Building new system question

[cadmonster66]

To all please help,

I was writing between cadcam and couple other people. I have been building a new system and I bought a extra case fan for the back of the box. My question is,I cann't remember when putting the case fan in does the fan air flow direction go into the case or out

thank you

John

[cadcam]

Well the Power supply fan pushs out.

The power supply should have vents to suck some of the air from the box.

 

The other being the new one can pull new air in as the other pulls the old out.

 

[ 03-09-2002, 10:38 AM: Message edited by: cadcam ]

[cadmonster66]

Ok cadcam,I checked the airflow for my power supply on my new case and it seems to be pushing the air out of where the power supply box is. Now for the case fan. I seem to forgot to mention that on the left side of the box it is not solid the manuf. Decided to put venting holes on the side. Should i still have the new case fan forcing the air out since the power supply seems to be doing that even with the power supply being in a small enclosed in part of the case.Or let the case fan blow air into the box and let that airflow escape through he vent holes in the side

Thank you for your time

John

[cadcam]

I would have it suck the air in still.

Trying to get some fresh in.

 

Even with the hole in the case this will still help push the old out.

[cadmonster66]

So in otherwords have the case fan so when you feel it the forced air is going into the box. ( you can feel the air blowing into the box

John

[cadcam]

YEP!! Thats the ticket.

On the side of the fan you will see arrows.

one points showing the direction of the air & the other shows the rotation.

[cadmonster66]

OTAY,

got ya thanks pallllllllllllll

john

[gstephens]

There are a couple of other things to consider with this subject.

 

First, the power supply fan pushes air out of the box. If you have too many of these type of fans, you can actually increase the temperature inside by creating a vacuum. You have to have enough "openings" in the case to support the pull of the fans.

 

Second (Almost always overlooked and probably more important), where the box is going to be will make a HUGE difference as to where (and what direction) the fans should be. If you are putting the case on the floor, you should only add an "inward" fan if it is mounted higher up in the case (on the back perhaps). A floor sitting case with an intake fan at the bottom will tend to get VERY dusty inside. Check out your surroundings and think about which areas get less dust build up. that is where you should keep the box, and should also help decide the placement and orientation of fans.