Quote:
Originally posted by Cathar
2) It's commonly accepted that faster air-flow on a heatsink cools a CPU better (and more specifically - improves heat transfer), so what makes people suddenly think that the story is different when water is used?
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My point exactly. People seem perfectly happy to accept that faster flow rate in a waterblock is a good thing, but are often stubbonly insistent that the situation is not the same in a radiator.
I believe that it could be a case of those in the know misunderstanding how people agree that increased flow affects efficiency in the waterblock.
I get the impression that a lot of people see it that most of the benefit comes from the water in the block being "replaced" by cooler water more quickly, (please forgive the horrible description/simplification!) rather than the effect of the turbulence arising from increaed flow breaking down the barrier layer at the surface/interface.
Using this same logic, there is a misconception that "because the water spent less time in the water block, it must have picked up less heat", therefore, upon entering the radiator, the temperature difference will be lower and the efficiency will suffer.
That and the insistency on considering a single "packet" of water and how this is "treated" by the heat exchanger, rather that the "water flow" as a whole.
It is beginning t dawn on me that I have been babbling, and before this bottle of wine has eevn more of an effect on my, I shall stop.
8-ball