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gmat · 09-19-2002, 05:41 AM

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...

09-19-2002, 05:41 AM	#43
gmat Thermophile Join Date: Mar 2001 Location: France Posts: 1,221	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...