Very nice temps, congrats!!! :toast:
Printable View
Very nice temps, congrats!!! :toast:
i had some pipe cut and some end caps milled.
http://www.xtremesystems.org/forums/...id=38258&stc=1
http://www.xtremesystems.org/forums/...id=38257&stc=1
It will be a neat oil separator :D Did you use a lathe for making those end caps?
Cool Sep,
tonic i didnt do it, i got someone to make them for me on a lathe.
I only got one for now. might have to think about few more latter for other projects.
Nice end caps, but it would be less expensive if you just used a pipe cap.
this will look cooler
Time to swap and change.
Been testing new evap on single stage and found sweet spot.
Time to switch to cascade now and see how it goes.
Got to love the way oil holds propane hey guys.
From previous tests I have decided to remove the suction line hX and see how it goes running deeper vacuum and a new evap.
I have a new drier for second stage and have moved the second stage Desupaheater to different location to make it smaller.
What do ppl think is the best point to mount an enclosure onto the cpu.
ie mount plate ontop of the enclosure.
or on bottom of enclosure with some machining :confused:
http://www.xtremesystems.org/forums/...id=39354&stc=1
http://www.xtremesystems.org/forums/...id=39355&stc=1
http://www.xtremesystems.org/forums/...id=39356&stc=1
http://www.xtremesystems.org/forums/...id=39357&stc=1
http://www.xtremesystems.org/forums/...id=39358&stc=1
Kayl, what are the dimensions of the PVC reduction ?
regards
the large end of pvc ID is 60mm and the outer is 71mmQuote:
Originally Posted by Marvin
then top section is 34mm inner ID and 43mm outer and is 25mm heigh.
There is enough room to add some sticky back foam if need. Didn’t seem to need it on single stage testing, but extra wouldn’t hurt I guess.
I might mount from the bottom so can add insulation at the top.
i moved the desupaheater again.
found a better spot.
I added the stainless steel braid to the suction line tonight ready for ethylene.
I also piped r290 through pipes on the hx to see what ones im gonna use this time.
at a later date when i get some more pipe ill add a coil SLHX to see if any gains.
before i was cooling before and after the hx with slhx loop.
using SLHX after the hx isnst a good idea, ya end up heating the 1150 liquid line at load.
http://www.xtremesystems.org/forums/...id=39480&stc=1
you can see that quite some knowledge and experience went into that cascade... very nice :toast:
Let's hope it will show some nice temps :D
thanxs jack, yes i have been practicing cascaded alot over this year, i hope that this one stays together once finally finished as a bench cascade.
ok testing enclosure before i finalise the enclosure and get some plates made from stainless steel.
S775 need to mount high so here test run with insulation just placed over
i did a wood plate tonight to test cascade i just couldnt wait :toast:
well final testing of enclose, evap and enclsore should work well when finshed.
i have sent drawing off for stainless steel plate.
I can wait til it comes back. :D
http://www.xtremesystems.org/forums/...id=39949&stc=1
http://www.xtremesystems.org/forums/...id=39948&stc=1
Uhmmm :)
COol Cool COOL :)
Is the stainless steel just bottom plate or total enclosure? :)
nice temps :D
the new evap is looking good aswell :toast:
Just hold down plate, it will be located on top of plastic reducer, sitting flush with the enclosure, there will be a slight groove in top of enclosure where the mount plate will sit. But at a later date I could also do a stainless steel enclosure. But for now the plastic reducer is real easy to machine and can change evap design with ease without any changes to enclosure or mounting plate.Quote:
Originally Posted by jinu117
thanxs jack, I cant wait to finish insulation on secondstage, currently I only had time to finish cascade last nigh, vacumm and charge it quickly, just placed insulation on copper tubes so there are lots of air gaps.Quote:
Originally Posted by Jack
Seems that first stage is removing a lot more heat now than before, (the air leaving the first stage condenser was much warmer, than when I had the cascade loaded at -100c benching priming using a suction line hx on the secondstage cooling the first stage liquid line)
So I need to retune first stage again to get better temps on first stage (currently only -40c as compared to -50c before (with ) noload.
well i had to throw out some furniture today, so quick clean and reshuffle :toast:
i ran out of time but the pc is gonna sit on top of the cascade and mount flat.
http://www.xtremesystems.org/forums/...id=40030&stc=1
http://www.xtremesystems.org/forums/...id=40031&stc=1
http://www.xtremesystems.org/forums/...id=40032&stc=1
Kayl I would be a little leary of your end cap design since they fit inside the tube instead of over and down the outside. As the copper tube is put under pressure it expands slightly,how much depends on the pressure. This over a period of cycles can cause the braze to crack since that flat disc won't expand at the same rate, and the end to shoot out like a bullet. I can't tell you if they will fail or how many cycles it may take but wanted to mention this so your head isn't above those caps if there is a failure. picture the "tube expanding" and the lip you made for the braze "not expanding" since its much thicker flat disc and ridgid. I would use 1 on the bottom since it will be facing the base plate but I would use a standard tube cap for the top. Just some safety concerns Kayl Walt
ps I didn't notice the cap design till today or I would have mentioned it sooner
Any time you join 2 pieces of metal,especially ones that hold high pressure,its not only the strength of the weld you must consider but how one expands and contracts in relation to the other or the weld will fatigue and eventruly fail after a number of cycles.
thanxs walt for future oil seps i will use end caps.
i dont use it that much so i may look at changingg again in few months to dual evap.
ill change it then as i dont want that to happen, it makes sense now ya pointed it out.
I think it would start leaking first before a total failure but you cant be sure, its just some things most don't consider when designing something. just don't hover your head above the sep when under pressure , then the most that could happen is you getting hurt falling of the roof when your up there patching the hole. LOL
hehe diy disasters :DQuote:
Originally Posted by wdrzal
I never thought about that either Walt, glad you pointed it out. I used full caps on the phase sep on my auto so no worries, and the water hx on the chiller is flatcapped but that's just the water part of it.
NIIIIICE temps so far, Kayl :toast:
Looks like the block is running nice for ya, and the system is set up just right for real load testing. You really are a master cascader :clap:
Gray