First build single stage (many images)

[makaka]

let's start with a bit of pre history , i got my first Vapochill ls (from ebay ) back in 2005 year or so , it was badly broken after shipping , i took it to repair shop , they fixed a broken pipe and recharged with R404 . After getting home the unit worked but temp were poor and compressor would shut down randomly . then completely refused to start , took it back to repair , they said that the control unit was bad , i ordered a new one , after about a month i got it plugged to the system , and again same issue as before compressor shut down randomly and heating up a lot . i took it back to repair , this time they refused to accept it for repair . since i was a student at the time , i was almost out of cash trying to repair the unit , so i forgot about .
Now 15 y later i found the unit in my garage , so i said what the hell why not to fix it , i spent about 2 week in forums reading about how all this work , went ahead bought all necessary tool and started the repair .

I figured out that the unit still had a leak on it , this caused the compressor to overheat . This little bad boy was danfoss nf5.5clx i was able to start the unit and get it working normally but this S*** was very noisy . so i decided to swap it with a NL11F ( Thanks to Charles Wirth for double checking with me the model) .



The compressor was used it cost about 25$


since i am planing to get load in the 200-300w range , i updated the condenser


about 20$ , according to spec 15c delta T @ 700w

i noticed that the old accumulator has some debris inside that wan't be removed , so i decided to make a new one using an old filter drier .




Also installed 2 king valve to later adjust capillary tube length easily (Thanks to aenigma for idea)


Used remaining copper tube to make a small coil on the compressor outlet . Was really hard doing this by hand , require some huge grip strength .


finally my new SS tube arrived


Silver brazing to cooper

Now putting everything inside the small case





Now finally i am allowed inside the house (wife allowed ) to do remaining work . It was really cold out in the garage there was no heating .

capilary tube install and deep vaccum , i used 3.2m of 1 mm .(so far maybe will tweak later .)





i also used a hair dryer over the compressor and tubing to boil any remaining moisture when pulling vacuum .
system did hold the vacuum for 24h now we can start charging the R507 .



first frost

insulation ,



charging until 6c super heat .

and finally :





now finishing insulation :



testing with p4 945 @ 5.2 ghz 1.6v , according to asus monitoring it is 220w (according to estimation from power meter 260w , and finally according to OuterVision? Power Supply Calculator 254w ) . i have a D820 i will test it later since it should be hotter .




342w is the compressor power usage

high side pressure under load

lowside pressure under load


All those under load (200-250w):
decharge temp : 61c
condensing temp : 36c
HP : 260 psi
ambient temp : 26c
low side pressure : 0.7bar
evaporator temp : -28c
temp 6" from compressor : -14c
compressor temp : 40c (delta fan doing great job )

It was really fun time building the unit , some time it was a pain when i had some micro leak and then cap tube blockage , but with patience and learning everything's is possible .

[lkiller123]

Wow reading through this just gives me flashbacks to the good times. Good ol P4 945. Great work!

[makaka]

lkiller123 Thanks

.

lol , i put a D820 on this board did a 4300 mhz with 1.65v should be even higher wattage than the D945@ 5.2 ghz (1.6v) and one mobo phase burned out , i will try to swap the shot PH9025L and post few more overclock result .

[makaka]

Now my first 6 ghz , it was first try . it can do more but i am more interested on testing the max load capacity of the unit .




Not sure how much power it is , this is a D820 @ 4.4 Ghz with 1.76v (really crappy overclocker) , it should be in the 240-280w range .




Cpu temp @ -13c after 20 min prime 95 load .





Evaporator temp -30c , section line temp (7.2c) sound like i almost reached the max cooling capacity with this capillary tube length .





High side pressure almost 250 psi .

Will get my hand on QX6700 and do some testing , this cpu should reach 300w easily with some overclock .

[mdzcpa]

Nice write up! The old compressed sub ambient days!

[makaka]

Finally got the QX6700





well i can see why this processor is considered one of the hostest cpu , cpu temp already in the positive side but still less than 10c , delta T evaporator to cpu is huge , maybe i have to delid this processor later .
Evaporator temp rock solid so far -33c (6" from compressor temp already +8c), we should be in the 260w+ range (280-300w maybe).


I will post more image later after some more tests

[[XC] Lead Head]

Nice job! Glad to still see some people playing around with single stages!

[aenigma]

Nice job man! Brings back memories of the good old days.

[uRnOdAiSy]

Very nice! I would like to see you throw that on on modern cpu just for kicks. I too have a Vapochill LS (2005) . She died from a leak some years ago. I still keep it. I am not sure who I would even take her to in order to effect repair. She would need some modding like you did. HVAC schools? AC repair? It's really good to see this. I have a LD ss phase cooler and I had good overclocks on my I7-7700k and I7-7900X.

[Don_Dan]

Finally got the QX6700

well i can see why this processor is considered one of the hostest cpu , cpu temp already in the positive side but still less than 10c , delta T evaporator to cpu is huge , maybe i have to delid this processor later .
Evaporator temp rock solid so far -33c (6" from compressor temp already +8c), we should be in the 260w+ range (280-300w maybe).


I will post more image later after some more tests

The QX6700 is a crazy CPU. I had one on LN2 some time ago and it ran incredibly hot. I checked and it was actually five years ago already.
I'm glad to see you're having fun!

[makaka]

Well after few day playing with unit , i ended up with a leak , it was my fault since i decided to not braze the flexible extension line , i like the look of it clean without solder




This was responsible for leak

Now since the wife is not home i can enjoy freedom of brazing in my room



Now i run out of Azote the there was no way to test pressure . since this section is completely isolated from the system due to the two valves i used air and my bike air pump to pressurize this part







and it hold 100 psi fine for about 4-5 hour





now fast cleaning the mess before the wife get home

Very nice! I would like to see you throw that on on modern cpu just for kicks.

i will hook a Sandybridge 2600k to it later , maybe even my main setup a 9900ks (but i am already lazy to disassemble the hole system in order to install the evaporator) .
So far i am playing with old cpus , now i am on the era of socket 478

[iNF3rN0]

This looks like alot of fun! I am curious why capillary tubing is used rather than a TXV. Is it because of cost?

[makaka]

This looks like alot of fun! I am curious why capillary tubing is used rather than a TXV. Is it because of cost?

I was unable to find a txv with correct size for the system .
i was also unable to find a cpev with reasonable price (there was one or 2 in ebay for like 80$+ or so ) , such cpev should cost 20$ or so . it is not a question of money here , it is a question of principle i will not pay for a 20$ device 4x the price .

[Charles Wirth]

I started my build last Tuesday, I need to get some pictures uploaded but wanted to chime in and say its good to see other builds at this time.

[makaka]

i decided to go water cooling and heat exchange plate to condense the r507 , if pressure will be under control i will start adding r410 (r507-80%/r410-20%) this will help with evaporator temp too .
i will start with a 420 radiator (already at home , can add another later )and 20 plate heat exchanger , i comparing few models now , this should improve a lot condensing temperature ,
still not sure to go or not with cpev instead of captube , if anyone can link to some cheap cpev with "regular" price please share or pm.

[Circaflex]

OMG... eztune

[MaddMutt]

If you build it yourself, I can Find many Compressors (Danfoss) but where to find Condensers? What kind of Condenser would I need?
Here is a list of Compressors that I'm looking to buy. They will be 115v 60Hz R404a/R507 and the cooling is listed as (BTU) ASHRAE LBP & LBP*.

SC12CLX.2 -49c LBP(35)LBP*(480)-40c LBP(517){150w}LBP*(898){250w}-30c LBP(1095){320w}LBP*(1420){415w}
SC15CLX.2 -40c LBP(57)LBP*(783)-35c LBP(989){290w}LBP*(1605){450w}-30c LBP(1964){575w}LBP*(2473){700w}
NF7CLX -49c LBP*(457){130w}-40c LBP*(672){200w}-30 LBP*(959){275w}
NF11FX R134a -30 LBP(502){150w}-20 LBP(774){225w}-13 LBP(996){300w}

Thank You For Your Time
In Reading and Replying

[Mythicaltech]

If you build it yourself, I can Find many Compressors (Danfoss) but where to find Condensers? What kind of Condenser would I need?
Here is a list of Compressors that I'm looking to buy. They will be 115v 60Hz R404a/R507 and the cooling is listed as (BTU) ASHRAE LBP & LBP*.

SC12CLX.2 -49c LBP(35)LBP*(480)-40c LBP(517){150w}LBP*(898){250w}-30c LBP(1095){320w}LBP*(1420){415w}
SC15CLX.2 -40c LBP(57)LBP*(783)-35c LBP(989){290w}LBP*(1605){450w}-30c LBP(1964){575w}LBP*(2473){700w}
NF7CLX -49c LBP*(457){130w}-40c LBP*(672){200w}-30 LBP*(959){275w}
NF11FX R134a -30 LBP(502){150w}-20 LBP(774){225w}-13 LBP(996){300w}

Thank You For Your Time
In Reading and Replying

I would go with a rotary compressor unless you are very sensitive to the noise they are much cheaper and stronger. As for condensers I have some for sale if you are in the US.

[MaddMutt]

I'm new on here :-) I've been on OCF for over 5 yrs (MaddMutt) and I'm part of their benching team. I'm also on OCN (10yrs) , HWBot (5yrs) , Warp9 (~2yrs) as MaddMutt. I still need to fill out my the info here so everyone can help. I purchased a SS from BWMBaxter (OCF) on Sept 1 2020. I have found out that it was under powered (-200w Embraco FGS 70HA) and the condenser is small (Mr.Scott). https://www.overclockers.com/forums/...ing-an-SS-Unit
I'm looking to be able to bench : Current i7-8700k, i9-9900kf, i9-9820x, and i9-10940x.
I have found a setup without evap here in the USA (Shipped) with a : - NF11FX $550 - SC12CLX $850. I'm also looking to upgrade my current SS (just have to find someone local to do the Brazing) for better cooling.

Thank You For Your Time

[Mythicaltech]

I'm new on here :-) I've been on OCF for over 5 yrs (MaddMutt) and I'm part of their benching team. I'm also on OCN (10yrs) , HWBot (5yrs) , Warp9 (~2yrs) as MaddMutt. I still need to fill out my the info here so everyone can help. I purchased a SS from BWMBaxter (OCF) on Sept 1 2020. I have found out that it was under powered (-200w Embraco FGS 70HA) and the condenser is small (Mr.Scott). https://www.overclockers.com/forums/...ing-an-SS-Unit
I'm looking to be able to bench : Current i7-8700k, i9-9900kf, i9-9820x, and i9-10940x.
I have found a setup without evap here in the USA (Shipped) with a : - NF11FX $550 - SC12CLX $850. I'm also looking to upgrade my current SS (just have to find someone local to do the Brazing) for better cooling.

Thank You For Your Time

Sent you a PM. Something like an NF11 or SC 12 is way too small for 500-900$

[MaddMutt]

I have my PM setup now :-)

[AlexUphok]

Im certainly no expert but I think you need a bit of fill flash and you missed the focus with the first one. Macro is lots of fun, but quite hard in my experience. What were your settings? You will need to have a reasonably small aperture I believe.