Just my .02:
The phase change is complex subject. Much more than plain wc'ing (I'm referring to the fact that even technically challenged can buy industrial parts and make wc'ed rig in short time, just reading the instructions and following the common sense, not the complexity of making the wc'ed system effective). The phase change is not like that. Too many variables, different mediums (and more dangerous too) to work with.
What I'm trying to say is, there are many of us reading and LEARNING from you guys who know what y're doing. Be sure that if I (or better, when I) decide that I learned enough to
TRY to make the phase change system (not just rip the fridge and try to bend the tubes to fit the smaller case

), I'll post questions and ask for more. But now, I'm learning. And keeping quiet. And I'm sure there's lot's of ppl doing the same.
Pls, dont stop.
Hydrogen18, I'd like to be in your shoes, to actually try to make the phase system. Somebody must be the first, and for us others (future noobs in pchange), to serve as a good (or bad

) example what to do and what not. There's no real reason to give up, on your project, and on us.
Keep on, we're watching!!!
PS, sorry, this is somewhat more than .02, but I sorta got carried away...
PPS, I actually junked two deep freeze boxes a year ago, and didn't even care to have a look of the components...Now I wish I have them back. Think that now I would junk them, but with scalpel...that way I would have them for a long time...
/edit: seems like I just cannot stop,
another reason why I like it here, written, I can read and re-read it as many times as necessary to have it settled in my mind. Ofcourse, I can always go and talk to the 'friendly' HVAC technician, but I cannot know how much he really does know about the thing, and second, I cannot re-read that, and we all know how people act funny when they are in front of the camera

...and I even don't have the video camcorder...and I cannot ask him to be my roommate for a month or two...
Duh, enough, my brain hurts...gotta have some sleep!
Cheers!