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Old 2nd May 2012, 9:14 AM   #1
Psychotria Thread Starter
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Default What's a shroud?

Related to water cooling (I just read the term in the water cooling forum). I googled and can see what they look like, but I don't understand what they do. Should I get a pair for my kuhler 920?
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Old 2nd May 2012, 9:25 AM   #2
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they are like a spacer... you can make a ghetto one by removing the fan blades and hub from an old fan.

whether they are useful depends on the fans static pressure and the fpi of the rad. I personally don't use shrouds as they take up too much space

yeah... beat Creekin
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Old 2nd May 2012, 9:50 AM   #3
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Hmm ok. Thanks for the explanation. I'll probably not get any for now then. I have about 30 million old 120mm fans (ok, maybe not that many), so I might do some experiments, though!
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Old 2nd May 2012, 9:52 AM   #4
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Originally Posted by HeXa View Post
yeah... beat Creekin
DAMN YOU!!!111

the main purpose is to reduce the size of the dead spot created by the hub of the fan.
old fans with the guts removed make perfect shrouds
personally though i dont bother with them.

http://www.coolingtechnique.com/mart...ng-Review.html
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We should do juice swaps.
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Old 2nd May 2012, 10:01 AM   #5
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Hahah. Thanks Creekin; that's the article I just read (you linked to it in another thread) and made me ask the question

Edit: it's a very good article (nice methodology) and I've bookmarked it

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Old 2nd May 2012, 10:41 AM   #6
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A shroud forces the air to go through the radiator. Without it, the air will just go around it because there is less resistance.
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Old 2nd May 2012, 10:46 AM   #7
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Everything is becoming clear now... well, as clear as mud anyway I think the best thing for me to do is dismember some of my spare 120mm fans and see if shrouding makes a difference for me!
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Old 2nd May 2012, 12:42 PM   #8
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A shroud forces the air to go through the radiator. Without it, the air will just go around it because there is less resistance.
in a car engine yes
but rad fans bolt flush to the rad so thats not much of an issue here

silicone gaskets do the same gig
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Old 2nd May 2012, 3:54 PM   #9
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This roundup may help choosing a radiator fan;

http://www.tomshardware.com/forum/33...g-roundup-2012

Although I have nfi which charts to look at
Restricted CFM test looks like the logical choice for pull fans, db tests are at the bottom.

The Gelid wing's look good though, and come in a 4 pack, there's also a deal on Scythe 1850 GT's here if your after 4 or more.
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