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Old 14th January, 2003, 03:37 PM
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Cooling box Plan

This is the basic layout of the box that will sit under my case... What do you guys think?
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Cooling box Plan-cooling-box-to-go-below-pc.jpg  
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Old 14th January, 2003, 05:47 PM
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I know next to nada about water cooling. I think the diagram shows the mains powered 120mm's simply blowing out, or into the cooling "cabinet."

I thought the fans were suposed to ram air through the radiators? I'm just asking..
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Old 14th January, 2003, 06:08 PM
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I wouldn't want to use fans for ramming air through anything!

I think the diagonals are meant to be internal baffling however.
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Old 14th January, 2003, 06:34 PM
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Quote:
Originally posted by cloasters
I know next to nada about water cooling. I think the diagram shows the mains powered 120mm's simply blowing out, or into the cooling "cabinet."

I thought the fans were suposed to ram air through the radiators? I'm just asking..
Ramming air is very inefficaint. You want to draw air through the radiator by creating a lower pressure on one side of the radiator. If you try to push the air it will hit the surface and deflect all over the place. If you try to pull the air through, it will try to come through at every nook and cranny. This will give you more even air flow and better cooling. Also a thicker fan will give you a higher pressure diferential with the same airflow as a thinner fan.

I would forgo the ducting and just seal up the box. Leaving tightly fitted and sealed openings around the radiators and the fans. And be sure to use 38mm thick fans.
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Old 14th January, 2003, 07:44 PM
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Nope, the way a fan works means you get a bigger pressure differencial to ambient on the high pressure side. at most its still less than 1.5PSI but its better than on the low side! The fans are ducted on so air can pass through at all available points, the box will be sealed. I would be using a blower but i cannot source a fairly decent one on the cheap
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Last edited by Random Nonsense; 14th January, 2003 at 07:50 PM.
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Old 14th January, 2003, 09:45 PM
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So you are saying that you are going to have your fans blowing in? If that is your plan I'm sure it will work. But after you have it set up and running stable for a few days run some tourture test and check your temps. Then simply flip your fans over to blow out and check your temps.
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Old 14th January, 2003, 11:15 PM
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I may try it, but probably wont, ive checked over the sciencey bits with kaitain and we both came to the same conclusion.
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Old 15th January, 2003, 12:23 AM
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Quote:
Originally posted by Staz
So you are saying that you are going to have your fans blowing in?
Ever wonder why all those lovely little fans only ever seem to have graphs detailing flowrate vs positive static pressure? That's because they're not designed to operate from a negative static pressure!

Áedán
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Old 15th January, 2003, 12:37 AM
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Quote:
Originally posted by Staz
And be sure to use 38mm thick fans.
They're 22W 120mm fans, spinning at a nominal 2650rpm. They're also 38mm thick.

Unless RN uprates them that is! How about an EBN W4E350-CP06-70? It's only noise rated at 64dB, but manages about 2080cfm. Needs over 120W though.

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Old 15th January, 2003, 03:20 AM
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Well I seached and searched.

I wanted to find something that said that sucking was better than blowing. From my personal experiance working with cooling systems most of them suck. Not only that but on most cars electric fans are set up to suck (the only fans I've seen set up to blow have a mechanical fan sucking). Also every AC unit has the fans exausting out of the top drawing air through the radiator.

All I could find was something that said sucking was slightly more efficiant than pushing, but that the design of shroud was more important than sucking or blowing.

So all I ask is that you try it. At worst it will have to be reversed.
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