SIMULAÇÃO COMPUTACIONAL 3D DE UM TROCADOR DE CALOR CASCO E TUBO

Abstract

. Heat exchangers are intended to increase heat transfer between fluids, with or without mixture between them, making thermal processes more efficient and reducing energy demand. This study aims to analyze the heat transfer that occurs inside shell-and-tube heat exchangers (recuperators) with baffles, to verify their efficiency through models related to the first law of thermodynamics. For this, the influence of the baffles was analyzed, as elements to direct the flow, expanding time and the area of contact between cold fluid with the hot one, thus allowing an increase in the exchange efficiency. To carry out this study, three-dimensional numerical simulations were performed using the ANSYS ® Fluent software. The turbulence model used was the 𝑘 - 𝜔 𝑆𝑆𝑇 and the energy equation was considered. The main objective of this study is to understand the physical, fluid dynamic and thermal phenomena of the heat exchanger, as well as to evaluate the variables involved.