SYSTEM AND PROCESS FOR THE THERMOSTABILISATION OF A LOAD TO BE COOLED INSIDE A DIELECTRIC FLUID

Advantages: Hermetic vessel with defined effective volume containing both liquid and vapour phases of a two‑phase primary dielectric fluid, with the liquid phase fully enveloping the load. Closed mass system: Energy transfer without mass transfer; boiling–condensation cycle maintained indefinitely with indirect condensation by a secondary fluid contacting the vessel walls—reduces or avoids primary fluid loss. Control of thermodynamic state (P–T–V): Temperature is set to the boiling point at the chosen pressure; optional volume regulator enables rapid volume changes to stabilise fast‑varying loads. Operational efficiency: The system can operate without additional energy input for both evaporation and, potentially, condensation (when secondary fluid is at lower temperature), and uses the minimum necessary amount of primary fluid due to the hermetic, pressurised vessel. Robust operation & safety: Safety valve, purge valve to remove air (no non‑condensables), anti‑sloshing grid to keep the load wetted, and anti‑tamper switches. Flexible integration: Can operate in any position (even upside‑down) and under motion/acceleration; can be configured as elemental, simple, or composite modules; optionally includes a control subsystem (sensors, actuators, real‑time data, anticipatory control using electrical power consumption). Demonstrated capability: Example maintains a high‑power IGBT (up to ~8 kW dissipation) at a setpoint of ~65 °C using Novec‑7100 as primary fluid within a compact hermetic vessel and water as secondary fluid. Applications Data centers / Cloud / Crypto‑mining / Simulation & VR — thermostabilisation of servers and high‑performance computing. Power electronics in generation/distribution — e.g., thyristors, IGBTs, IGCTs, SCRs, transformers and related components. Transportation — large electric machines in trains and ships; electric vehicles (including batteries). Aerospace / Aeronautics — flying machines requiring very light systems. Sensing & Directed energy — radar, laser, microwave, infrared systems requiring stable temperature. Defense / Mobile command centers — ruggedised cooling under movement/acceleration. Measurement & Instrumentation — systems that must be maintained at constant temperature.