sucking or blowing (for radiators)

[fruityness]

Currently I have the radiator fan drawing air through, like so:

case wall >> radiator >> fan >> exhaust >>

So it pulls air from outside, drawing it through the radiator. Is this the best way though for maximum benefit? Or should it be a case of:

exhaust << case wall << radiator << fan <<

Blowing air through, rather than pulling it.

Has anyone ever tried having a fan clamped to each side of the radiator? So you have one fan drawing air through, and on the other side of the radiator, another fan pushing air through.

 

[PV5150]

I used to run a push/pull fan config on my externally mounted 120.3 radiator.

Two fans in a push/pull config work better than a single fan pushing or pulling. However, if you want to just use singular fans then it all depends upon fan speed/power.

The high speed fans at 2000RPM with a 38mm fan thickness provided the best performance in a push condition. The slow speed fans with 1350RPM with a 25mm fan thickness provided the best performance in a pull condition. I would estimate that performance line is likely to cross in the 1500-1700RPM range where they are equal. So.... slow speed = pull, high speed = push, medium speed = it doesn't really matter.

(Source)

 

[fruityness]

I used to run a push/pull fan config on my externally mounted 120.3 radiator.

Two fans in a push/pull config work better than a single fan pushing or pulling. However, if you want to just use singular fans then it all depends upon fan speed/power.

(Source)

Thanks for the link, interesting read! Seems the way it's set now isn't best. So will be changing that! They mentioned shrouds, something which I hadn't even considered, and:

The fan in push with TFC shroud is producing nearly a 19% gain over a fan in pull.

It's remarkable what a simple change can do, and the massive effect it could have. Fine info.

 

[PV5150]

My pleasure mate and I'm glad you found it helpful.