-40c chiller build

[mythical tech]

Specs

19.4CC lg r22 rotary compressor

2x140mm 100mm two pass condenser

3M of 1.05mm cap tube

3 coil desuperheater coil

sud 111 filter/drier

20 plate brazed plate cross flow heat exchanger 3mpa pressure tested

1 gallon insulated res with 99.95% lab grade ethanol

2x iwaki md30 pumps

 

Expected performance

At 300W it should be able to hold about -40c and will loose about 2c for every 70W over that.

[mythical tech]

1 minute ago, NZgamer said:

Isn't it bad for processors to run too cold?

Not if you have proper insulation. This with allow a 10900k to run at 5.6-5.7ghz daily. 

[Oswin]

1 minute ago, NZgamer said:

Isn't it bad for processors to run too cold?

people do LN2, so i guess under some circumstances, maybe not?

[Moonzy]

man i wanna see how long this setup lasts

 

which will go out first? the compressor under sustained load? the motherboard from condensation?

or will it be the cpu from overvolting

 

dont get me wrong, it's not sarcasm, im genuinely curious (and excited) for interesting projects like this

[mythical tech]

2 minutes ago, Moonzy said:

man i wanna see how long this setup lasts

 

which will go out first? the compressor under sustained load? the motherboard from condensation?

or will it be the cpu from overvolting

 

dont get me wrong, it's not sarcasm, im genuinely curious (and excited) for interesting projects like this

The compressor will be fine. I am using an slhx so compression ratios will be about 8:1-9:1, the guy who is going to be using this is using a cold box purged with co2 and kept at -20c to prevent all condensation, and the cpu will only be run at 1.45V. I have used this same model compressor in many other builds and the only one I have ever had die was in my co2 autocascade that had a compression ratio of 32:1 and it lasted about 100 hours of use

[DildorTheDecent]

2 hours ago, mythical tech said:

At 300W it should be able to hold about -40c and will loose about 2c for every 70W over that.

@Jumper118 How does your phase setup compare?

[mythical tech]

27 minutes ago, DildorTheDecent said:

@Jumper118 How does your phase setup compare?

It looks like it has a spiral evaporator so not a ton of surface area. The unit also looks like it is running in a vacuum which hurts load capacity but if it uses a properly sized cap tube and compressor it should hold 300 at -35c maybe -45c but the limit is the evaporator so it can probably not do much more than 3000w no mater what temperature. Though for lower loads it might be better as it is under charged so it runs at a lower temp. 

[mythical tech]

Tools used for this project

 

Acetylene air torch using T-4, T-6 and T-32 tips depending on the size of joint and fed with a 40 cubic foot acetylene tank. 

 

Pipe bender

Drill swaging set 

15% brazing rod for copper to copper and copper to bronze 

45% brazing rod for copper to steel

5lb of co2 set to 8 psi 

400 psi nitrogen for pressure testing 

 

[SolarNova]

21 hours ago, mythical tech said:

Specs

19.4CC lg r22 rotary compressor

2x140mm 100mm two pass condenser

3M of 1.05mm cap tube

3 coil desuperheater coil

sud 111 filter/drier

20 plate brazed plate cross flow heat exchanger 3mpa pressure tested

1 gallon insulated res with 99.95% lab grade ethanol

2x iwaki md30 pumps

 

Expected performance

At 300W it should be able to hold about -40c and will loose about 2c for every 70W over that.

 

Good job, now insulated the living crap out of it, p

 

Look forward to seeing the final results with the PC build.

 

Out of curiosity how much than cost (parts) you to build ?

[mythical tech]

2 hours ago, SolarNova said:

Good job, now insulated the living crap out of it, p

 

Look forward to seeing the final results with the PC build.

 

Out of curiosity how much than cost (parts) you to build ?

I can not disclose cost as it is for a friend but I can ask if they are willing to let me share. It is not cheap but it is less than some people hard line loops(though with this you still need blocks so it is not something that can be done on a small budget). That being said I have sold some for 500$+ shipping that are just meant for benching and not for daily. They are not as strong but it does not matter for something like firestrike or r15 with a 1 gallon res as it recovers by the time you start the bench again but they would not handle a few hours of gaming as the res would not have enough capacity to keep at those temps so you need a stronger compressor to actually actively cool it. I work in hvac and just do these mostly for myself for benching on hwbot but occasionally I build them for a friend like this one. 

[SolarNova]

1 hour ago, mythical tech said:

I can not disclose cost as it is for a friend but I can ask if they are willing to let me share. It is not cheap but it is less than some people hard line loops(though with this you still need blocks so it is not something that can be done on a small budget). That being said I have sold some for 500$+ shipping that are just meant for benching and not for daily. They are not as strong but it does not matter for something like firestrike or r15 with a 1 gallon res as it recovers by the time you start the bench again but they would not handle a few hours of gaming as the res would not have enough capacity to keep at those temps so you need a stronger compressor to actually actively cool it. I work in hvac and just do these mostly for myself for benching on hwbot but occasionally I build them for a friend like this one. 

 

Ah, well I was only interested in the build cost of the chiller itself not the PC and/or loop.

 

I had at one time planned to build a similar setup, scratch built chiller, -40 to -50c target, consistent use, dry gas case, boutique style aesthetics, etc.

had it all designed and planned, but had to shelve it unfortunately.

 

i expect, what ever the cost, u've been able to build the chiller far cheaper than what it would cost me in the UK, getting the parts isnt exactly easy here.

 

[mythical tech]

2 minutes ago, SolarNova said:

 

Ah, well I was only interested in the build cost of the chiller itself not the PC and/or loop.

 

I had at one time planned to build a similar setup, scratch built chiller, -40 to -50c target, consistent use, dry gas case, boutique style aesthetics, etc.

had it all designed and planned, but had to shelve it unfortunately.

 

i expect, what ever the cost, u've been able to build the chiller far cheaper than what it would cost me in the UK, getting the parts isnt exactly easy here.

 

Cost of parts were 800$ and normally I would charge 20-30% cost of parts on top of it to build it but I did this one for cost of parts. I think after shipping this one was 930$ but a water cooled one is about 120$  less 

[SolarNova]

31 minutes ago, mythical tech said:

Cost of parts were 800$ and normally I would charge 20-30% cost of parts on top of it to build it but I did this one for cost of parts. I think after shipping this one was 930$ but a water cooled one is about 120$  less 

Ah ok, surprising, thought it would be cheaper in the US.

 

Thanks for the info

[mythical tech]

26 minutes ago, SolarNova said:

Ah ok, surprising, thought it would be cheaper in the US.

 

Thanks for the info

I only use brand new parts and high pressure rated stuff. I can build one for 200$ but it is not up to my standards of work.