EPTT 2022

13th Spring School on Transition and Turbulence

Experimental Method for Analysis of Pressure Drop in Plate-Finned Heat Exchangers with Different Fin Geometries

Submission Author: Willian Kévin Rauber , SC , Brazil
Co-Authors: Bruno Carneiro Gutierrez, Willian Kévin Rauber, Miguel Vaz Jr., Marcus Vinícius Canhoto Alves, Paulo Zdanski
Presenter: Bruno Carneiro Gutierrez

doi://10.26678/ABCM.EPTT2022.EPT22-0006

 

Abstract

The present work describes a new experimental methodology to evaluate the pressure drop in finned tube heat exchangers. The method splits the total pressure drop caused by the tube matrix and corresponding holding structure, from which the latter is subtracted from the total pressure drop. A plate-finned heat exchanger with and without upstream vortex generators were tested in wind tunnel. Three fin geometries were assessed: smooth fins and fins with diamond perforations with two different plate width. For the case of smooth fins, it was tested vortex generators upstream the tube matrix. The experimental data of pressure drop were compared with numerical results for all fins and for the smooth fins a correlation available in the literature was also used. The results demonstrate that the differences in the angular coefficient in the Pressure Drop by Reynolds Number curves for the numerical and experimental data are very small for the studied Reynolds numbers. The average deviation between numerical and experimental points was approximately 18%, which is an indication of the appropriateness of the proposed experimental methodology and numerical approach used in the simulations.

Keywords

Finned Tube Heat Exchanger, pressure drop, Wind Tunnel, experimental method

 

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