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[Scratch build] Small submersion project...

post #1 of 5
Thread Starter 
First project on OCN, lets see how this goes... thumb.gif

First a little background, I've been dabbling in mineral oil submersion for about a year now. My current system has been running submersed for around 6 months, haven't had an oil related problem yet. It takes about 5 gallons of oil and is a complete beast to move around. it is powerful enough, but quite bulky and slippery (still have one small leak that needs fixing...). I want something much smaller and lighter that I can haul around to lan parties, one idea led to another and I settled on the following.

What I have so far:

AMD A8 3870k processor/graphics
Asrock A75m-ITX motherboard
2x4gb Crucial 1866 ram
Sparkle 80plus 300w flex/server psu

450

Not shown:
mcp655 pump
100gb ssd on the way

What I need:

More 1/4" acrylic
Various fittings
240mm Radiator
APU waterblock
Tubing
Oil (probably < 1 gallon)

The plan

Mini ITX motherboard + AMD APU + small psu + oil = awesome.

*drawing in progress"
492

I'm still working out how it's all going to fit together, and I'm not entirely set on the layout above. What it doesn't show is the pump, which I was thinking of placing directly below the radiator. I am debating between two 'loop' orders:

1: tank>pump>cpu>radiator>tank
2: tank>cpu>pump>radiator>tank

Because the whole tank must be oil tight (except for the lid) it becomes quite a chore to plumb through the wall, so it is a good idea to include a (w) for when it passes through a wall.

1: tank>(w)>pump>(w)>cpu>(w)>radiator>(w)>tank
2: tank>cpu>(w)>pump>radiator>(w)>tank

Looking at the above it becomes quite obvious that loop 2 is easier to make and, probably, uses less tubing and has less bends, which would be easier on the pump. The pump can likely handle whatever I throw at it however I'd like to run it as slow as possible, or at least as quiet as possible.

My question is can a mcp655 generate enough suction in its intake to handle one cpu waterblock? I've never seen it done before, everyone always seems to put a reservoir directly prior to the pump. Thoughts?


More pictures and updated drawings to come...
Edited by RedShades - 3/31/12 at 11:56am
post #2 of 5
I don't see why a waterblock is necessary. Couldn't you put a stock cooler without the fan into the oil and then simply circulate the tank oil through the radiator. In my imagination I see a setup where "loop" intakes from the top of the case, passes it through the radiator and then back into the case. That way you've got natural convection working for you and you don't deal with unusual waterblock issues.
post #3 of 5
Thread Starter 
That is what I did in my first one, there is no doubt it works. If I only wanted something that works, that is the route I would go. The problems are heat sinks tend to be a lot thicker than water-blocks, so I'd have to make the case wider. Going for max thinness biggrin.gif

Oil temps are also helped quite a bit by using a waterblock, because it can pipe the cpu heat directly to the rad without letting it dissipate in the rest of the oil.
post #4 of 5
So im lost on why the oil at all... I think you would be better served just building a thin acrylic case and running a water loop. headscratch.gif

I have zero fans circulating air in the cabinet my system is in and my loop keeps everything else cool.
Edited by no_safe_HAVEN - 3/30/12 at 8:29pm
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(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i5-3570k ASUS P8z77-I Deluxe MSI GTX 980 Gaming 4G Samsung MV-3V4G3D 
Hard DriveCoolingOSMonitor
Samsung 840 Evo ThermalRight Macho Rev B Windows 7 Professional 64bit Samsung SyncMaster P2450 
KeyboardPowerCaseMouse
Logitech MX 3200 Rosewill GreenPower 630W Custom Built mITX bench made from the carcas of... Logitech M510 
Audio
Onboard 5.1 
  hide details  
Reply
Top Heavy
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i5-3570k ASUS P8z77-I Deluxe MSI GTX 980 Gaming 4G Samsung MV-3V4G3D 
Hard DriveCoolingOSMonitor
Samsung 840 Evo ThermalRight Macho Rev B Windows 7 Professional 64bit Samsung SyncMaster P2450 
KeyboardPowerCaseMouse
Logitech MX 3200 Rosewill GreenPower 630W Custom Built mITX bench made from the carcas of... Logitech M510 
Audio
Onboard 5.1 
  hide details  
Reply
post #5 of 5
Thread Starter 
Really the only thing that matters is I think it's cool, and there's no convincing me otherwise rolleyes.gif

Been playing around a bit, settled on this... About 14" long, 12"tall, 2.5" wide at the top and 5" at the bottom, for a bit of stability...
443

Just working out the little things now, probably start chopping up some acrylic tomorrow.
Edited by RedShades - 3/30/12 at 11:28pm
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