Quote:
Originally Posted by
Monsinour http:///forum/thread/386377/gauging-interest-people-interested-in-diy-led-builds/20#post_3393698
I dont get how that would be the case. CPU Cases are designed on this princeple. Suck the air in on one side and blow it out on the other. Contstant air movement though the case keeps the PC cool. LEDs arent going to get as hot as a processor or memory so it should work just fine. As long as there is adaquite airflow through the tube and there is plenty of surface contact for the heat to disipate onto and off of, it should work just fine. I would be more leary of a "C" channel as you would have to have fans every so often just to keep it cool. I thought I saw someone put something like this (tube not channel) together on a different forum. Not on RC but on R2R.
I had wondered about this as well. The square tubing is much easier to come by at the lowes and the depot down here. Folks claim that it acts more as a heat trap for hot air inside the tube. I also thought about having fans blow through the tubes. I know some people are using it but haven't seen any real world testing or long term results to say whether or not which works best. For me where I ran into a road block was with design. Finding a good way to get enough air flow through the tube to cool the entire thing effectively.
And then I wondered if one side was getting cooler air coming in while the other side was pulling warmer air out, would one side stay cooler than the other, or would there not be much of a difference to be even worth mentioning?
Also, would you go with large tubes, like tubes large enough to mount the smallest pc fans on either end? Would you try to make some type of housing or manifold to catch all of the air flow from the fans and direct them down the tubes? Or would you just have a series of fans on either side of the tubes pushing and pulling in the same direction of the tubes?
It just seemed to me that in order to make it more effective would require more work. But not out of the realm of possibility by any means.
I'm probably going to order a heat sink from heatsinkusa.com. If I decide to go linear with the design I'll just cut it into thinner strips like the ones they sell at rapidled.com. Since I'll probably going with a higher amount of leds than what is really needed I'd rather just play it safe. Cost wise I think you get alot more bang for your buck that way. Unless you can find a really good deal on the channel or tubing then heat sinks seem to be a better way to go in my book for about twice the cost of the tube or channel. At least for my plans anyway.