ScholarWorks@중앙대학교

초록

The two-phase closed thermosyphon (TPCT) is a passive device that offers stable and efficient heat transfer without external power. This study presents a volume of fluid (VOF)-based numerical analysis of an L-shaped geothermal TPCT designed for road de-icing. A mass-balance-based phase-change model was developed, in which empirical constants are dynamically updated under mass conservation, and applied to the L-shaped TPCT. Validation against experimental data showed that the proposed model closely reproduced charge ratio stability, wall temperature distribution, and thermal resistance, demonstrating significantly higher accuracy than conventional fixed-coefficient models. These results highlight the potential of the mass-balance approach to improve the predictive reliability of phase-change simulations and to support the optimized design of TPCT systems for de-icing applications.

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