Quote from: valkir on June 16, 2015, 01:42:03 AM

You make the water cooing system yourself ?? that really nice.

Thank you, fabricated it from scratch by myself. CNC'ed from 4mm aluminum plates and sandwiched together and has a total width of 7 mm, I want to have 5 mm in total for experiments on the S5 when I get around to designing it.

It was an experimental project for fun with a (actual) farmer I know, we've so far mixed standard house heating with mining.

CAD designs are already done for Avalon 4 and Antminer S5 is next in row, current design goal is have cooling plates running at house circulation pressures. This would put it in the 2-3 bar pressure range and would be heaps of fun to do. A part of the engineering would be dumpload controls that make sure the circulation maintains a set temperature, right now we let the radiators naturally release the heat into the room. This limits thermal emissions to fairly low numbers, I've had to underclock the miners so they don't surpass the thermal emission capacity of the radiators.

Quote from: FabioCarpi on June 16, 2015, 02:11:46 AM

I found it very interesting what you did.
But I do not think to do the same because it is difficult to find specific pieces in my state.
Also, the blade is a little sloppy, in my opinion, because the sink is not in contact with the chips. So the heat must cross the board ...

Achei muito interessante o que você fez.
Mas acho que não pra fazer igual porque é difícil encontrar peças específicas em meus estado.
E também, a blade é um pouco mal feita, na minha opinião, porque o dissipador não fica em contato com os chips. Então o calor tem que atravessar a placa...

The parts are aluminum plates that are easy to get but the hard part was access to a fabrication site, if you are in pinch you can simply get a Chinese CNC rapid developer to fabricate the parts. Provided you have the CAD drawings ready and willing to pay a reasonable fee.

There are heat sinks placed on the chips, they aren't shown in the image. The Avalon 3 design actually transfers most of the thermal energy through the bottom of the PCB board, if you look under the PCB you can see the solder forming a solid thermal conduction block. The Avalon 3 stock cooling reflects this but I would prefer to water cool both sides as well. So far I've had Avalon3 running at around 30-40C, it mostly depends on temperature of the coolant, Avalon 3 can run smoothly at 50C.