1 Problem
Air and water cooling both depend on contact surface and pumps or fans. At extreme heat densities, local hotspots still appear and systems stay noisy.
2 Idea
Use two-phase immersion: all components sit in a low-boiling-point dielectric such as Novec. Heat boils the fluid right at the hotspot — enormous cooling efficiency, almost no noise.
3 Solution
A sealed glass tank of dielectric fluid, a water-cooled condenser at the lid, no fans in the fluid. The board is moisture-treated, avoiding parts that dissolve in the solvent.
4 Feasibility
Novec or fluorinert is expensive and evaporates if the tank leaks; it needs a perfectly sealed tank and compatible materials. Now in testing: tracking evaporation rate, steady-state temperature and component longevity over several weeks.
5 Current status
Testing
Stage: Testing
In testing: a 20-litre demo tank has run a full-load CPU and GPU for 72 hours at a stable 55°C; now measuring fluid loss.
