So closed loop would definitely be out of the question, there needs to be a vent somewhere, possibly in a Waterfall Reservoir with a vent on the top? I just don't like the idea of dumping my entire pc in that, I think its cool but clean up might be difficult. Imagin having to scrub off your computer with soap and water each time you service like with the oil computers...
(yes its possible I washed mother boards and other parts with dish soap and hot water along with a soft makeup brush before, make sure it is bone dry before attempting to apply power of any kind)