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Originally Posted by unregistered
stacking fans is a truly terrible idea, get one the correct size
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Terrible in the sense of spending too much money? Too much energy for moving a given CFM through a particular resistance?
I had
thought that stacking fans would not change CFM but would increase pressure - and that if you didn't have sufficient pressure it might not be a bad idea.
My own (personal, very limited) experience it that "it depends".
For instance, stacking a second panaflo L1A at 5V delivered (reported by diode but exact same system) the same temps as a single L1A at 7V. I tried measuring 12V single vs 12V stacked and got the same reported temps for stacked and not.
This may have been a special case in that the L1A at 5V is pretty much stalled trying to pull air through a 2" core.
Or it may also be a (more typical) case of me not understanding what I'm doing...