epiphany: we're building /passive cooling systems/ for desktop which /remove heat/ but don't bring cold, at least that don't bring cold /sustainably/: liquid N2 has a carbon footprint which is greater than that of an ac or a refrigeration system.
An ac/heat exchanger which cools the Noble gas, but with /open circulation/ in the circuit boards. Trying to keep pressurized heat exchanger loops with coolant that can damage the motherboard out of the picture.