On Numerical Simulation of a Crossflow Moving Bed Heat Exchanger : an Unified Numerical Method and Applications

Abstract

Fixed and moving granular beds exchangers are often used in industrial applications. In tbe present paper, a general schemes, solving for tbe problem of two phases in a process of crossflow moving bed heat transfer and transport, is done. Modelization of these probleros consist on two transient equations of convectiondiffusion, couples, wbere tbe temperatures of both phases are the variables wbich have to be computed. Sorne numerical schemes implicit and explicit are involved for the resoluti.on using fi.nite elements, A strategy of mesh updati.ng is proposed to improve the numerical solution. Finally: numerical results is shown for a crossflow moving bed heat exchanger (MBHE), which is a suitable equipment to heat recovery.