Good heavens Stickyb, as an old man in the computer industry I see folks using technology at home that 20 years ago was the stuff of the scientists.
Looks like your pal is well on the way to having something like the old Control Data supercomputer that used to be cooled by having the processor core immersed in a liquified inert gas (Freon ??). As the liquid cooled the processor logic it boiled off and was collected at the top for refrigeration and the whole processor core was all kept in a sealed system.
Check next time you see the system - any bottles of gas around it or intense bubbling noises
