Effect of Using Various Longitudinal Fin Number In Finned Channel Heat Exchangers On Heat Flow Characteristics

Abstract

This paper presents the air-side overall heat transfer coefficient and pressure drop characteristics for finned channel with various longitudinal fins number. The computational fluid dynamics analysis with ANSYS Fluent software was applied for the analysis of the heat transfer. Numerical simulation was performed for the different longitudinal fins number of (4, 8 and 12), at air flow speeds of 3 m/s to 7 m/s and validated with available correlations. The numerical simulations results, with respect to the pressure drop and exchanged heat were verified by the correlations available in the literature and compared to the simulation results for plain channel. The results indicated that maximum enhancement in Nusselt numberof 265%, 221% and 153% credited to the finned channel with 12, 8, and 4 fins respectively. Moreover, the increase in fins number led to significant improvement for both Nusselt number and Euler number. The results showed good agreement with the existing correlations with a maximum deviation of 10% and 12% for Nusselt number and Euler number respectively for all case.