what do you figure the total BTU of heat moved wit hthe system?
what will the temperature be at the CPU chip?
-Christopher
Printable View
what do you figure the total BTU of heat moved wit hthe system?
what will the temperature be at the CPU chip?
-Christopher
Both questions are pretty difficult to answer cause it'll depend on the number of stage(s) running at once, and how high the CPU is overclocked.
Tuning has started.
- 1st stage = HSP @ ~ 10bars & TEV @ -67C
http://img268.imageshack.us/img268/8578/img9085d.jpg
- 2nd stage = HSP @ ~ 10.5bars & modded TEV (R1150) @ -111C
http://img683.imageshack.us/img683/9606/img9086.jpg
- 3rd stage = HSP @ ~ 7bars & CPEV (wide open) @ -112C
http://img51.imageshack.us/img51/8414/img9087.jpg
Just for fun. 1st stage is way too cold this way. :p Anyway, I'm very surprised how well it actually holds to load of the running lower stages even with such a pressure.
With the CPEV opened like this, the 3rd stage pulls down amazingly fast!!
http://img191.imageshack.us/img191/5452/img9081.jpg
Nice Job
You worked some time on it and wasted some amount of money, hope your wife isn't upset :))
kip us posted
Wasted?
Gained a lot of experience and mostly, this cost some money, time and effort.
But I don't see this as a waste at all.
It's certainly not a waste of time nor money for me.
I've tried to mostly used "reused" parts so that the one time investment wasn't too big.
I've played a bit with superheats to get these. (3 stages running)
1st TEV @ -55.2C
http://img13.imageshack.us/img13/5862/img9124m.jpg
2nd TEV @ -101.5C
http://img705.imageshack.us/img705/6638/img9127.jpg
3rd stage CPEV @ -130.7C (crap pic sorry)
http://img697.imageshack.us/img697/8880/img9145.jpg
Bad translation on my part
i men spent (in my lang is the same word like wasted)
And i do agree it's not wasted time or money, but the parts probably weren't for free so it depends on how cheep he got them
and as for the time and effort it's well invested
so .. don't get me wrong you get my respect for it
Edit: and if u say you got mostly reused parts then it's even better
... It has been ages since my last update... looks like I need to finish this beast! :)
I've repaired few small leaks; repaired the second stage TXV and now trying to get it working properly with a mixture of R23 and R1150.
Any idea on how much pressure is usually used by manufacturers in a TXV bulb?
All good. I'm adjusting the first 3 stages by playing with TXVs.
I've removed the 3rd stage CPU evaporator CPEV because it was leaking by the screw, and replaced it by 1.75m of .8mm captube.
Evap out = -129.3C; it looks fairly accurate.
http://img713.imageshack.us/img713/5603/img1261it.jpg
HSP: 1st stage at 10.5 bars, 2nd stage at 5 bars and 3rd stage at 13
Probes gave -50C for the 1st stage TXV and -85C for the 2nd stage TXV.
http://img594.imageshack.us/img594/3878/img1262l.jpg
I don't know why, but 3rd stage evaporator takes a very long time to go down to about -117C and then looses nearly 20C within few seconds.... I'm a bit puzzled.
It makes sense. :) Interestingly, playing with the bulb pressure allows to play with refrigerant charge of the system. For example, it is possible to achieve the same evap temperature with a moderate refrigerant charge but with a high bulb pressure than with more refrigerant in the circuit but with less pressure in the bulb. I've tested this yesterday and I have been able to run a system with less static pressure.
I've removed the 3rd stage CPU evaporator CPEV because it was leaking by the screw, and replaced it by 1.75m of .8mm captube.
Evap out = -129.3C; it looks fairly accurate.
http://img713.imageshack.us/img713/5603/img1261it.jpg
HSP: 1st stage at 10.5 bars, 2nd stage at 5 bars and 3rd stage at 13
Probes gave -50C for the 1st stage TXV and -85C for the 2nd stage TXV.
http://img594.imageshack.us/img594/3878/img1262l.jpg
I didn't know why, but 3rd stage evaporator took a very long time to go down to about -117C and then lost nearly 20C within few seconds.... I was a bit puzzled. So I've tried different captube lengths to finally switch back to a CPEV.
Unfortunately, this new CPEV puts more load on the higher stages. 2nd stage R23 is not enough now. I'm considering doing the following:
- Replacing 1st stage R507 by R410 which would be better to condensate 2nd stage R1150
- Replacing 2nd stage R23 by R1150 which is needed in order to condensate 3rd stage R14