confused about fan directions

A

aldy402

2[H]4U
Joined
Feb 23, 2005
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Hi, Im pretty new to all this. I need some help with my 80mm fans.
I just got a couple of 80mm fans but I don;t know which direction the fans are supposed to be facing?

I know there is intake& exhaust

but which is which? if you guys can show me or link me to a tutorial, It would be greatly appreciated

thanks
 
Usually the back is the exhaust and the front if the intake, but you can try switching the direction to see which works out best. Ill try to find a good airflow guide that discusses positive negative pressure and such for you to look over.
 
we can probably help you out without a tutorial. though it would be nice to know what you think the fans should be doing.

to start off, i'll go over the fairly trivial.
on the fan there are two arrows, one denotes the fan direction and the other shows which way the air blows through it.
fans in the front of the case blow in. fans in the back of the case blow out. the fan on the cpu heatsink should blow down unless you have something funky :D
 
damn this is all really confusing, this is what i know so far

i didnt see any arrows on any of my fans but i believe , with the fan label and the 4 lined zig zag grill facing YOU, the fan blows the opposite direction right?
 
ok, most fans pull air through the front (where ther is no "grill" on the fan itself) and push it out the back (where the suppports for the moter are)
 
also, fan blades are curved. the side that is concave is the side that the air exits.
 
so basically , lets say im doing a exhaust fan on the top of my case, the label and grill are facing me when im looking at the case right ?
 
If your fans font have arrows:

Place the fans in the case.

Turn on the comp, and if they're blowing air the wrong way, switch em.

Keep doing this untill all the fans in front are pulling are in, and top and back are blowing out.
 
aldy402 said:
so basically , lets say im doing a exhaust fan on the top of my case, the label and grill are facing me when im looking at the case right ?
Click to expand...
if by grill you mean the 4 plastic bars that hold the fan in place, yes.
 
(cf)Eclipse said:
if by grill you mean the 4 plastic bars that hold the fan in place, yes.
Click to expand...

yes the 4 plastic bars, you definetly put this in perspective for me, I finally get it LOL

i realized nobody has ever really done a article on this,only about ventilation

thanks, you all have a been a great help to me
 
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