can handle 2+ kW at a fairly decent delta.
With 1.5kW load it basically laughs.

 

[MotF Bane]

Nef.

 

[MotF Bane]

Koolance is garbage.

You barely even need fans.

 

[Rubycon]

OTOH it would be interesting to see how hot it could make a room by running 190F water through the rads with the fans on high. :biggrin:

(or run 46F water through it to make an air conditioner!)

Yes the fans are set to run at 9V and barely audible.

 

[Rubycon]

I feel like by the time *I* actually receive this hardware it will be outdated.

 

[MotF Bane]

Nef.

 

[Rubycon]

At least he was nice enough to send me a pair of macbook pros for my troubles. :biggrin: