Wip : Ss
 

Hi folks,
After my single stage practise unit i thought it was time to make something worthy to use :D With some luck i found a free and useable coolgroup. It had some nice components in it and all they needed was some refurb loving :D

Here are some pics to start with

The victim

Trading old for new

Made proces, paintjob


The compressor is a pretty strong Uniti hermetique CAE9460T.
I wil update this now and then while more has been done

*edit*
A bit more work has been done :D

Overall look without fanhouse


New vibrationpads underneath the compressor, the old ones were really grannystyle


Any comments on the de-superheater coil?
The suction lenght?
I'm going to take 2.4M cappilair

What performance are you aiming at?

I'm happy with any end result :)
better then nothing i assume :D

well ur goal should be beter then the colin unit (still working) -30°C idle.

hehe my prototype reached -32°c, the one with the 1/8HP compressor and supersmall condensor.

This unit wil be complicated, i have a R22-502 compressor, so i'm forced to put an alternative gas on it wich is R417A or if possible to change oil R402a.
And i have no idea how that will work out, my best gas laying around is R410A. But i can't use that one cause it would kill the oil and compressor .

I'm hoping to reach at least -50°c idle :D

Yesterday first test of the system .

Learned allot :D

it seems that evap design is really important , while gassing the system and starting it, temps were dropping very very fast to -40, once the system was filled temps dropped back to a loazy -25°c within secs...i was scratching my head, how could this be possible???

-->evap
I made a custom test evap at work , but it has no canals and the capilair lays next to the suction line, in other words , it goes in and gets sucked away before it even makes change to evaporate lol.

Anyhow, a decent evap wil be made so we can test again.

System was filled with R417A

u can alway's order a pre brazed suction line on the net (incl evap).

now where are those pics ??? :p

yeah i saw those at piotres site and they look nice, but like said its more fun when you see your own creation up and running :)

what pics?:D

off the unit running offcourse :D.

Gimme a few minutes i will take some pics ^^

Can't let the unit run longer then a minut other wise my compressor freezes, to much gass on it and bad evap lol
Made a new simple design going to call it evap 53 :D

make sure u got good hitting space for the gas and u will have a nice evap.
thoughe that disign would work nice, with a 3mm thick base.

You think it would be the best to place the cappillair right in the middle?

nope the longer the gas can stay in the evap the beter, but to long is not good also.

I see yes, evaporator lol the word says enough, gas needs to get the change to evaporate before it get's sucked away.
How is your cascade?

*edit*
could you post what your idea would be as a good evap? tekening ofzo lol ^^

cascade work and is standing right behind me, for evap i would go with maze disign.
see XS maybe they got some things u can check.

how long is the cap tube ?

2.6m

At the moment i'm having a vaccuum pump connected to my system, within an hour or so i can tell how much difference my new test with other evap design will give me :D

I hope i can reach at least -1986°c ^^

thats the year u where born in :D.

New evap = better results like said :D
This weekend when i have the time i'm going to finetune the system , it reaches easy -45°c and still dropping but i need to insulate the suction line and lett of some gas, (compressor freezing)
For now i'm happy :D

My final results will come when i have the time to charge the system with either R410a or R402A, i can expect big improvements with those gasses . I took the R417A cause all other gasses would require new type of oil :)

To make a small compar.

R417a = - 41,8 *C, boiling point
R507 = - 47.2 *C boiling point in 0 bars.
R410a = -48.5 *C boiling point
R402a = - 49.2 *C boiling point

its not the boiling point that counts, its how good the gas will take the load.

if im right not sure R507 is best, then R410a :).

JOOOOOORT where the hell are u :p.

I use it as a reference :)
Who needs Jort when i have a better cooltechnician at house :D

Made a few system changes, smaller desuperheater as in less loops, i added an extra pipe to the suction line, insulated the whole part as well, i've changed the oil so my system now can run either R507 or R410a, it's going to be R410a (no R507a avaible) and now my system is in a vacuum . When it's done i will be charging the system again and have a test :D

someone is calling my name ?

R410 isn't the right coolant, you better use R507 ;) of R290 aka propane. Very cheap and environment friendly.

evap can be made quite easy with copper cap in cap design and a 0,5cm baseplate.

grtz

Is there anyone in Belgium that can have a look at my Phase unit... I'm really suspecting something is going wrong with it...

what do you suspect ?

i no longer have any equipment at all to repair it if needed...

The R410a goes well at the moment , hitting -53°c idle . Still need a dam load tester :/ I wanne see how it succeds or fails :D

R410 is an high pressure coolant, mainly used for airco ;)

It will let your compressor work pritty hard :D

It's a l'uniti hermetique 1/2hp compressor, it must work hard :D

No serious it's the best refrigant i have at the moment, this unit also only counts as an test object. My final unit wil be with R507 :)

Btw i didn't knew you already picked up the dewar long time ago? :D

*edit*
Btw back in those days, how did you declare the cappilair? size and lenght?

It seems to no longer hold high loads... I used to be able to maintain 5.6Ghz easy with the E8600, now it's only 5.2Ghz... same for the S478 CPU's, Unit whistles all the time when the CPU goes under stress... Blind suspects a small leakage in the flex...

Still have a Prom 1 unit here, unused for multiple months now, if you need it Leeghoofd...

I'll use it till it explodes :p dunno what is wrong , I transported it a few times, maybe there's some damage there...

haha yeah :D i called you but you didn't take off your phone ! and your father had to search pritty damn hard :P

Euhm testing ;) and some experience from fellow Phase change builders...

checked the mounting ? can you take some pictures of the unit ?

so i can troubleshoot with you :D

grtz

ah :D yeah i had to hide in case you came for it :D

probably a leak indeed :)

its the maximus unit :).

vapo LS ? with the compressor changed or the tuned one ?

grtz

I'll take some piccies today

Don't mind the dirt and dust, it was like that when I bought it from that guy from Brugges...

yes the LS, think the one with the danfoss compressor ;).
sssttt u i got it that way from antwerp :p.