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Originally Posted by LPorc
Another notion I am kicking around has parallel runs of 1/4 ID copper tubing run back and forth several times in a long narrow rectangular box, open at the bottom, vented at the top with some quiet fans to aid convection. I suppose that's a chimney of sorts, too. The idea was inspired by a Xice passive cooler that used plastic tubing wound around a frame in a convection box to do a barely adequate job for a single CPU. I am thinking it could be built into my desk as a combination backsplash/modesty panel.
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I have always wondered if it would of been possible to improve upon that design by using copper to aid in thermal transfer (mostly because I'm hoping to find more of a narrow/tall design for a external water-cooling unit rather than a short/wide form factor.. Xice initially interested me but then lost out when the performance was sub-par).
A few times that topics similar to this have come up in ProCooling (such as
this topic) , the idea seems to recieve rather poorly with most people citing the large flow resistance of having so much copper tubing outweighing the improvements (compared to the conventional heatercore setup, of course).
Though, there's nothing saying that it shouldn't be done. I'm going to harass a friend that has experience working with copper tubing to see what can be done. With the good low-flow performance of the Swiftech 6000 waterblock has given hope of making such a system work well (maybe not outstanding, but well for a compact and clean setup that won't take up too much space nor generate too much noise).