Akademik Veri Yönetim Sistemi
Chemical Engineering Journal, cilt.538, 2026 (SCI-Expanded, Scopus)
Radio frequency (RF) heating has been widely employed in chemical and food processing research. However, research on continuous-flow RF treatment (CFRFT) of liquid samples remains limited. This study aims to explore the heating characteristics of liquid samples during continuous-flow using a parallel-plate electrode RF systems with helical tube configurations. Carboxymethylcellulose (CMC) solution, a non-Newtonian fluid, was selected as the liquid model. A multiphysics model for CFRFT of CMC solution in a helical tube was developed using COMSOL Multiphysics software. The simulated data closely matched the experimental data, confirming that the model was reasonable and accurate. Simulated results indicated that the helical tube outperforms both the straight tubes and U-tubes in terms of heating rate and uniformity. Moreover, vertical placement of the helical tube further improved these aspects compared to horizontal placement. Among the structural parameters of the helical tube, the number of helical turns had the least impact on the heating rate. However, in terms of heating uniformity, it significantly improved with an increase in the number of helical turns, whereas it significantly deteriorated with an increase in the inner diameter of the helical tube. The results of this study will provide theoretical support for the system design and process optimization for CFRFT of liquids in the chemical and food sectors.