THERMAL SCIENCE

International Scientific Journal

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Ekrem Taçgün

,

I. Gökhan Aksoy

A NUMERICAL STUDY FOR SOLID AND SERRATED ANNULAR FINNED TUBE BUNDLES

ABSTRACT
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 ANSYA-FLUENT program and the fin geometries are designed in 3-D 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%.
KEYWORDS
annular finned tube bundles, solid fins, serrated fins
PAPER SUBMITTED: 2021-11-20
PAPER REVISED: 2022-01-04
PAPER ACCEPTED: 2022-01-07
PUBLISHED ONLINE: 2022-02-05
DOI REFERENCE: https://doi.org/10.2298/TSCI211120018T
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2022, VOLUME 26, ISSUE Issue 6, PAGES [4931 - 4944]
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A numerical study for solid and serrated annular finned tube bundles

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