This isn't that hard a problem. Visit the major fan manufacturers sites, buy the one that will fit, moves at least as much air as the original, and is much quieter. The manufacturers all list their products size (ie, the ones that will fit) and then check cfm and noise. For instance, I have bought fans from these guys a couple of times:
http://www.dynatron-corp.com/en/product_list.aspx?cv=20-72 Generally you have to go through a distributor and not buy direct, but that is no big deal. Jim Lux wrote: > -> acoustics of fans are a black art. Especially when they fail. We had a 20mm fan go bad in a sort of scanner recently. This itty bitty fan barely moves any air at the best of times (it cools a 486, which really doesn't need to be cooled) and under normal circumstances the fan is completely inaudible. The users contacted me and told me that scanner was making horrible mechanical failure sounds, as if the scan stage was scraping on something. I didn't measure it, but the sound was really loud, I'm guessing at least 85 decibels, and it really did sound like the end of the world. The sound came in bursts, with no noise in between. I'm guessing a bearing moving around in the fan, between a noisy position and a quiet one, or maybe it had developed some sort of resonance. All that racket was from one tiny fan. Regards, David Mathog [email protected] Manager, Sequence Analysis Facility, Biology Division, Caltech _______________________________________________ Beowulf mailing list, [email protected] sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
