Diseño y simulación mediante CFD de un intercambiador de calor para el calentamiento del aire interior en un depósito de 3m3 que contiene miel de abeja

Abstract

The following project is aimed at modeling a counterflow heat exchanger to heat the air in a 3 m3 honey bee tank, where a heat transfer is carried out with the R134a refrigerant and the air that flows inside the exchanger, for which information was collected about the refrigerant to be used in this project and particularities of the air at an ambient temperature in the city of Quito, this analysis was first carried out by a numerical method and then verified by a simulation. In the first method, formulas were analyzed with which the efficiency and the appropriate geometry for the design were found, based on initial data of the two fluids with which it was intended to raise the air temperature from 20 to 55 °C, since This temperature was found in articles for heating honey. For the CFD design and simulation, the SolidWorks and ANSYS Fluent software packages were used, respectively. The exchanger consists of a coil inside that has 8 tube steps and a length of 1.39 m, allowing to heat the average temperature of the air to 52.75 °C, it was thus shown that the exchanger reached an efficiency of 95%, validating the calculations of the proposed equations, since the desired temperature was reached, showing that this exchanger model presents reliability in the fluid heating process.