Eventos Anais de eventos
ENCIT 2022
19th Brazilian Congress of Thermal Sciences and Engineering
CFD ASSESSMENT OF THE THERMO-HYDRAULIC PERFORMANCE CHARACTERISTICS OF TUBE-FIN HEAT EXCHANGERS
Submission Author:
Christian Hermes , Procurando endereço...
Co-Authors:
Marcio Jose Espindola Demetrio, João Victor Loebens Hinterholz, Luiz Braun, Christian Hermes
Presenter: Marcio Jose Espindola Demetrio
doi://10.26678/ABCM.ENCIT2022.CIT22-0370
Abstract
The present work is aimed at developing a computational method, using CFD techniques, to characterize the thermo-hydraulic performance of fin tube heat exchangers for light commercial refrigeration applications. The objective behind this work is to reduce the number of prototypes and wind tunnel tests, but at the same time be able to obtain through computational simulations the characteristics curves of pressure drop and heat transfer coefficient as a functions of volumetric flow rate, and also the Fanning friction factor (f) and Colburn factor (j) as a function of Reynolds number. The CFD models lead to results with a 20% difference in terms of pressure drop for the experimental test, and an error lower than 5% in the total heat exchange. Also, simplified versions of the model were able to reproduce the results of the full models mainly in those cases where the airflow section is uniform.
Keywords
condenser, evaporator, j-factor, Friction Factor, CFD, tube fin
