WC: Radiator Fan Stacking

jmke · 6th December 2004, 13:19

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?

http://www.overclockers.com/articles1155/

Sidney · 6th December 2004, 14:06

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

6th December 2004, 15:56

why dont try

rad
fan
rad
fan

wind tunnel with 2 fans

Sidney · 6th December 2004, 16:01

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.

6th December 2004, 16:38

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

jmke · 6th December 2004, 16:47

Quote:

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

they are for sale NOW! go get one!

6th December 2004, 17:40

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.

6th December 2004, 13:19	#1
jmke Madshrimp Join Date: May 2002 Location: 7090/Belgium Posts: 79,019	WC: Radiator Fan Stacking 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? http://www.overclockers.com/articles1155/ __________________

6th December 2004, 14:06	#2
Sidney Member Join Date: Mar 2004 Posts: 15,738	Very similar to my own experience with stack fans on heatsink; then, I also received many people who don't agree. __________________ lazyman Opteron 165 (2) @2.85 1.42 vcore AMD Stock HSF + Chill Vent II

6th December 2004, 16:01	#4
Sidney Member Join Date: Mar 2004 Posts: 15,738	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. __________________ lazyman Opteron 165 (2) @2.85 1.42 vcore AMD Stock HSF + Chill Vent II

6th December 2004, 15:56	#3
kr15t0f Posts: n/a	why dont try rad fan rad fan wind tunnel with 2 fans

6th December 2004, 16:38	#5
Xploited Titan Posts: n/a	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