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Fan Shroud Configuration

M

mecra

Limp Gawd
Joined
Apr 7, 2006
Messages
173
Hey guys. Hopefully easy question.

With regards to fan shrouds, is it good to have a shroud on each fan in a push/pull configuration? Or do you only need a fan on the push fan? I'm thinking the former because you still need the air to be able to move through the middle section of the rad that's restricted by the pull fan.

Also, I'm using 30mm shrouds. Will that be ok or is that too long? (I've read that 20-30 is sweet spot, but I've seen benches with 50mm that dropped like 4-5c.)

Thanks!

-edit-

I found what I was looking for in this article: http://martinsliquidlab.i4memory.com/Radiator-Fan-Orientation-And-Shroud-Testing-Review.html

Basically, 30 +- is the best size for a shroud but that can vary depending on the FAN. Also, having shrouds on both sides of the rad produce the best results for cooling. So I answered my own question. ;)
 
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I think on the push, a shroud helps a lot because the area directly under the hub of the fan usually is a dead spot, by moving it away, you get some air there. I use push/pull on each of my radiators, and dont have any more room for shrouds, but it still gives pretty good performance.
 
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