Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
EVALUATION OF PREDICTION METHODS FOR HEAT TRANSFER AND PRESSURE DROP IN PLAIN FIN AND TUBE EXCHANGERS
Submission Author:
Rubens Coutinho Toledo , SP
Co-Authors:
Rubens Coutinho Toledo, Cristiano Tibiriçá
Presenter: Rubens Coutinho Toledo
doi://10.26678/ABCM.COBEM2019.COB2019-1464
Abstract
This work aims to verify the performance of three Colburn factor and four fanning friction factor correlations for the air side of plain fin-and-tube heat exchangers when calculated for a wide range of experimental data. The database in this work was acquired from open literature with 361 points tojfactor and 186 points toffactor where collar diameter ranges between 5.3 to 10.34mm; longitudinal tube pitch between 11.2 to 22.0mm; transverse tube pitch between 19.5 to 25.4mm; fin pitch between 1.1 to 3.21mm; fin thickness between 0.115 to 0.2mmand number of rows between 1 to 6. The correlations were compared to the referred experimental database in order to evaluate their accuracy. Itis possible to conclude that Colburn correlations predicted the data better than friction factors correlations and the best one presented mean absolute error of 13.3% and 19.5%, respectively
Keywords
Colburn factor, Friction Factor, Compact Heat Exchangers
