How to Guide Chemical Engineering Students in the Solution of Complex Engineering Problems

Abstract

If we analyse some of the specific skills of Chemical Engineering degree, and it would not be very different in other disciplines of engineering, the verbs design, analyse or simulate stand out above all. In essence, calculating is an intrinsic activity for the engineer and, therefore, for engineering students.How is this activity developed? When we face a real problem we translate it into mathematical language (modelling). We solve the resulting mathematical problem to obtain the mathematical solution (simulation). The analysis of the results allows us to extract information from the real problem. If the interpretation of the results does not fit with the real problem studied, we must rethink the mathematical model obtained, and so on.Teachers often restrict the real problems that students face to simple situations so that the resulting mathematical problem is simple and, if possible, provides an analytical solution. Why should we do this today if we have numerical methods, a big computing power and mathematical software available to our students? Examples of complex mathematical problems arise from analysis and design of heat exchangers, chemical reactors, distillation columns, etc, both in steady and transitory regimes. These mathematical problems can be classified in groups: solving algebraic equations, ordinary differential equations or partial differential equations systems.According to this classification, some teachers of the Chemical Engineering degree at Campus of Alcoy are providing our students with Matlab guide templates to solve these types of mathematical problems, regardless of the subjects in which these problems appear. This action makes it easier for students to face real problems by reducing the mathematical difficulties associated.This paper shows how these Matlab guide templates are and how students use them in different subjects. It allows students to focus on the engineering aspect of the processes, leaving the difficulty of the associated mathematical problem in a second plane. It also makes easy to modify process parameters to quickly see the effect on the main variables of the process (what if? analysis). Consequently, students improve their ability to analyse and interpret the results obtained and their critical thinking skills. And, finally, they know useful computer tools that can be used both academically and professionally.

Education and New Developments 2023 – Volume 1

“…In most problems studied, mass and energy are always involved, as in reactors with chemical reactions. The employment of these balances in a steady state, which is obtained after analyzing the system, results in complex mathematical equations with a high number of both equations and unknown variables (Carbonell Alcaina et al, 2021). In this sense, mathematical software is highly recommended since the manual calculation is time-consuming and can lead to possible miscalculations.…”

Beneficios de la utilización del simulador comercial PROMAX® en combinación con cálculo manual en el análisis de un proceso industrial en el Grado de Ingeniería Química

“…Nuestra experiencia previa en la resolución de problemas de ingeniería química con Matlab (Carbonell, 2021) corrobora que el alumno asimila mejor los contenidos cuando utiliza una herramienta que le facilita los calculos, pero siempre y cuando, esta no se convierta en una caja negra, de las que el alumno no tiene conocimiento, ya que pierde su función docente, o que solo sepa utilizar su interfaz, sin entender el por qué y para qué la utiliza. Por ello, cuando se plantea un problema real con un simulador, el alumno debe saber en todo momento que modelos matemáticos, correlaciones, paquetes termodinámicos está utilizando el simulador y por qué.…”