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radiant cooling: how much output?
liquid cooled cpus are all the rage these days with gamer geeks. i don't know if this would be practiacal but you could parallel a bunch of cpu HX's together and have a radiator outside somewhere.
i once saw someones mod where they ran a pex line off the cpu to a panel rad with a bronze grundfos recirc pump!
google cpu radiator and see whats out there.