Crazy refrigeration

I would like to take this moment to declare what it is that I do.
I am an experimental refrigeration design application engineer. I own a company that
screws around with refrigeration applications that go against the norm of the
engineering society. They say I have Balls. lol. Yes an outcast. BUT my designs work
and I have them in the field working now. I build machines out of discard parts.
Use refrigerants in ways they say you can not. Control environments in creative
wonderful ways lol I love what I do. So come and ask me things.

Ok Here's one In small refrigerators in restaurants when a compressor fails,
I use window ac compressors as a replacement. It works and I get them free.
Usually the only thing wrong with a discarded AC is a dirty coil or a bad fan motor.
To the wealthy they are disposable. To the poor they are Gold.
Think about what I just said.

Now what refrigerants and how to cross them over and mix them is another subject. So ask and I will teach.