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Simultaneous heat and mass transfer in transient dovetail metallic porous fin made of aluminium and copper metals: Analysing efficiency and thermal dynamics under dehumidification.

Author(s) : KUMAR P. L. P., GIREESHA B. J., VENKATESH P.

Type of article: IJR article

Summary

The presents study investigates transient thermal analysis of porous dovetail fin made of copper (Cu) and aluminium (Al) under dehumidification condition, where simultaneous heat and mass transfer occurs through surface condensation when the fin temperature drops below the ambient dew point. The flow and transport through the porous structure are modelled using Darcy’s law and the nonlinear governing equations are solved numerically using Finite Difference Method (FDM) with results showing good agreement with existing literature confirming the model’s accuracy and reliability. Results reveal that Cu fin demonstrate superior heat dissipation and efficiency exhibiting a 119.09 % rise in temperature distribution compared with 178.10 % for Al attributed to Cu higher thermal conductivity and enhanced heat diffusion capability. The dovetail configuration yields better thermal performance than the rectangular fin with temperature rises of 178.10 % (Al) and 119.09 % (Cu) owing to its tapered profile that reduces axial thermal resistance and promotes effective condensation. Parametric evaluation reveals that increasing Relative Humidity (RH) by 400 % decreases temperature distribution by 131.58 % in Al and 81.65 % in Cu due to intensified latent heat absorption, while a 200 % variation in taper ratio (C) alters it by 14.50 % and 10.06 %, respectively. These results confirm that Cu dovetail fin achieve higher efficiency and more stable condensation dynamics, offering practical applicability for compact heat exchangers, air-cooling units and dehumidification-based thermal management systems.

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Pages: 17 p.

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  • Original title: Simultaneous heat and mass transfer in transient dovetail metallic porous fin made of aluminium and copper metals: Analysing efficiency and thermal dynamics under dehumidification.
  • Record ID : 30034552
  • Languages: English
  • Subject: Technology
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 182
  • Publication date: 2026/02
  • DOI: http://dx.doi.org/https://doi.org/10.1016/j.ijrefrig.2025.12.011

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