TWO-DIMENSIONAL MODELLING OF HEAT TRANSFER IN THE WALLS OF A PARALLELEPIPED COLD ROOM: THE CASE OF A TRANSPORTABLE CONTAINER

Abstract

The aim of this work is to carry out a numerical analysis of the radiative, conductive and convective transfers in the walls of a 2D cold room in order to determine the temperature variation from outside to inside. The device, powered by photovoltaic solar panels installed above the roof via a refrigeration unit, is adjoined by a technical room. The cold store, including the technical room, measuring 5.10 m × 3.00 m × 2.60 m, rests on concrete blocks some 40 cm above the ground, creating a hollow space. Its main purpose is to reduce rising damp. A program was developed in Matlab software to calculate the global radiation received on each wall, including the roof. Thus, for each month from March to May, we calculated the global flux received by the walls on a typical day of the corresponding month. This report presents the computational simulation model implemented using COMSOL Multiphysics, CFD (Computational Fluids Dynamic) software for thermo-fluid-dynamic simulations. We were able to obtain a maximum temperature of 315 K for the outer face and 280.14 K for the inner face. The results of this numerical analysis are validated with those of the program developed on Matlab