Goliath Triple Cooling System

[AresOlSkool]

Subscribed to see the finished product.

[RADCOM]

And how long will it take to reach the moon? lmao This is a phenomenal cooling effort, I look forward to the rest of the project.

[BigJoe]

Dare For More :d

[Sweeper]

Time for a update on the progress of the project. Everything is going slow, but moving forward. I added a few more covers for the stainless lines and wires in the cooling chamber to clean it up a little. Also, completed the tubing and pressure test for the liquid cooling compressor system. I will start evacuation and charging the compressor system next week. Hope to see low temps soon!

[ArtosDracon]

This build is just beyond over the top, I love it. Makes mine look blind man pissing into the wind to cool himself.

[TorVincent]

This is so totally wicked!
I just have to subscribe to see the finished product!
Great work man!

Vinci

[Polizei]

What kind of TXV is that? I thought they had 3 parts... that bulb that goes on the suction side, the input from the highside, and then output to the evap.

Whats with the tube connecting the TXV to the suction side?

[Sweeper]

What kind of TXV is that? I thought they had 3 parts... that bulb that goes on the suction side, the input from the highside, and then output to the evap.

Whats with the tube connecting the TXV to the suction side?

TXV is a Sporlan with external equalizer. The equalizer line attach to the suction line after the bulb to reflect accurate pressure existing in the suction line.

[Polizei]

TXV is a Sporlan with external equalizer. The equalizer line attach to the suction line after the bulb to reflect accurate pressure existing in the suction line.

Oh. So... how's that work compared to a regular TXV without that suction pressure connection?

[Sweeper]

Oh. So... how's that work compared to a regular TXV without that suction pressure connection?

Its not much difference than internal equalizer, except the only difference I found was the external equalizer is not affected by pressure drop across the evaporator. Thought I would use this type, since it is on a water chiller. I will use internal equalizer TXV on the cooling chamber evaporator.

[Polizei]

Its not much difference than internal equalizer, except the only difference I found was the external equalizer is not affected by pressure drop across the evaporator. Thought I would use this type, since it is on a water chiller. I will use internal equalizer TXV on the cooling chamber evaporator.

Ah, so the refrigerant flow is metered not only by the temperature of the suction, but the pressure of the suction side. Don't see how that would make much difference than the more simple TXV... must've been a bored HVAC/R engineer that designed that...

[Fr3akyPete]

Superb project!
How much money did you spend already to realize this?
Must be a huge amount of ca$h.

[tgags2]

amazing project, keeping subscribed to this beauty for sure!

[-Acid-]

I,ve been reading/ watching this from the start not wanting it to die of like the last huge phase project that died.

but it looks like you one is going to be finished and i must say WOW !!!

Any idea what is going to be Run on that machine yet!!!!

I,m sure some of the bigger players of this forum could use it for shows demo's ect. Maybe even a company !!!!
I have huge respect for anyone doing something like this.

Maybe one day it will be me but untill then keep it coming !!!!

[Sweeper]

Thanks everyone for the compliments and being patient to follow the progress of my project. I know the progress has been slow and there has been times when I felt like giving up. But, I've invested to much time and money to quit now. I still have a lot more to do and will keep everyone up to date as usual.

[cre8chaos]

Even if it takes a couple more years I think this is one project that just has to get finished. You do very clean work Sweeper
Sub'ed

[Sweeper]

Here is a wiring diagram for the components that are used in my liquid cooling system. I though it might be useful for someone that is interested.

[coo-coo-clocker]

What an incredible labor of love! Man, you have got some insane fab skills, creative design intellect, and passion for excellence.

Fugger ought to be looking at this to see if he can run one of those moonshot benchies 24x7 in this box!! 600 FSB!!

The new king of cryo boxes!

[Lone.Wolf]

Absolutely amazing work.

[Sweeper]

Update time again. Well, I've finished charging the system and I've run some test, but I'm not pleased with temps for the liquid loop. I think the system is not tuned correctly and I need advice from the more experienced builders of what might be the problem.

Temps at the inlet of the plate heat exchanger is -32C.


Temps of the liquid will not go lower than 0C.


Pressure when system is running


Pressure when system is off


I just can't figure out why the liquid temps will not go lower. I know insulating would help, but I'm only cooling one gallon of coolant and it doesn't even have a load on the system.

By the way, I'm using R507 refrigerant....does the pressures look correct to you guys?

[DetroitAC]

Looks like it's undercharged to me, or the txv is undersized. You said -32C evap inlet, and I see an uninsulated and sweating suction line where the bulb is attached, so that line is lower than dew point, higher than 0C. Superheat must be between 32C and 52C, in any case way too much!

If the txv is sized correctly for the load, add charge until you get a reasonable superheat in the range of 3C to 10C.

[Nyx]

What Refrigerant are u using R22 or R134a. If it is R22, it looks undercharged as the high side pressure is a little low. I see you dont have a receiver for your TXV. Is the sight glass filled with liquid or do you see a mix.

[Polizei]

He's using R507a. I would say undercharged, but I don't know much about phase.

[n00b 0f l337]

Yep agreed on undercharged, also what sorta load is that pump providing? Insulate up first since your system will see different loads that way, add more refrigerant, and make sure your TXV is sized right.

[n00b 0f l337]

Wait, is your low and high side pressures different when system is off?