Stuff laid out for phase change

[JimmyDean]

http://www.flamebreather.com/jimmydean/Phasechange/



Nothing is set in stone here. Need to get some input if stuff is mounted right and everything. also that fan blows quite a bit of air, and is the stock fan. cool. im so happy i got a new compressor. 1/3 hp embraco with oil cooler. if stuff looks good to you guys ill mount it all in..

[water_cooler 20]

it looks pretty good but what are u going to build with it

[JimmyDean]

tools?

[water_cooler 20]

for tools to build it u would need a
torch
high temp brazing rod
valcuum pump
gange set
and some gas since your compressor is a R12 compressor i would use R22 or if u have the time u could drain the oil inside and fill it with poe oil which would let u use R404a or R507

[migginz]

Originally posted by water_cooler 20
gange set


I dont think he wants to get stoned :p: just build a phase change system !!! :D

[chilly1]

First you need to clean that thing up. Remove the tapping valves and throw them in the trash, they always leak. Unsolder the pipe on the compressor, and tape the ends up til ready to use, flip the metal you have it on over, straighten the sides and then mount the components with the approxmate spacing you have now.
As to the fan if you are going to use it as a water chiller it is ok if you are going to use it as a direct die system then you will also need a speed control to slow it down..
Which is it going to be water or direct?

[migginz]

:off: Is that you and Liv Tyler ?!?!?!?!??!?!

you lucky lucky man

[afireinside]

Why do you need a fan control for direct die?

[JimmyDean]

Its not me, its one of my friends who went to the premiere of lord of the rings.


anyway, its going to be direct die, i already have the ends crimped up. ive got a torch, propane. i think im gonna go 134a with it now, as thats what was in it before. the oil has probably spoiled, do you guys think? the system was open for some time. thanks for the idea of flipping it over, i would have never thought of that!

[migginz]

oil replacment will be needed, my last atttempt worked for a while but I think it keeled over from me not changing the oil, it did around -30c loaded for 2 weeks and then just make dying noises and stopped working, I unsoldered everything and the oil that came out was quite black.

as for fan control, fan noise and also the fan can work against you.

[JimmyDean]

ok i have everything remounted. just makin sure that the discharge line is the bottom tube with on the group of 2 tubes right?

[Gary Lloyd]

It's the one that discharges when you start the compressor.

First you need to clean that thing up. Remove the tapping valves and throw them in the trash, they always leak.

Well, you may want to keep them for tapping into future systems. They are good for temporary purposes.

Definitely trash that compression coupling. Those do not belong on a refrigeration system... ever.

[JimmyDean]

Ok i have everything mounted now.

In one of the pics it shows the oil intercooler stubs, they are the 2 little black things near the bottom of the compressor. one of the caps is cracked, and i want to get a new one/fix this one before i give this guy some juice. how long should i run it with no refrigerant, for testing? no longer then say, 5 seconds?
http://www.flamebreather.com/jimmydean/Phasechange/1-24-04/

[chilly1]

You need to determine which on is the discharge line and pipe it to the top line on the condenser. The bottom line should be connected to a bullet dryer. The dryer is connected to the cap tube. ect.
The purpose of a fan control is getting the right TD on the condenser... And it will give you a quieter fan...

[JimmyDean]

how would you suggest i determine which is the discharge? i seem to remember the bottom one being hooked to the condenser. anyone know about the oil intercooler stubs?

[Pandrone]

Originally posted by JimmyDean
how would you suggest i determine which is the discharge? i seem to remember the bottom one being hooked to the condenser. anyone know about the oil intercooler stubs?


Start the compressor and put your finger over each one of the tubes, the one that builds up a pressure is the discharge.

[Gary Lloyd]

Ignore the oil cooler stubs. You don't need to do anything with them. Pretend they aren't there.

[JimmyDean]

im afraid i cant do that. does it matter what size piping i use for the discharge line to the in line on the condenser?

[Gary Lloyd]

im afraid i cant do that.

Why not?

does it matter what size piping i use for the discharge line to the in line on the condenser?


No less than 1/4, and no more than 3/8.

[JimmyDean]

i cant ignore they are there. they are there. lol. i have some tubing, but i think its 1/4. ill measure. maybe 1/4 OD, im not sure. my condenser inlet looks like whatever 1/4 fits into. 3/8 maybe

[Gary Lloyd]

Want me to decide for you? Use the 3/8 OD.

[JimmyDean]

i dont have any 3/8, thats what i think condenser inlet is. the piping that i have fits into the condenser inlet.

[Gary Lloyd]

Go to plan "B" then.

[JimmyDean]

Ok i have a pipe to the condenser from the compressor. cool. had to braze the pipe into the compressor a couple times, but i finally got it. first time at brazing :) . figured out i was gettin it wayyyy too hot.

[Professor12]

Looks good so far :) Check your PM.