Lian Li Midi Tower with integrated Singlestage

[Patrickclouds]

I started to think about a new project and decided to cool this time one of my own computers with sub sero. I didn't choose my 24/7 rig but a computer that is also powerfull for gaming (lan prty with some friends).
So I ordered a Lian Li PC-9FB and placed some parts to see how it is possible to build a singlestage intern in the case with the computer hardware.

Nl11 would have been nice but i didn't find a condenser that fits on the rear of the case. The mutch better solution was to place compressor and condenser in the bottom of the case to make it as a "drop-in-solution".
The components are the following:
- Hitachy 6,45 rotary
- Mach 2GT condenser with two 6watt fans
- short DN8 stainless steal suction line
- huba control pressure transmitter
- 0,9mm 1,80m captube (so far)
- Temperature controller will be Aquaero 5 or something similar.

Pics:

[Patrickclouds]

And one picture of the Aquaero 5 during a minus temperature test

[Vetalar]

nice one!

[Jack]

Very cool Really small footprint.

Any performance numbers yet?

[andre X_X]

this is nice...

[Patrickclouds]

First temperatures today. Only had a 250 Watt 230V loadtester that was a bit much for the unit. Need to use my other loadtester which is better adjustable. Idle temps with the actual charge are -35°C.

[Patrickclouds]

Unit works great now. I charged it to hold the load of 220 Watts now with decent pressures. 16 bar at full load.

The results:
0 Watt Idle: ~-40°C



100 Watt load: ~-34°C



150 Watt load: ~-30°C



180 Watt load: ~-27°C



200 Watt load: ~-25°C



220 Watt load: ~-23°C

[Jack]

Definitely not bad!
I was afraid the condenser would crap out at 200W load...

[dejanbinladen]

man this little thing looks great

[mytekcontrols]

Very nice, compact, and great performance

[Vetalar]

don't You think 'bout mass production? i'd definitely buy one!

[Patrickclouds]

no mass production sorry

I finished the unit except the electric. Next to the small 12V powersupply I'll install another one for the relais and maybe the controller.

[tool_462]

This build begs for a Maximus V Gene and a chip that likes cold

[Patrickclouds]

Finished electric today. I placed a Danfoss NL11F next to the unit for size comparison.

[Vetalar]

beauty!!! how does it sounds? may be some video possible?

[Patrickclouds]

It's not a silent unit because of the rotary and the strong fans but I don't care about that
Power is everything

http://www.youtube.com/watch?v=WNKxM...1&feature=plcp

[Vetalar]

hmm... nice!!! interesting is there any possible way to make SS with small "footprint", low noise and stay within descent cooling power

[Patrickclouds]

With the same size it is in my opinion not possible to make a unit more silent while having so much cooling power. the 6,45ccm highly rotary was the strongest compressor i could find with that size.
if you go down with the fan rounds per minute you need a bigger condenser = more area.
and if you want a more silent compressor you'll have to choose a 12V or 24V rotary but they are very small (<2ccm).
Or use a piston compressor like danfoss TL/TLS/NL/FR series. The Danfoss BD series is a bit smaller but also very weak with only 2,5ccm of the BD50F. All in all the piston compressors need to much area.
http://www.quadrotek.ru/uploads/data..._brochure2.pdf

[mytekcontrols]

I am still amazed at high tiny and compact this unit is. You did a great job of planning the layout and taking advantage of every possible space.

Is that rotary compressor's footprint the same as the rotaries used in 5000 btu window AC's? Or is it smaller?

[Patrickclouds]

The compressor is not from an air conditioner but from an air dehumidifier with max. power consumption of 400watts. With r134a it has 2360 btu or 692 watts at 7,2°C. Displacement ist 6,45ccm.
In this PDF you can see all the specs and the size of the compressor:
http://www.ries-gmbh.de/index.php?mo...ter/Highly.pdf

I think it's smaller as a 5000 btu r407c rotary.

[DashTrash]

Super cool! I really like it!

[runmc]

Very nice job but I think your motherboard, video card, and everything else inside the case is going to get way too hot.

[Patrickclouds]

I hope not
The idea is, that the better airflow compensates the heat of the unit.
my main system with same gpu (gtx285) has in its case an idle temperature of 83°C and load during gaming is 97°C. So I have a good comparison between both systems. But you are right I will have a look at the temps when singlestage is working.

Best solution had been to mount the condenser at the rear fan and compressor in front of the case, but the "drop-in" solution was a bit easier to build.

[Patrickclouds]

Finished the computer yesterday after i had to replace the motherboard.

It runs very well. After view hours of gaming temp was still below -37?C.

Pic upload doesn't work so i link to our german Forum:
http://www.extremecooling.de/forum/t...ll=1#post62519

[n00b 0f l337]

Absolutely gorgeous Patrick, I threw up the pics on the facebook group as well. That's a showpiece right there.