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Force Air Cooling

post #1 of 31
Thread Starter 
I am pretty new to the OC thing but in the week I have playing I have got rather infused with it and have been trying to come up with ways to push it a little bit further.

From what I have seen on the boards and with playing this past week it appears to me that temp is the be all and end all with overclocking and is the only real bottleneck.

I work for an electrical contractors and have easy accessibility to obviously electrical components and this is what I have come up with...............

Force air is really cheap and simple but unfortunatly quite big on the db (think it would not built it yet) anyway basically buy 2 or 4 (preference) 240volt high intake fans (about 15000rpm) build a cabinet of any material (dont really matter) put one on the front and one on the back to create a wind tunnel, strip the pc case of all sides so its just the frame remove all case fans and make things as aerodynamic as possible, the air will be forced in one side and out the other in about a second and create a kind of vacuum thus cooling the case and components, ever stood in a high wind on a cold day?

this sort of tech is very old but usually only used commercially because of the noise, call centre data rooms are cooled in exactly the same way, i couldn't tell you the exact temps but it will make water cooling feel like a hot bath ;-)

I will post some pics and even my CAD drawings (to scale etc) at a later date, let me know what you think
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post #2 of 31
Do it! I would love to see the test results.
    
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post #3 of 31
Sounds cool... There are things you could do to help quiet it a little bit.

1) Undervolt the fans (they'll still be plenty fast if they can handle 15k rpm)
2) Line the case you construct with a noise dampener (foam, neoprene, old cardboard egg containers, etc.)
3) Like you said, have as little resistance from the hardware as possible.

Another thing that would probably work really well would be to put that fan on the bottom of your case with the motherboard above it. For the top of the case have it, "open," but with some type of air filter. You'll only have one fan at 15k rpm but that'll still pull the air right the eff out. You could also try doing the reverse of what I said but that has it's own problems... I'm looking forward to seeing this!
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post #4 of 31
Bah! Don't worry about the sound! Keep those things running at 15k!
    
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post #5 of 31
Quote:
Originally Posted by Snerp
Bah! Don't worry about the sound! Keep those things running at 15k!
Imagine the dB of that! Even normal loudness over time will degrade your hearing. Unless the computer is in a vented closet or something this will be a factor in functionality. If you can't use the computer for more than an hour without taking medication for the headaches it's causing you might have a problem...
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post #6 of 31
Thread Starter 
I have already craked open Autocad06 and rang one of our suppliers for the fans sizes etc,

additional brainstorming idea...... as for sound deadening it would only need to be the intake and outlet of the fans, a sealed cabinet would contain the lowfrequency of the fans anyway and if I was make the cabinet out of perspex there would be very little vibration therefore decreasing the noise so I could tunnel the inlet and out let and just sound deaden that and as for additional cooling I could also build heatsinks into the above mentioned inlet tunnel to get a more constant temp level I will post back at around 2 with some cad drawings, if anyone else can use cad or wants to further modifiaction when I am finished they can mail me for the actual .DWG files
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post #7 of 31
Quote:
Originally Posted by Ty Auchter
Imagine the dB of that! Even normal loudness over time will degrade your hearing. Unless the computer is in a vented closet or something this will be a factor in functionality. If you can't use the computer for more than an hour without taking medication for the headaches it's causing you might have a problem...
Sound will be an issue i agree but at the end of the day you can undervolt the fans to a level where they wont be such a pain . This guy has had a good idea ( I think it is any way) better not to slate it before he,s had a chance to build it . When you,ve finnished the details i wouldlove a copy of the .wdg files ...Good luck
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post #8 of 31
Is this kind of set up ur talking about? minus the 15000 rpm fans.. tytlyfs rig
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post #9 of 31
Thread Starter 
Sort of but needs some streamlining, for one the dvd drives will be mounted in the cabinet not the case, the more resistance/deflection of the airflow the less effective it will be, we are basically aiming for a wind tunnel where the air will be forced through the cabinet, the higher you can get a streamlined speed the lower the temperature and the more condensed the air becomes, you can only fit so much air in at anyone time so once you have got that pressure where the air can no longer condense any further it begins to freeze hense the heatsinks so it will already enter the system at near sub levels giving a more constant temp level, this in mind optimal performance will be at least 5 minutes from boot when the fans have had time to do there work.

Theorectical I know but the same principal is used in Car induction kits, superchargers, inlets on jet fighters because the colder it is the more power it gives in the engine I am hoping that pcs follow the same principal lol

oh and you can have the fans on a switch or sensor so speed can be adjusted manually or automatically on temperature
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post #10 of 31
I only have AC14LE -- Are the files backwards compatible?
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