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WC: Radiator Fan Stacking

@ 2004/12/06

Two fans are better than one, but with a noise penalty.

I received a number of emails asking to see if I could show what happens when another fan is added to a radiator - this gives two fans in a push-pull configuration. For a radiator with a 120 mm fan profile, this can yield some benefits in increased airflow - question is how much?

Comment from Xploited Titan @ 2004/12/06

Quote:

Originally posted by jmke

they are for sale NOW! go get one!

Well, ordered one on IA.net, the infamous Grootste IA 2de editie.

Comment from jmke @ 2004/12/06

Quote:

Originally posted by Xploited Titan
, that's why I'm watining for a rheobus

they are for sale NOW! go get one!

Comment from Xploited Titan @ 2004/12/06

Well, it's obvious, have one person pull a desk, have another person then push the desk at the same time, easier, isn't it?

Pure logic. But it's true, doubling the number of fans of same type (same sound level here) adds 2dB I think to the whole setup.

Thus, on my Thermochill 120.3 a Push-Pull setup of Medium Panaflos will increase my setup's noise from 45dB to 55dB.

uke:
Now, that's why I'm watining for a rheobus

Comment from Sidney @ 2004/12/06

That would be "double sides pull and push" short of any good term versus push and pull single sided, again short of any better term.

Comment from kr15t0f @ 2004/12/06

why dont try

rad
fan
rad
fan

wind tunnel with 2 fans

Comment from Sidney @ 2004/12/06

Very similar to my own experience with stack fans on heatsink; then, I also received many people who don't agree.

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