Hey, moorecomp. Former A&P, eh? Me too! The puddlejumpers I worked on didn't have air cycle machines, but I have heard of them. I'm afraid running a turbo to get the compressed air would rob as much or more power than the AC compressor. I like the 'outside the box' thinking, though.
wagonman, since I live in the mecca of RV manufacturing, you'd think I'd know about camper refridgerators. But I don't. Do you have any links that might explain the... oh! thanks, azraelswrd!
Trik, your dry ice idea violates my requirement #2, but your electrically-driven compressor idea is intriguing. I didn't know Goldwings had AC!