Quote:
Originally Posted by pmrid
Hi Brent.
Here's a first-blush response: I'm not yet convinced that the style of external (hot-side) heatsink you're using is optimal. I look at the sexy copper pipes coming out there and ask myself - is this a fast lane or a bottleneck? Would you get more heat into the aluminium fins if there was a direct-metal to ceramic contact as in a conventional TEC design? These copper tubes are seen fairly often with CPU coolers among overclockers and the like but they aren't dealing with the same amount of heat that a peltier can produce. Are they better than a flat-surface contact between the hot side of the peltier and the base of the heatsink. Not wishing to pour any water on the fire but I'd like to be convinced about that.
Peter
|
Peter, the copper tubes are welded to a flat copper plate that is just marginally bigger than the TEC. A bit of Silicon paste and 12 volts and it shifts a lot of watts across. The plate is designed to sit flat on the CPU upper surface with thermal compound to shift the heat. It works.
When I first power it up the radiator assembly gets quite warm as does the ensuing airflow. It reduces as the internal temp drops. On the ZWO the response is extremely quick in the first 5 mins. I can drop about 12* C easily straight away.
I'll post a better pic of the TEC\Plate junction if you want convincing.
BTW: a multicore server CPU puts out a lot more heat than the Peltier. These heatsinks are from big servers.