I'm actually VERY interested in how this works out as a product, particularly loop sealing and pressure-relief requirements. Though not as a product to purchase as such.
On the back-burner for a while now has been a design for a ruggedised 'deck' for portable VR use, one of the key features of which would have been the entire core operating parts of the system (CPU, GPU, mobo, PSU) being folded together and sealed in a tank of Fluorinert or Novec, (or another perflurocarbon mix). A 'flip-up' radiator would provide whole-system cooling as well as act as a mount for the optical tracking system. Integrated into the shell would be a waterproof keyboard (with cover that flips up with a monitor in the keyboard lid, if I can track down the hardware to drive one of the ultrawide laptop panels from a U845W or Vaio P series directly). As long as the heat sinking capacity of the radiator were not exceeded, all components would be held down to the phase-change temperature of the cooling fluid, with the entire system being effectively waterproof and dustproof.
The main holdups are:
- Determining the quantity of fluid needed (as little as possible from a cost and weight standpoint, but too little means the system can 'run dry' in warm environments, tilted environments, or just if the radiator cooling is insufficient)
- Determining what CoTS radiators, if any, could cool a vapourised perflurocarbon effectively. This is the interesting part of the Raijintec solution, it looks like just a regular WC radiator may be sufficient, though they did not demonstrate it with a CPU.
- Cable egress sealing for the main tank.
- Determine lifetime effectiveness of perflurocarbons in operation. Fluid loss from leaks, attacks on substances in the loop (should be EXTREMELY benign in theory), moisture ingress, gas flow paths inside the sealed chamber, rotating plumbing for the flip-up radiator to avoid gas traps, etc).
Experimenting on these means having plenty of coolant to hand, and that stuff is prohibitively expensive for a project that will never be able to pay for itself. £300/L is the sort of typical pricing, and it evaporates at an ASTONISHING rate. Nearly twice the density of water, but vanishes faster than pure alcohol if left unsealed!