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Twin Frozr III Airflow - Page 2

post #11 of 35
Quote:
Originally Posted by Kung Pow View Post
I meant it was different in terms of watercooling.
But you are right it is a magic case which not only defies the laws of physics it creates its ownThere is no hot air in a Little Devil Case so sry for opening that thread xD

No but seriously, you are right of course ...technically fans should not be placed together when operating in the opposite direction but with such low rpm fans it may work.

Still I won´t do it ....top= exhaust , rear = exhaust and front intake.

Only problem is that I only have 1x140mm intaking air.
Also that fan is placed before the hard drives which will also kill some airflow of it.
Which is why I thought I could place a fand behind the cage to enhance the front one a little.

And an extra one to blow directly on the two Twin Frozr III´s.

What do you think?
I think you should mount your hard drives in the 5.25 bays if you arent going to use all of them for full size drives and leave the front fan open just for an air intake.
    
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post #12 of 35
Thread Starter 
Yeah you are probably right.
But still a single 140mm won´t be enough for intake.

If you look at the picture on the first site you can see there is a fan mount right under where the bottom gpu will be.

That is originally for the PSU.
I might put a fan there for 1.)directing the exhaust air further to the top because the fact that hot air rises is not absolute and 2.)extra and direct cooling for the gpu´s since the cool bottom air will be perfect for it.

Also a little side note considering the "hot air rises" thing^^
It is not that easy.
Physically the actual tempreture decides how fast and how dense the "hot" air rises.
The temps of the air in a case aren´t high enough to really shoot the hot air upwards, nontheless it still has a tendency to remain higher than cooler air of course.

The hot air is rather stale and residing than actually moving upwards which is why it needs vortex´s created by exhaust fans to be exfiltrated.
So don´t think it just automatically moves upwards directly to the top fans.
And that is why a top intake isn´t that dumb actually because it mixes the hotter air with cool air and reduces its core to the rear exhaust and at the same time negates the probability of the top card sucking in the exhaust air of the lower one before even having a chance of being exhausted by either the rear or top exhaust fans.
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post #13 of 35
Quote:
Originally Posted by Deluxe View Post
Always put fans in the top as outtake, hot air rises.
Twin Frozr throws all of it's air into the case btw.
I have to disagree with you. Half the gpu heat is directed to the back. Its also not always wise to have all the top fans as exhaust.
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post #14 of 35
I borrowed the attached picture from ehume who is an excellent resource on airflow and case cooling. He has done some seriously extensive testing with heat and airflow and has lots of great threads in the air cooling forum.

You definitely don't want to use all of your top vents as exhaust. You'll be sucking the cool air from the 140s at the front out the top before it even makes it to the videocards.

First things first: Where is the radiator for your cpu and how do you have the fans arranged on that?

Normally, you could remove the 140 exhaust fan from the back of the case as the fan on your cpu heatsink would push the air out there. You don't have that kind of setup though. I would definitely use your two front 140s as intake, use the two 120s on the top that are nearest the front as intake, and block off the back two top vents. Also use whatever fan you can fit into the bottom intake. This should direct all the air out the back of the case and create a positive airflow situation. Remove all the pci/pci express, etc. slot covers to promote airflow out the back. I'm not sure if you have them, but if there are slots for fans to be mounted behind the hard drive bays, that would be great to help push air towards the back as well. As for the rear 140 exhaust, you could test with it there and with it gone. Obviously, you'll need to try several different configs and see what works for you.
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post #15 of 35
Thread Starter 
If you look at the first post I linked I picture of my case with all the fan options visible.
I don´t have a heatsink.
My CPU is watercooled and the radiator is in the lower compartment of the case.

The upper section is for graphics cards alone.

So I have 140mm rear, 140mm in the front and 4x120mm in the top.

How should I arrange them to provide perfect airflow to the Twin Frozr III?

To solve this matter I need a specialst on Twin Frozrs who exactly knows how the cooler works.

From what I have learned the cooler exhausts more hot air into the case than most of the other ones.
So good exhaust conditions aren´t wrong.
But I definately can´t only have a single 140 for intake.

The only other opportunity would be to use the left 2 of the 4x120mm as exhaust and the other right two for intake.
Only problem would be the chance of both negating each other but it seems like there is no other choice.
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post #16 of 35
Quote:
Originally Posted by Deluxe View Post
You're right, because you have a "little devil" case, hot air goes down instead, so go ahead and change your top fans to intake.
Way to be a douche.

Like he said, the problem is having only one intake in the front.

I had similar problem with my 800D, which didn't even have a front intake, but only sort of a bottom one.

What I did was make the back fan, the bottom fan, and the top fan that's was most toward the back as intake, and the other top 2 fans as exhaust. This was to maintain a positive pressure case. All done with low rpm fans btw, 3x 800rpm Scythes on top and stock corsair fans elsewhere (1000rpm?)

What you could do is make the front fan as intake, the front top 2 fans as intake, and the back, and back top 2 fans as exhaust. That'll give you a nice ~even pressure case, assuming same fans.

Bottom chamber should be isolated from the main chasis, so it shouldn't matter. If it's not and works like the 800D, make that an intake from bottom, switch back fan, and top 2 back fans as intake, and make top 2 front fans as exhaust. If that sounds confusing, PM me and I can make an illustration.

Just visualize the airflow and you should be ok
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post #17 of 35
A little devil case and air cooling?!!

This is blasphemy !!! We need a priest to perform an exorcism !!

Sorry, could not resist it. Cool case - I am jealous ! I would like to have one of those for water cooling.
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post #18 of 35
Quote:
Originally Posted by Awaz View Post
A little devil case and air cooling?!!

This is blasphemy !!! We need a priest to perform an exorcism !!

Sorry, could not resist it. Cool case - I am jealous ! I would like to have one of those for water cooling.
post #19 of 35
This is interesting as on MY HAF 932 I have the top fan replaced with 2 120mm Thermalrights. and I have them as Intake fans and my only exhaust fan is a replaced 120mm thermalright fan is in the back. the front side and top fans all are intake..


EDIT: Reason for my logic is shoving alot of cool air into the case and having the powerful 120mmfan in the back exhausting anything that is near it..
Heat rises but If cold air is being blown down the airflow is being caught in the back therefore the beast 120mm fan thermalright makes is pulling all the heat out while putting in tremendous airflow.
Edited by L337Something - 5/20/11 at 10:48am
    
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post #20 of 35
I'd consider a more powerful fan in the front top slot of the case. leaving the second one open, and the two 800 RPM exhausts in the last two spots.

I had a fresh look at the case and my thoughts today.

What is the airflow rating of those fans. Should have asked that. lol
    
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