But this point you bring out, is what I am trying to say to you. Do you know why it operates in a vacum?
Do you know why we pull a vacum on a system before charging it with freon?
And technically it doesn't produce cold, you cannot produce cold, you can only remove heat. There is absolute zero, and then everything after that is heat. Cold is a reletive term to describe how you feel in certain tempuratures.
It can operate in a vacum because the brine solution will boil at a lower temperature in a vacum, but you must always have a heat source, that heat source is the cold water coil.
I said nothing about producing cold. I said cold water. I think 42 degree water will count as cold in the decidedly non-tech talk here. This mention of the definition of cold is a red herring to divert attention from the fact that your own trade disproves your "cooling in space' theory.