This was installed in a TJ07 and it worked very well.

The top unit was a chiller. It was never really used and had been taken out and sold long time ago. Running chilled sub zero fluid in a [...]]]> My older SS Phase unit has been having a hard time keeping up with new CPU’s. It really was meant to be run in a 24/7 config but over time I moved away from that and it ended up as a benching unit.

This was installed in a TJ07 and it worked very well.

The top unit was a chiller. It was never really used and had been taken out and sold long time ago. Running chilled sub zero fluid in a 24/7 rig just has to many issues so it was scrapped. The bottom was the unit to cool CPU’s.

Old picture of this sitting next to the main rig. The long suction line snaked around through the back side then into the main rig.

When this was all cleaned up it ran a QX9770 @ 4.8ghz 24/7. It was super nice having all that power at the click of a button

But over time all the extra heat, noise and power usage was just a bit to much so I went back to air cooling for this.

It was used for a long time as a benching unit and this is pretty typical of a setup.

Then another short period back on the main rig which seems to change every few months LOL.

This is the actual CPU SS Phase that Jinu built for me long ago

But for benching this unit was having a hard time keeping up with new CPU’s. If I remember correct it was tuned for 270watts which just wasn’t cutting it anymore.

So I decided to start collecting what I needed to actually build my own.

Manifold

Vacuum pump

I picked up a Copland Condensing Sled pretty cheap on eBay which would be the heart of the unit. The comp was a 220v unit so I could not use that and it will need to be swapped out. It really was an impulse buy and if I had hunted around more I could have found a sled with a 110v comp. Oh well

Next thing I would need is a load tester for tuning so I gathered up what I needed for that and built my own.

This is 2x 200watt heater cores fitted into a block of copper for a max load of 400watts.

It also has a thermal cut off switch at the end to protect it incase I forget to turn it off when finished. I have heard to many stories of people forgetting to turn off the load tester when finished and bench tables catching of fire so I wanted to avoid that if possible

Thanks to Ron @ Under The Ice for all his help with that

This is what I would use to adjust the load.

And here it is being tested. Yeah it worked ! LOL

So the Phase unit I had been using through all this was not doing very well these days. 270watt load and it was dropping it down from –50c unloaded to –3.6c. Not very good

The evap that was used on this unit was rather small, but interesting. I think it did pretty well for normal usage but started to tank when the loads started to get heavy.

I ended up getting a 42mm stepper evap from Piotres. It’s pretty hard to find nice evaps in the US so this baby came all the way from poland. This is it nect to a standard Chilly1 that is used by many because its easy to get and cheap. But I wanted something more so I went with Piotres.

I picked up a tank of R507 and a few other odd’s and end’s and finally decided to get some kind of a start on this.

Instead of buying more and more parts and this beast was becoming a money sink I decided I would mod the phase unit I had which was not much use anymore.

First I removed the 220v comp from the Copland Condensing Sled. Pulled out the old comp and cut off the small condenser and quickly found I will need to drill new mounting holes into the sled to mount the compressor.

The old unit still had usable parts like the long suction line and an accumulator. After looking at the size of the old accumulator I might need to remake this, but I will use it for now and see how it holds up. Accumulators are used to allow liquid refrigerant to pool before it enters the compressor which is not a good thing to happen. This is needed because so we can put a higher charge of refrigerant so the unit can hold higher loads. That’s the idea anyway, some use it and others do not.

Here you can see the size difference between the old evap vs the new one from Piotres. The new one has much more mass to be able to absorb the heat from the CPU.

Many ideas go back and forth about evap design, everything from complex maze designs like these, or simple steppers to hand made ones.

Soddemfx’s dual cap tube stepper design

Cryostar

and others

This what the insides of the one I picked up from Piotres looks like. Pretty simple but it has lots of mass

The next thing that really effects the load handling ability of these units is the Condenser. This is what cools the hot gas that comes from the evap after it has absorbed the heat from the CPU. It must then change state from a gas back to a liquid and then feed back into the evap.

You can see the size difference between the old condenser vs the new one here.

What I have left to get before I can go further is nitrogen purging gas, some copper tube and a few other odd’s & end’s, braze this up and then to tune it.

Thanks for reading so far and I will update this as it progresses

Current AMD 800/700 Series Chipset Motherboards –

It’s Coming Soon !

Here it is again cooling down for use with a 980x last weekend. CPU was a really good chip on Air/Water but had a hard time getting past 6.0ghz on LN2.

Some cold pictures