Like, you do a sort of
pattern, with the lines as cuts. Better yet, make them round and the full height of the channel, like these:Code:_|_|_
_|_|_
| |
http://www.dangerden.com/store/image...?1292448355001
Printable View
Like, you do a sort of
pattern, with the lines as cuts. Better yet, make them round and the full height of the channel, like these:Code:_|_|_
_|_|_
| |
http://www.dangerden.com/store/image...?1292448355001
Having pins in the channels would certainly be interesting. You might have the benefit of both maximum surface area, but also higher pressure because of the fixed channel design, causing the coolant to move through the block more rapidly? Hmm.
Pins in the channel will kill flow. It's a fine line there...
Let me see, I have a simple 3-d diagram here...
a simple pin grid can be created by slitsawing at 90 degree angles. Much more area for less overall effort.
Rounded pins would increase flow. But how substantially?
A fair bit, but simply doing one at a 45 would make diamond-shaped pins. And also be flow direction dependent, but that's neither here nor there
That sketch looks nice. Maybe I should make a double layered block :D
First it goes through the maze, then the water continues down to the next level in the block which is a chamber full of pins. Would look pretty extreme with such a huge chunk off copper on the cpu. Hell, it would probably be enough to cool the cpu passively if I'm not doing anything demanding.
Now that would be interesting.
Konrad, I took the liberty of turning your idea into a working design.
The three holes in the midplate are for heatpipes. Currently 5mm, but could be made larger. 5mm is plenty though, for ammonia or Midel pipes.
Currently, those heatpipes would be great for RAM on video cards, but a revised top and mount and you could get a CPU block that could do chipset or MOSFETS as well.
All images copyleft KayinStorm Customs, Konrad, if you want have fun with the design.
lol, thanx for the copyleft, Kayin. Your design is more complex than what I had in mind; I was thinking more along the lines of simple rectilinear blocks with pipes drilled through them, either parallel (as in your 3-pipe center block) or even staggered like "Olympic rings" ... a number of smaller circular holes would provide greater inner surface area than a large groove.
What is the purpose of your extra geometry and multi-piece assembly? To increase interior surface area?
My first idea would be to concentrate not on the surface area as much as on stimulating turbulence. Smaller diameter holes (say 1/8") tapped out as a screw (wide-diameter low-pitch V-threads) might "swirl" the liquid through it's passage. Alternately, some kind of machined texture could be used on interior planes. Screw machining/boring isn't really my thing, but the boys in the shop can figure it out easily. It can't be too hard to tap solid copper, it's fairly soft and ductile.
Something like this. Though serving as a solid copper waterblock/heatsink instead of as a heatpipe/fansink.
Turbulence only gets you so far, and with heatpipes you have extra places to remove heat from, hence the extra geometry. Also, the plate serves to force the water through the pin grid instead of simply over it, increasing efficiency at the expense of some flow rate.
After machining, ideally the midplate's bottom chamber would be beadblasted for maximum surface area.
I have further work showing a CPU top and midplate, though I really need to refine my work. Let me hack at it another day or so and we could have a real idea.
