Gray's 2HP Autocascade
- Thread starter Gray Mole
- Start date
Aw shucks, I try to keep in shape but I'm gettin' old lol
Cheers though I might just have to take you up if they don't get their delivery on tuesday. They only get restocks on Tuesdays so it'll be NEXT tuesday if it is, and I just can't wait that long!
I'd have to think about what lengths though, cos you're using .028" aren't you? I know my way 'round .031" but .028" I'd actually have to think about
I already looked at all the used captube I have around, but I'm nervous about using captube after it's been exposed to air for a while, and after the captube 'issues' with the last cascade, I'm happier to wait for some new stuff
Gray
Cheers though I might just have to take you up if they don't get their delivery on tuesday. They only get restocks on Tuesdays so it'll be NEXT tuesday if it is, and I just can't wait that long!
I'd have to think about what lengths though, cos you're using .028" aren't you? I know my way 'round .031" but .028" I'd actually have to think about
I already looked at all the used captube I have around, but I'm nervous about using captube after it's been exposed to air for a while, and after the captube 'issues' with the last cascade, I'm happier to wait for some new stuff
Gray
I do that with the new stuff, but I'm not big on re-using anyways, so it there's any question marks on the captube I just bin it.
If I'm keeping it I'll seal the ends, but...lol it's not really that expensive, just out of bl00dy stock!
I'll call tomorrow and if they're not gonna getit in, I think I'll be PMing and paypalling you
Gray
If I'm keeping it I'll seal the ends, but...lol it's not really that expensive, just out of bl00dy stock!
I'll call tomorrow and if they're not gonna getit in, I think I'll be PMing and paypalling you
Gray
Well I found me a new supplier and they'll have my captube tomorrow.
The suction line is ordered along with the insulation I'll need, and the evap is ready and waiting.
I'm changing the huge discharge accumulator for a smaller line muffler that I'll take some pics of tonight when it's done and installed, but nothing else to report until tomorrow or wednesday when it's finally together and charged.
Although, I did manage to find out that I can get 600mm SS suction lines for a very good price now, though I have to rebraze the ends with adapters for copper, and the price of R23 took a serious drop for when I have to 'reload' down to about £150 or so, instead of the £400 it was with the old supplier, so I'll be able to keep working with it after all which is great
Will hopefully have some good news to report tomorrow if I can make time to get it working and cooling
Gray
The suction line is ordered along with the insulation I'll need, and the evap is ready and waiting.
I'm changing the huge discharge accumulator for a smaller line muffler that I'll take some pics of tonight when it's done and installed, but nothing else to report until tomorrow or wednesday when it's finally together and charged.
Although, I did manage to find out that I can get 600mm SS suction lines for a very good price now, though I have to rebraze the ends with adapters for copper, and the price of R23 took a serious drop for when I have to 'reload' down to about £150 or so, instead of the £400 it was with the old supplier, so I'll be able to keep working with it after all which is great
Will hopefully have some good news to report tomorrow if I can make time to get it working and cooling
Gray
Well I got it together and charged it last night, was running well, but the HX wasn't cooling well enough so the pressures were staying too high and the compressor git the overheat protection lol so I had to wait until this morning to check it. It's running fine now, and ready for some finetune charging.
After I let some of the gas out I got down in pressure, then when I started it this morning I had pretty much instant frost on the heat exchanger, so just a little more R23 (the cold stuff) and it should push the 290 to the HX and really freeze the evap head, and I'll be able to do some load testing.
Pics in a bit of the changes, and the finished 'guts', and some icy pics too.
Gray
After I let some of the gas out I got down in pressure, then when I started it this morning I had pretty much instant frost on the heat exchanger, so just a little more R23 (the cold stuff) and it should push the 290 to the HX and really freeze the evap head, and I'll be able to do some load testing.
Pics in a bit of the changes, and the finished 'guts', and some icy pics too.
Gray
Hey Dumo Not as good as yours
I'm only on R23 though, so it's never going to be as cold, but it works.
I never did figure out what the temporary blockage was though, so I've put it away for now. It works fine when it clears though, and I know how to speed it up, so it's not really a big deal to me. A bit frustrating but that's ok.
It's good fro -75 on my heatload tester though, which is pretty close to FX-55 kind of heatload on full load, so I'm really looking forward to using it. I need to sort out my benching rig still though. The FX-57 is dead, the Redline's died, and the X850 has inoperable cancer so I'm a little behind on what I need. Really though all I need is a working mobo for the bencher and I can at least bench SPi and all that though, so I'm not far off what I can live with. The Venice 3000 is my only spare chip, but it would at least give me something to play with.
I'm about 15 degrees off what PC Ice's cascades are though with the R23, but I'm really hoping to see some ethylene in my future so I can get the temps down a little. We'll see how that works out.
The Autocascade is giving me trouble, but nothing serious. I'm just struggling to get the charge right, and I'm getting a lot of 290 in the Low stage I think, so I'll have to look at why. It's holding the load tester, but all I've got is my cheap and flakey multimeter probing temps while I wait for the order for more probes, and it's saying -35 load on it. If it's way off, and it might be, I won't know until the probes for the Fluke are here. If it's right, or close, then I'll have to look at why so much 290 is getting through that way.
I'm frosting back to the compressor, about an inch from it, and under load it's not moving. I can't seem to frost the whole HX though, only about 2 coils of it. If I shoot for more, I'm nearly filling up the condensor.
I'll be looking at it again today, but should have the probes for the weekend so I can be a lot more accurate in what's going on with it.
I suppose I haven't taken pics yet as I just wanted to get it working better first, but at least it's fully operational and holding load I just need to look at whether I'm really off on the charge, or I need to look at modding the captubes to get the refrigerant to work for me.
Gray
Not as good as yours I'm only on R23 though, so it's never going to be as cold, but it works.
I never did figure out what the temporary blockage was though, so I've put it away for now. It works fine when it clears though, and I know how to speed it up, so it's not really a big deal to me. A bit frustrating but that's ok.
It's good fro -75 on my heatload tester though, which is pretty close to FX-55 kind of heatload on full load, so I'm really looking forward to using it. I need to sort out my benching rig still though. The FX-57 is dead, the Redline's died, and the X850 has inoperable cancer
so I'm a little behind on what I need. Really though all I need is a working mobo for the bencher and I can at least bench SPi and all that though, so I'm not far off what I can live with. The Venice 3000 is my only spare chip, but it would at least give me something to play with.I'm about 15 degrees off what PC Ice's cascades are though with the R23, but I'm really hoping to see some ethylene in my future so I can get the temps down a little. We'll see how that works out.
The Autocascade is giving me trouble, but nothing serious. I'm just struggling to get the charge right, and I'm getting a lot of 290 in the Low stage I think, so I'll have to look at why. It's holding the load tester, but all I've got is my cheap and flakey multimeter probing temps while I wait for the order for more probes, and it's saying -35 load on it. If it's way off, and it might be, I won't know until the probes for the Fluke are here. If it's right, or close, then I'll have to look at why so much 290 is getting through that way.
I'm frosting back to the compressor, about an inch from it, and under load it's not moving. I can't seem to frost the whole HX though, only about 2 coils of it. If I shoot for more, I'm nearly filling up the condensor.
I'll be looking at it again today, but should have the probes for the weekend so I can be a lot more accurate in what's going on with it.
I suppose I haven't taken pics yet as I just wanted to get it working better first, but at least it's fully operational and holding load I just need to look at whether I'm really off on the charge, or I need to look at modding the captubes to get the refrigerant to work for me.
Gray
Just for you Grey the twins I have running at -57 I know not uber special lol but if I could only get some of your r23 may make all the difference well its sat running may get some pics tomorrow ??
We need your pics mate get em up
Oh I also found out they are going to phase out disposable cylenders soon but the good news is 2kg alu containers and I may be able to get r23 in them even isco 89
well its sat running may get some pics tomorrow ?? We need your pics mate get em up
Oh I also found out they are going to phase out disposable cylenders soon but the good news is 2kg alu containers and I may be able to get r23 in them even isco 89
That's good new, Fatty I look forward to your pics.
Is that load or idle temp, and are you on CO2 yet or just 507 on the Low stage? For tiny compressors that's good so far, if that's load temps it's awesome but it's likely idle temps. Still, if you can get the HX to hold load that's the hardest part, and once you master that the rest get's easier.
I did a little more on the Auto last night...
Best temps of -60 idle and -50 load so far, but I'm still getting some 290 in the low stage, when that's sorted it should be better than -60 idle, but the temp probe is awful so I can't say if it's colder than that yet.
Still need to do real insulation on the HX, but wanted to see the frostline and get a probe on before I sealed it up.
Will get more results when that's all done, I hope it's today, but the probes need to get here first.
Cheers
Gray
I look forward to your pics.Is that load or idle temp, and are you on CO2 yet or just 507 on the Low stage? For tiny compressors that's good so far, if that's load temps it's awesome but it's likely idle temps. Still, if you can get the HX to hold load that's the hardest part, and once you master that the rest get's easier.
I did a little more on the Auto last night...
Best temps of -60 idle and -50 load so far, but I'm still getting some 290 in the low stage, when that's sorted it should be better than -60 idle, but the temp probe is awful so I can't say if it's colder than that yet.
Still need to do real insulation on the HX, but wanted to see the frostline and get a probe on before I sealed it up.
Will get more results when that's all done, I hope it's today, but the probes need to get here first.
Cheers
Gray
Unfortunately no probes til monday now 
so no results til then.
Did a quick insulation on the HX so that's sorted too, just need to be able to be accurate with the temps and can get more work done.
89 seems to be pretty popular these days, some ppl are using it as a first stage gas in some applications so you should have good luck as a second, but I don't have a pt chart for it so I don't know what you'll be facing.
23/507 would likely work, as they use the same oil too, but I'd be inclined to try R410 as the low on it. When frozen the pressures would be ok, and with an nbp of -50 or lower, you could tune for a light gpu type of load to close to 0psi and that would mean -50 load temp on gpu. Would be pretty good really.
Tough to say, gasses are hard to choose, though most of the time it chooses up based on what we can get lol
Gray
so no results til then.Did a quick insulation on the HX so that's sorted too, just need to be able to be accurate with the temps and can get more work done.
89 seems to be pretty popular these days, some ppl are using it as a first stage gas in some applications so you should have good luck as a second, but I don't have a pt chart for it so I don't know what you'll be facing.
23/507 would likely work, as they use the same oil too, but I'd be inclined to try R410 as the low on it. When frozen the pressures would be ok, and with an nbp of -50 or lower, you could tune for a light gpu type of load to close to 0psi and that would mean -50 load temp on gpu. Would be pretty good really.
Tough to say, gasses are hard to choose, though most of the time it chooses up based on what we can get lol
Gray
I only got a chance to put the new probes on and do a couple minutes of testing and tweaking but I'm certainly a lot closer to the goal
The probe on that multimeter was a mile out as I'd thought. I rebuilt the gpu freezer for 240v and while I was doing that, the probes came it the post, so I put one on alongside the multimeter's. reading -34 on the meter and -44 on the fluke 8)
So after I put them on the Auto, I was running to pressure for the evap, and I'm around -75 at the moment unloaded.
I couldn't seem to flood the heat exchanger, was runing around 3-4c there, but could hold load at about -63 or so, with the tester that I'm starting to think is running more like 150-160w. That's after trying it out on the gpu freezer and seeing the temps it was pulling.
Anyways, after I charged it so it would actually run the HX properly at around -33 or so (that's R23 entrance or 290 exit) I couldn't seem to hold load at all. Strange, but I may only need a little more R23 and it's set.
Pressures once the HX was flooded were 2-3psi low and 160psi high or so, and the evap reading was around -75c so if I can get the evap to hold with the HX frosting I should be good. Hoping to see -65 or better for load temps once the charging is done, but we'll see anyways.
Was nice to see it hold load, but the pressures were about 7psi low and 200psi high and the HX was about 4c so that was all wrong. With the HX working for me, I should see the pressures stay a lot lower, and the evap a little colder as well.
Pics asap perhaps when my son's gone to bed, but we'll see anyway.
Cheers guys
Gray
The probe on that multimeter was a mile out as I'd thought. I rebuilt the gpu freezer for 240v and while I was doing that, the probes came it the post, so I put one on alongside the multimeter's. reading -34 on the meter and -44 on the fluke 8)
So after I put them on the Auto, I was running to pressure for the evap, and I'm around -75 at the moment unloaded.
I couldn't seem to flood the heat exchanger, was runing around 3-4c there, but could hold load at about -63 or so, with the tester that I'm starting to think is running more like 150-160w. That's after trying it out on the gpu freezer and seeing the temps it was pulling.
Anyways, after I charged it so it would actually run the HX properly at around -33 or so (that's R23 entrance or 290 exit) I couldn't seem to hold load at all. Strange, but I may only need a little more R23 and it's set.
Pressures once the HX was flooded were 2-3psi low and 160psi high or so, and the evap reading was around -75c so if I can get the evap to hold with the HX frosting I should be good. Hoping to see -65 or better for load temps once the charging is done, but we'll see anyways.
Was nice to see it hold load, but the pressures were about 7psi low and 200psi high and the HX was about 4c so that was all wrong. With the HX working for me, I should see the pressures stay a lot lower, and the evap a little colder as well.
Pics asap perhaps when my son's gone to bed, but we'll see anyway.
Cheers guys
Gray
maverik-sg1
New member
name='ExstaZ' said:The pictures are not showing. It would be great if I could be able to see the mighty beast also
They are showing - be patient or adjust your firewall settings my friend, it's well worth a look.
Mav
You guys lol
Just so you know, the Auto is going to undergo some major surgery and it's going to be a pretty massive cascade setup next.
Looks like I'm going to have a pair of GPU heads quite soon if all goes well, and then the setup will be the 2HP compressor as the base stage, and 2 3/4HP rotaries for the second stages.
One will run the CPU on it's own, est load temp of around -80, and the other will run a dual evap GPU setup. Hard to estimate the GPU temps but I'd approximate -50 load on each evap but that may be more or less as it's hard to be sure until it's all said and done.
What I DO know is that compressor's alone shoudl put the weight around 55kg plus all the other bits, so boxed weight could be as high as 70kg or slightly more.
I'll start a new thread for it when I start the project, but it shouldn't be too much longer
Gray
Just so you know, the Auto is going to undergo some major surgery and it's going to be a pretty massive cascade setup next.
Looks like I'm going to have a pair of GPU heads quite soon if all goes well, and then the setup will be the 2HP compressor as the base stage, and 2 3/4HP rotaries for the second stages.
One will run the CPU on it's own, est load temp of around -80, and the other will run a dual evap GPU setup. Hard to estimate the GPU temps but I'd approximate -50 load on each evap but that may be more or less as it's hard to be sure until it's all said and done.
What I DO know is that compressor's alone shoudl put the weight around 55kg plus all the other bits, so boxed weight could be as high as 70kg or slightly more.
I'll start a new thread for it when I start the project, but it shouldn't be too much longer
Gray