On Wednesday 20 August 2008 19:40, Keith Alexander wrote: > No need > to do anything electrical, just change which side of the fan is facing > "out." Thoughts, anyone? Used to be that this was thought to be a Bad Idea, mostly because you can't pump air out without it leaking in somewhere, which was usually through the floppy disk drive - where the heads got coated in the crap that got dragged in along with the air. So it was generally agreed that the idea was to have a positive pressure in the case. Maybe dirty floppy drive heads are no longer an issue, but the principle that the inflowing air will be dirty is still valid.
Fact of the matter is, the leading edges of the blades will accumulate crap anyway, this will reduce their efficiency leading to less air flow & higher temps in the box. Some of my cases have several fans, some blowing in, some out (usually one more blowing in than out). They all get dirty. The worst build up is around the CPU heatsink fins, I have to vaccuum these out every six months or so. If you want to keep the innards of the case clean, then the only real option is to use a fanless cooling system - i.e. a massive finned case acting as a heat sink, maybe assisted with Peltier cooling modules or incorporating a miniature refrigerator to carry the heat away. Regards Brian Beesley _______________________________________________ Prime mailing list [email protected] http://hogranch.com/mailman/listinfo/prime
