DIY heatsinks

[BDP]

If you run them hot enough you could use thermocouples to generate a DC voltage.

BDP

[Fenris]

Thermocouples are too inefficient and require too much of a thermal differential to be of any practical use.

I've seen the stacked copper idea before using copper roof flashing. Very effective but required a fan to get air between the fins and the heat required to solder the whole thing together (about 6x6") was...nontrivial. Half an hour with a torch and an insulator was required IIRC.

If you want to DIY your own heat pipe cooler:

Benchtest.Com - Heat Pipe 1
Passive Thermosyphon | Overclockers
CPU Vapor Cooling Thermosyphon | Overclockers

[etoiledusoir]

Originally Posted by Fenris

If you want to DIY your own heat pipe cooler:

Benchtest.Com - Heat Pipe 1
Passive Thermosyphon | Overclockers
CPU Vapor Cooling Thermosyphon | Overclockers

Thanks for the links, very educative. Finally, I think a more efficient solution is to buy some cheap used cpu pipe heat sink and find an elegant way to mount them on the chassis.

[bdbender]

Originally Posted by Fenris

...I've seen the stacked copper idea before using copper roof flashing. Very effective but required a fan to get air between the fins and the heat required to solder the whole thing together (about 6x6") was...nontrivial. Half an hour with a torch and an insulator was required IIRC...

What i liked about the Jungson version of stacked copper is there is no evidence of solder at all. Probably there is a central hole and a long bolt through all. Also, it might scale up to aluminum reasonably well. If the copper squares are 10cm per side, to double surface area only requires something between 14 and 15cm per side. Troels says the amp idles at about 170 watts and barely gets warm to the touch.