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New cooling Idea

post #1 of 3
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I am working on my pilots license and I pursue a carear in aeronatical engineering. I am a big airplane buff. Every pilot knows those darn carborators cause ice build up in the engine. The reason they do this is the air pressure drops due to a venturi as it enters the carborators. This causes a drop is the temperature of the carborators. If there is relatively high humidity the air freezes bad news. This can happen on 90+ F degree days. Temperature drops can be as high as 70+ degree F. So what if you built a small venturi over the processor, the air temperature would significantly drop. The only problem I can think of is what humidity might do. But the temperature in the area may never get low enough to cause freezing because of the CPU temp.

Here is a drawing of my idea: (very bad drawing!!)
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post #2 of 3
I think that the hot air comming up from the procesor will only mix with the one that comes from the fan somewhere in the midle of that what you draw so it wont cool it at all.
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P4 3.02Ghz P4P800 deluxe XP Samsung 171N 
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MicrosofNaturalMultimedia Hiper 480W R-type 5$ case Logitech G5/MExplorer3.0a 
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post #3 of 3
Nope, completly useless. What you are trying to come up with is similar to a device used for chilling using compressed air. The princible works. But even with a steady stream of compressed air going in - and this isn't being supplied from a fan, but actually coming straight from a compressor - they are only suitable for cooling passive loads. Ive seen a wine-cooler using that idea.

In a more practical sense, the venturi has no effect - it works by lowering the pressure of the air as it passes through the narrowing, and thus its temperature. But as soon as it leaves it will return to nominal density and warm again. You could get some slight cooling by putting a heat-exchange coil around the narrow part and hooking it into watercooling. But to get enough capacity to cool a PC you will be needing an array of these things, and a very powerful compressor. Its a take-over-the-house project. You could achieve the same cooling level with more conventional peltiers, and a lot better with phase change. Both cheaper, smaller and quieter.
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CPUMotherboardOSMonitor
XP 2600 (Needs upgrade!) Nforce 7 XP Pro (Linux on server) Three TFTs. Expensive. 
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IBM springy, made 1994! Ebay cheap, but 12cm fan. Huge, monster server-case Logitech trackball. 
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