Is the original fan controlled by a temperature sensor? That is the best way to control noise because the fan runs at lower RPM most of the time and high speed only when needed. So the airflow and noise is only as much as is required,
They make retrofit kits, fans with sensors most for use in old PCs but you can use them anyplace. Typically there is a pot you adjust to set to desired internal use tempature. Almost all new design hardware is like this. Notice the newer fans use three wires. One of then is a tachometer sensor to provide RPM feedback to the fan controller. It costs only a little to retrofit one of these. Look were they sell computer parts. On Mon, Nov 21, 2016 at 9:57 AM, jimlux <[email protected]> wrote: > On 11/21/16 6:39 AM, Charles Steinmetz wrote: > >> Tom wrote: >> >> EFB0412MD >>> Airflow 7.17 CFM >>> 6300 RPM >>> Noise 24 dBA >>> >>> FBK04F12U >>> Same exact form factor. >>> Air Flow 9.2 CFM >>> 9500 RPM >>> Noise 42 dB(A) >>> >> >> Note the 18dB greater noise (that's a HUGE difference). Even with bad >> bearings in the original fan, it is probably considerably quieter (by >> 10dB or more) than the proposed replacement. On the other hand, the >> replacement moves 28% more air, which may be a good thing. >> >> > That's a 40mm fan, which is a standard size, I'll bet you can find a > slower turning/quieter fan. > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/m > ailman/listinfo/time-nuts > and follow the instructions there. > -- Chris Albertson Redondo Beach, California _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
