Push-Pull Configuration - Queries?

victorpst · Post by **victorpst** » Fri Nov 02, 2007 7:58 am

I have some queries about running fans in push pull configuration:-

1. Very roughly, how much increase in airflow can be expected if using two similar fans?

2. Roughly, how much is the increase in noise over running a single fan if a fan of same type is added?

3. What should be the ideal/minimum/maximum distabce between the two fans?

4. Any other advantages/disadvantages?

Actually I have created a duct for fitting a 120mm in three 5.25inch bays of my Antec P182 cabinet. I was wondering if fitting an additional 120mm fan at the other end of the duct help.

andyb · Post by **andyb** » Fri Nov 02, 2007 8:03 am

Read this thread.

viewtopic.php?t=43880

Andy

eXa · Post by **eXa** » Tue Nov 06, 2007 1:02 am

Adding another fan in series like that doesnt increase cfm but increase static pressure. so if the fan is fairly free flowing it wont help. On a heatsink or radiatior wich induses a pressure drop it can help since u need more static pressure to push the air through. So dont think another fan in the 5.25 bay would help much;-)