Window AC from home depot 5,000 BTU cost $69.00 to $89.00. This is the cheapest way to hit phase cooled temps for under $300.00. To start pull all the out side case off. Then take a look at what you need to seal it as air tight as possible. To make sure only air from the ice box is going back into the AC unit. If any out side warm air gets in it will just ice over. And you will have no air flow.
You will need to insulate the copper lines shown below. Or you will have one big ice cube.
Find a duct that is about the same size as the intake on the AC unit. I used a 6X14X6 with a 6 to 3 reducer (3 to fit an 3 inch drain pipe) Then add weather stripping so the duct and AC unit will have a air tight seal.
Seal all the seams with silicone. Warm air is not your friend.
Put another nice bead of silicone around the edge. Using very small (1/2 inch) sheet metal screws, screw the duct in place. Before you add any screw make sure you have clearance. You don't want to puncture any of the freon lines. Then for extra air protection duct tape all the seams.
Adding top duct, I used 3X10X3 duct and adjusted the sheet metal cap to match the AC out. Then you will need to bend the bottom and side flanges of the duct out to add screws. Make sure to add weather stripping and silicone under the duct. Then add weather stripping to the rest of the AC unit to make the seal is air tight. You will need to make a sheet metal cover, screwed to the top duct and wrapped over the side and back of the AC unit.
Add your 3 inch drain pipe. And give it a test drive. As you can see still needed more insulation.
Add your favorite cooler, I used the largest igloo they had. For two reasons first it was free LOL 2nd it seemed to have the best insulation. Added more spray foam insulation to frozen copper in the picture above. Seal the pipes in the cooler with silicone and wrap all the pipe joints with dust tape.
Insulate the whole unit including the bottom. If not you will ice up and lose most of your cold air moving through the pipes.
Test run filled with fluid.
First design inside the cooler for cooling dual xeons and two 6800 ultra's 70/30 (70% water 30% anti-freeze) mix seems to work the best for cooling and not turning to ice. 50/50 will freeze faster go figure! Remember anti-freeze transfers heat much slower than plain distilled water. More anti-freeze equals higher temps. If you can find it use the anti freeze that will mix with any anti-freeze (light yellow) It seems to have the best heat transfer. Yes it is just starting to ice up.
Video cards got to cold was trying to warm them up. And keep the mix in the igloo from freezing solid. By running the mix thru the plastic bucket.
2nd design just for cooling up to 4 cpu's You will need to seal the top of the cores to the lid. To force all the return air thru the cores. Air in on the right side - return air left side behind the cores.
Non insulated lines in and out for just cpu cooling. Bios temp on the xeons about -18C (probe -27C) Best temp on the X2 4800+ at 225 X12 -15C (probe -26C) Temp at 264X12 3168 mhz -6C (probe -15C) loaded benching 1 to 6C probe -11 to -5C) Bios temps seem to be a little warmer then thermal probes. Thermal probes say about 10 degrees cooler.
Changed insulation hooked up to the computer, with quick connections so I could switch between freezer and igloo. For the freezer go here freezer cooling
