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Unread 09-19-2002, 06:41 AM   #43
gmat
Thermophile
 
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Join Date: Mar 2001
Location: France
Posts: 1,221
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Avoid extra stages.

Heat transfer efficiency drops at each interface.
Putting a rad in *another* res will only further the tranfer path, add extra layers for heat to go through and thus reduce overall efficiency.
To get short here's a little diagram (heat goes from left to right)
Conventional watercooling, or heatpipe:
Code:
CPU -> WB -> Water -> Rad -> Air
Kryotech / Vapochill / phase change look-a-like:
Code:
CPU -> Evaporator -> Freon or other toxic stuff -> Condenser -> Air
Your proposal:
Code:
CPU -> WB -> Water -> Rad -> Water -> Chiller -> Water -> Rad -> Air
or
Code:
CPU -> WB -> Water -> Rad -> Water -> Chiller -> Heatsink -> Air
I hope you now see why it would not be quite efficient...
Put the 'chiller' on the CPU directly (like in every pelt setup).

Actually there *are* industrial-strength water chillers, but costs are quite high, and these are bulky and noisy units.
Instead of putting the rad in a bucket (which is useless), they work like this:
Code:
CPU -> WB -> Water -> Chiller -> Heatsink -> Air
This solution exists, and is used in the industry. But be aware that you must insulate your *whole* tubing lines...
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