Open AccessA numerical study for solid and serrated annular finned tube bundles
Author(s) -
Ekrem Taçgün,
İlhan Aksoy
Publication year - 2022
Publication title -
thermal science/thermal science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.339
H-Index - 43
eISSN - 2334-7163
pISSN - 0354-9836
DOI - 10.2298/tsci211120018t
Subject(s) - fin , heat exchanger , materials science , mechanics , reynolds number , tube (container) , micro heat exchanger , flow (mathematics) , heat transfer , annular fin , thermodynamics , mechanical engineering , heat transfer coefficient , plate heat exchanger , composite material , physics , engineering , turbulence
Annular finned tube bundles are commonly used for heat recovery systems. Nowadays, heat recovery systems are important in the energy economy. Cross-flow heat exchangers, one of the heat exchanger types are suitable for waste heat recovery systems. Annular fins are utilized in cross-flow heat exchangers for a long time. In this study, two types of annular fin geometry, namely solid and serrated fins, were studied numerically in the cross-flow heat exchangers. All numerical analyses are performed in Ansys-Fluent program and the fin geometries are designed in three-dimensional geometry. Numerical results obtained for two different geometry fins are validated separately with the literature. It is seen that analysis results are found to be compatible with the literature. In numerical analyses, five different Reynolds Numbers and six different geometric parameters are studied. Effects of these parameters are investigated to determine the flow and thermal performance. According to analysis results, the thermal performance of the serrated annular fin geometry is about 8.2 % higher than the solid fin geometry, while the flow performance decreases by 7.5%.