What are your room temps if you're interested in such elaborate cooling for such relatively high temps? Unless you have a 90F computer room, plain watercooling might be a better idea.
That said I think for such high temps chilled liquid cooling might be a better idea. Building a direct die system with common refrigerants in that range would be pretty hard i think, at least with your compressor. Heck a 1/12HP might be too big for what you want . . .
Even R134A is going to want to boil well below 0 at the pressures that compressor would likely provide. You could try and compensate by useing too short a cap tube to reduce pressure, but you might end up slogging your compressor and breaking it. Conversely with a chilled liquid setup temps are natuarly higher, and you could draw heat from more then just the CPU.
Any reason you're so set on that temp range? You're going to be insulateing the system regardless of temp range. Its not that hard to insulate it better to avoid condensation.
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