Programación y diseño de una interfaz gráfica para la modelación y el dimensionamiento de intercambiadores de calor de tipo coraza y tubos

Abstract

This research shows a technological proposal that aimed to program and design a graphical interface for the modeling and sizing of shell and tube type heat exchangers. The development began with mathematical modeling based on the simplified Bell- Delaware method through thermal and hydraulic analysis, the design of the graphical interface was carried out in the App Designer complement of the Matlab software, in which the programming code was entered from the reading of conditions from a database until the results are obtained. The program allows you to choose between six fluids: water, oil, crude oil, kerosene, seawater and methanol, select the location, whether the passage through the tubes or the shell, the type of exchanger, the shell thickness, the distribution of the tubes, the cut of the baffles, the length, the diameter of the tubes and their thickness. The values obtained are observed in the consequent windows, thermal data, hydraulic data and sizing. In order to evaluate the reliability of the program, it was validated with two cases extracted from the bibliography and to quantify the difference the average error percentage was determined, in the first analysis the results obtained were similar, an average error percentage of maximum 3.86%, while that in the second analysis, when executed with certain variations in the methodology, it generated an error percentage of 5.18%. However, the procedure used in this document raises specifications to determine an adequate sizing, which are oversizing and over design, so for the second case the values were less than the established range 15% and 40% respectively. It is recommended to use the full Bell-Delaware method and add the efficiency analysis to complement the program.