I'm trying to make a duct that will basically be a clear tube (as featured in Linear's intake fan) with a square cut out of the middle of it so it can go around my AMD 900 slot CPU. I can't decide the best way to cool..... airflow & all, so here is a small diagram: It is a desktop PC case (from the 80's) and the tube would go clear from one end to the other, with a fan on either side. Should I use airflow A, or B? ARG!! Late for Physics Lab!!! See you all later! -OneSeventeen GoAhead
since it is just a matter of turning one of the fans around, I would try them both and take some temp readings to determine which works best. I like the idea of "b" for dust reasons but results are what count.
the problem with b would be the fans are working *against* each other... a would be more effective. or the opersite to A might be even more so....again the fact of the fans blowing againt each other crops up agein
Due to my paranoia of things melting, there will be some distance between the tubing and the heatsink, so there should be a little bit of space for air to get in and out if I use plan B. If I do use B, I will probably have three or four intake fans throughout the case as well... -OneSeventeen GoAhead
Why don't you run a duct straight to the fan on the CPU? It seems a lot of air will be wasted shooting through those two fans.
The worst thing about buying premanufactured computers, is crappy parts. The board & everything comes from an HP, so there are no fans on the CPU... strictly Heatsinking & ducting... After college I'll spend some $$ & get something worthwhile... -OneSeventeen GoAhead
I see where you are coming from then... I suppose your way would work pretty good if you had it nice and sealed up - I think I misinterpreted the idea at first. You want to run the ducting into one side of the heatsink, and send the air through to the otherside where a nother fan pulls.. I don't know what I was thinking.. lol.
If they are good high flow fans you could hit two birds with one stone. Cut the hole a little alrger than you needed to and reverse b. That way you could have the air cool your cpu and escape to cool some more needed componets. Im with the guy who said they would eb fighting each other, if you put eact duct on a sloght angle so the axies of the fans are not in line you will have better airflow. Form a v instad of a line.
Good Idea One of my roomates thought that a straight line would just be wasting a fan, and I think he was thinking the way you are too, shift. I may just put a single flexible tube in it instead though, because I don't have all the space in the world, unfortunately... (slowly I'm becoming more realistic) I'm going to have to mod the case a lot just to get the board, hard drives, and PSU in there for now. I'll post some pix in a new thread as soon as I can find a digital camera to take them with. I need some opinions on other stuff anyway. Thanks, -OneSeventeen GoAhead
Actually if you had some flexible ducting, you could just cut a square hole in the side and put it right around the heatsink, it would probably be pretty easy.
This seems like an effective solution to me. Some ideas you can use for the ducting would be clear tube from a local hardware store. They sell for like a $1.09 a foot. Also you could if you really wanted to use plexiglass one A) heat it and bend it into a tube like shape, or B) take 4 different sheets of plexi and glue them together to form a box like shape.
Another possible idea for ducting... in a lot of the older pent boxes (ie...Compaq's) they used thin cardboard with a light wax coating to direct airflow from a fan to blow over the heatsink... may be an easier way to go at least for testing the idea out and a bit more forgiving in a tight case esp. before you cut up a bunch of plexi.
Great Idea! That is a really good idea! I'll try that and let everyone knows how it turns out. (unfortunately this will be after my Economics test Tuesday)
