"Steve Lusardi" wrote:
I wish to use a single large compressor to service 3 cold plates and 3 air
conditioning evaporators, but I am not a refrigeration expert, so if my
thinking is incorrect please let me know. Each one of these (users) will
have their own mechanical temperature controlled evaporator valve. I assume
the compressor should be cycled by head pressure with an overtemp sensor
for safety. I would like to use a salt water cooled condensor on the high
pressure side and a freon gas that changes state around -40 C. Please
advise. Do I need an accumulator of some description on either side? If so,
what? Each one of the users have 3/8" in/out tubes. How do I size the
compressor? Any tips or books on this subject would be welcome.

I'd probably crosspost a request to alt.hvac; those guys are very helpful
when someone who isn't a trained hvac technician asks a question. Be sure
and tell them you are a homowner, and that you have a done a few DIY
projects (like a fence and a water faucet) in the past so they know you
would be capable of the work.

Jon