A DOUBLE LIQUID STORAGE LOOP HEAT PIPE BASED ON SLIDING SLEEVE REGULATION

To address the limitations of traditional loop heat pipe evaporators-such as uncertain operational performance under different orientation configurations, unreasonable working fluid volume in the reservoir, and thermal leakage issues—this study proposes a novel dual-reservoir loop heat pipe. Featuring an annular nozzle-coupled sleeve design, this innovative configuration enhances heat transfer efficiency during complex gravitational variations. The research investigates how varying gravitational orientations and liquid filling rates affect the heat transfer characteristics of the dual-reservoir loop. Simulation software was employed to evaluate thermal performance across different gravitational conditions and filling rates. Results demonstrate that under 65% working fluid filling rate and 40W thermal load, the phase-change liquid medium is replenished promptly. Continuous evaporation occurs on the capillary core surface without drying out, ensuring stable operation of the loop heat pipe. This design effectively meets the mission's requirements for stable thermal dissipation in complex aerospace environments.