ECI 33+ (3 Stage Cascade)

[NoL]

Haha thanks.
See that flip is killing me.
Would you resist a 7 euro CPEV if a proper TXV was 40 euro?

[Moc]

Of course! For me that is like buying a car with three wheels... if you drive straight, (perhaps) no problem... but in a bend... crash.

And would you really see the 33€ difference in the total cost? Here costs a brand new cascade with big rotarys (2 stage) around 2000€ for the cosumer... so we don't see the difference.

[NoL]

I paid about $200 a compressor. And I think it will work a bit better then you think. Sure, it isn't as ”sentient” and helpful.
Haha less CPEV arguement, you've already won!!

[Moc]

I wish you the best

[teurorist]

can we trade ?
i send you 2 tev's with 3 ducts
and you send me 2 cpev ?
maybe i need a good one :yeah:

[NoL]

Haha if you'd like I can simply figure out the cost of 2 CPEV's and shipping? But then Moc might yell at you

[NoL]

HX brazed. Time to pressure test.
Picked up some polyurethane sheet today, 1” stuff, not the thickest, but its just to build the box and support the HX while I spray foam. The HX is ending up being a very nice tight box for a 3 stage system. Like two plate HX boxes side by side, except taking up much less room.

[NoL]

Pink time!
Those CPEV's are looking beastley aren't they?

[NoL]

I think I went a bit overboard height wise. Don't need that much! (Yay the cascade just got shorter!) I think I'll shave 2 inches off of her. Having the ”low” HX in the center helps with the insulation of it. Normally -80 to -90C would require 3” of foam.



Need to get cracking on getting that condenser for the first stage, I have a back up, but it's not as pretty or dense. Then I can worry the evaporator.

[NoL]

5 of 6 gauge kits.
2 ft of 1/8” tube on each, after brazing in an inch and a half of 1/4” tube to a tube adapator.
Will find that last bit or just pickup another while I'm at homedepot getting JB Weld for these joints. I don't like teflon tape, it's just not robust enough for me.

[NoL]

Gauge prep! 6 lines made up, two lines for the hot gas bypass solenoid done as well.
JB Weld time, that will take the rest of the night to dry. Then will begin to pressure test components.



Oh also picked up 1/2” steel (smaller stuff) to weld up the cradle for the HX box.

[teurorist]

real nice job

if moc wants to yell he can

pleas write me a pm with price and if possible also with shipping to Germany

[NoL]

I honestly have no idea on shipping, mind figuring out the reverse? Out post office sorta sucks. Maybe try UPS?

[teurorist]

ups is ok

[Moc]

What is the next step?

[NoL]

I'm having an issue with someone on getting my condenser, which is a slight delay. I don't want to take final measurements and begin welding the cage until I have it.
So...
Today I'm cutting down the HX box, and will weld up some 1/2” steel under it in a cradle of sorts as the HX box will be on the top front of the unit (recessed about 3cm for the CPEV valves). This will make the CPEV's dissapear behind the final front, but really in essence the HX box is sitting on the condenser at the front.

Oh and sealing all the gauges and pressure testing.

Damn condenser.

[NoL]

Extra insulation bolstering the HX box, pushed finishing nails through, holds the walls in, and lined all the holes with nice black duct tape. That'll seal it up before I spray it with foam later on.
Now to do some welding work.

[Moc]

Do you use foam with 2 components or the one out of cans?

[NoL]

I have both. Have found that freezing the canned foam for a few hours works best. Comes out at apparently a different density.

[Moc]

Interesting notice! I'll try that next time .

[NoL]

Finally managed to get the condenser I wanted. Seriously, not so easy here.
Over the holidays, Dec 25th to Jan 20th, expect some ice!
Now to get on milling my evaporator.



The condenser currently has a 230VAC/3Phase motor.
What motor size would you suggest in HP since I have to find a 110VAC/1PH motor. I believe it's a 16 inch fan. 400mm.

[SAE]

Wow, nice one. I saw that one on XS, but I did not know it's gonna be used in this beast. Keep up the good work. Anxiously awaiting loaded temps.

[NoL]

Thank you, yes it will most likely appear in this.
I have 2 more

[Patrickclouds]

i´m not shure about motor size, maybe some others have a fiew ideas

hope to see some pics of assembling soon

[Lutl]

it looks like there is a fan motor already mounted
what´s the HP rating of this one?