Will this blow anything up?

[Lucas]

I was thinking about the best way to get cool air to my cpu last night, and I came up with the great idea. I haven't ever seen any one else do it, so I was wondering if maybe it was a bad idea. Would it be ok to build a kind of tube/port/tunnel type thing from the outside the case to cpu? With a fan blowing down on the heat sink it would effectively pull cool air in directly to the cpu heatsink. If it was say 60 degrees outside of the case and you were blowing that cold air in, would that be too cold? Basically is there anything faulty in this great idea?

[Ridenow]

Welcome to the forum.

We call your idea "ducting", it is fairly common. Some use something like dryer vent tubing, some use sheet metal. Depending on your setup the cooling is pretty good.

[Wa11y]

Originally posted by Lucas
I was thinking about the best way to get cool air to my cpu last night, and I came up with the great idea. I haven't ever seen any one else do it, so I was wondering if maybe it was a bad idea. Would it be ok to build a kind of tube/port/tunnel type thing from the outside the case to cpu? With a fan blowing down on the heat sink it would effectively pull cool air in directly to the cpu heatsink. If it was say 60 degrees outside of the case and you were blowing that cold air in, would that be too cold? Basically is there anything faulty in this great idea?

Hoot Chute!

[Blue Jester_2112]

Haha,

Great thread title.

Welcome to the forums, like the man said, adding a duct to bring in cool air is fairly common and, if its done right, can enhance cooling.

Good luck.

[Krusty]

Dryer ducting or sheet metal is not totally necessary. I've got a 120mm fan on a duct I made out of cardboard and duct tape. It works perfectly and was practically free!

[klosters64a]

Cardboard is fine. As always, you want no chance of anything "coming loose" inside your box. I find that a powerful fan drawing air into the case MUST be filtered. Such a Sargasso Sea of brown webs of dust waving disgustingly from every thing inside your box, you don't want to see. 5 hours of painstaking cleaning--or a $5 filter.

Or an almost free filter, a used anti-static sheet from the clothes dryer, masking-taped to cover the inlet. They're good for ~4 days or more of 24/7 operation, depending on your area. Fresh scent, too!

[Krusty]

Originally posted by klosters64a
Cardboard is fine. As always, you want no chance of anything "coming loose" inside your box. I find that a powerful fan drawing air into the case MUST be filtered. Such a Sargasso Sea of brown webs of dust waving disgustingly from every thing inside your box, you don't want to see. 5 hours of painstaking cleaning--or a $5 filter.

Or an almost free filter, a used anti-static sheet from the clothes dryer, masking-taped to cover the inlet. They're good for ~4 days or more of 24/7 operation, depending on your area. Fresh scent, too!

My duct came loose once. Took me an hour before I realized it could be something inside my computer that is making the thing overheat. As for the filter, I bought a 120mm fan filter that clips right on the fan and doubles as a fan guard.

[Lucas]

Yeah I was thinking about doing a metal one but after thinking about it for 6 seconds I realized that cardboard and duct tape would be a lot easier. I'm going to put it in as soon as I can get my case cut up.

[Krusty]

just dont use the duct tape to fasten it to the side of your case. Mine fell off after a couple days and then I took another cheap route and used a couple twist ties.

Also, you don't want the duct to actually touch your heatsink. From what I have heard, you get the best cooling when the end of the duct is about an inch away from the heatsink.

[Sonny]

Try this(pic below). It's a Velocity Stack design that'll keep the pressure & CFM constant even if you make the exit smaller & a 2Ltr. coke bottle is all you need.:D

[Sonny]

This is how you mount it to the fan.

[-EternitY-]

You can NEVER Have a too-cold CPU.

But... If it's to humid outside.. That could cause problems.

...

EPOX 8KHA
384MB Of PC2100 Kingston DDR Ram
1600 XP @ 1800 XP (1.55 TBIRD)
Antec 330 WATT PSU Almost Full Tower BLACK
10X DVD
CD Burner (Not Sure of Speed...)
GeForce 2 PRO StarForce Z81
Soundblaster Live 5.1
...And lots more...

Im also selling a 1.4 W/ ECS K7VTA3 And a 700 w/ Motherboard everything intergrated all needed is case, psu and set to go.:mad:

[el]

very nice and looks great!

[mw521]

I do it every day. nothing blown up yet and it gets better the colder it is outside. Best part is it's free chillin'.:beer:

[dreadlord79]

Like was mention above, humitity is bad. A little is OK because you really can't be free of it and if you did, the static electricity would suck! I wouldn't bring air in from the outside of the house unless you were sure that no rain, snow, fog or mist would get in it, because even if it doesn't hurt your comp., it could take out your cardboard duct.
Welcome to the madness! :D

[kronchev]

<smacks forhead> DOH!

'tis a very common practice in teh modding community. it works well too. and too cold is like -50, ideally a proc should be running BELOW 60 degs



n00bs....:D

[kronchev]

Originally posted by sonny
This is how you mount it to the fan.

no offense, but that design sucks. the whole keeping the pressure and CFG constant in the stack is good, but the fan isnt flush against the tube. doesnt seem like itd move a lot of air. just my opinion tho

[JFettig]

nah hes prob talkin degrees f
and some people have cooled with liquid nitrogen wich cools it like -50c or so

you basicly can NEVER cool too cool
mine runs at 19-21c never higher, with a hsf and im watercooling soon and hoping for the 17c range or lower without a tec