Konferensartikel

Multiphysics Numerical Modeling of a Fin and Tube Heat Exchanger

Shobhana Singh
Department of Energy Technology, Aalborg University, Denmark

Kim Sørensen
Department of Energy Technology, Aalborg University, Denmark

Thomas Condra
Department of Energy Technology, Aalborg University, Denmark

Ladda ner artikelhttp://dx.doi.org/10.3384/ecp15119383

Ingår i: Proceedings of the 56th Conference on Simulation and Modelling (SIMS 56), October, 7-9, 2015, Linköping University, Sweden

Linköping Electronic Conference Proceedings 119:39, s. 383-390

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Publicerad: 2015-11-25

ISBN: 978-91-7685-900-1

ISSN: 1650-3686 (tryckt), 1650-3740 (online)

Abstract

In the present research work, a modeling effort to predict the performance of a liquid-gas type fin and tube heat exchanger design is made. Three dimensional (3D) steady state numerical model is developed using commercial software COMSOL Multiphysics based on finite element method (FEM). For the purposes here, only gas flowing over the fin side is simulated assuming constant inner tube wall temperature. The study couples conjugate heat transfer mechanism with turbulent flow in order to describe the temperature and velocity profile. In addition, performance characteristics of the heat exchanger design in terms of heat transfer and pressure loss are determined by parameters such as overall heat transfer coefficient, Colburn j-factor, flow resistance factor, and efficiency index. The model provides useful insights necessary for optimization of heat exchanger design.

Nyckelord

Fin and tube heat exchanger; turbulent flow; conjugate heat transfer; numerical modeling; COMSOL

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