EPTT 2020

12th Spring School on Transition and Turbulence

Numerical-experimental evaluation of thermal Performace of fined systems: Study of new geometric arrangements for piniform fins

Submission Author: Ualisson Ferreira da Silva , SC , Brazil
Co-Authors: Igor Silva, Ualisson Ferreira da Silva, Willian Kévin Rauber, Vittor Naspolini Zanatta, Marcus Vinícius Canhoto Alves, Paulo Zdanski
Presenter: Ualisson Ferreira da Silva

doi://10.26678/ABCM.EPTT2020.EPT20-0013

 

Abstract

A hybrid numerical-experimental approach is adopted to obtain the thermal performance of a piniform finned heat exchanger. The methodology used aims to determine the average convective heat transfer coefficient and overall finned surface efficiency. For this, a combination of numerical simulations with wind tunnel experimental data was applied in the finned arrangement. Two arrangements were analyzed, one with fins arranged transversely (In line) to the heaters and the other where the fins have an inclination (Zig-zag) in order to create turbulence and increase the heat exchange transfer. The main results indicate that the arrangement “Zig-zag” achieved a better performance than the "In line" arrangement for a Reynolds number higher than 6.0 10³, for Reynolds lower than 5.5 10³, it’s not possible to compare the result between the two arrangement, due to the results being in the experimental uncertainty.

Keywords

forced convection, Piniform finned heat exchanger, Numerical-experimental analysis, Overall heat transfer coefficient

 

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