Hello
I almost finished the cooling system for my friend Szymek and i would like to share with you the way i made my cooling head.
The first thing i made was cutting a piece of wood so it fits very nicelly to a P4/Opteron and drilling holes for the suction line and mounting holes. The piece of wood is 2cm thick and alone is a very good insulator, with a -40C evap touching it the surface is 18C with a 21C ambient, but that isnt enough...
here you can see how well it fits a mounting bracket from a P4
The next thing i did was drilling a hole on the corner opposite to the suction line so the poliurethane foram can be injected there. I dont have any nice pic of it but its vissible here (you can see a cable from a temp. probe going through there)
As you can see the evaporator isnt mounted yet to the mounting piece. The interface material between the evaporator and wood was plastic, 2 pieces of a 8mm OD, 40mm long pipes made from a BIC pen (made prom polyethylene) beacause they were preety flexible. The glue i used was "super glue" (cyanoakrylate glue).
The next thing i did (after the evaporator was glued ) was filling the chamber wich was created between the evaporator and mounting bracket. I used a 8mm hole in the top of the piece of wood for it, but before doing anything i putted the evap head in to some water, sticked the outlet of the can of poliurethane foam to the hole and sprayed some of it between the evaporator and bracket. This way i was sure there were no air gaps. Thanks to the fact the surface of the evaporator and wood were wet the poliurethane created smaller bubbles and was muich harder and stronger.
A moment after i filled the sides of the head with poliurethane foam and let it expand to the sides. As you can see i covered the piece of styrofoam with "food foil" (like you pack your sandwiches with) so it wont stick to the styrofoam.
After the whole assembly dried i decided its time to cut the foam to its shape.
Some pics:
As you can see on the last pic the system was used before taking it, the shape you see is some arctic silver ceramique, a P4 wich was sitting there and some frost (no seal was used)
And now, the final part, the seal. Its made of a 19mm thick piece of neoprene, cutted a lil so its thinner (~13mm):
The back side of the mother board is insulated using a piece of neoprene (19mm thick) attached with a piece of wood.
The head isnt finished yet, it needs some finishing touches but even now it works beautifully. No heaters are used and with a -41C evaporator no cold can be felt. The total thickness is 2-3cm on the sides and 8mm on top + 20mm of wood
I think i will use the same type of insulation in my cascade wich is about to be finished
berkut
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