Publication: Diseño bajo norma TEMA de intercambiadores tubo-carcasa
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2014-12
Defense date
2014-12-18
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Abstract
El Proyecto fin de carrera aborda la problemática en el diseño de intercambiadores de
calor tubo-carcasa, al ser un proceso iterativo y muy costoso. Se presenta un medio
alternativo a los software profesionales, para el cálculo de intercambiadores de calor.
La problemática se resuelve mediante la creación de una aplicación en Matlab que
permite la obtención de un área factible, en una gráfica de la pérdida de carga en el
intercambiador, en la que se encuentran todos los intercambiadores que cumplen las
restricciones especificadas. Una vez delimitada el área, se puede calcular el
intercambiador de mínimo coste que cumple las restricciones.
Se describen los componentes principales de los intercambiadores de calor, los
parámetros de diseño y el procedimiento de cálculo.
La resolución del intercambiador se basa en el método de Bell-Delaware, que permite
obtener una mejor solución que el método de Kern, utilizado antiguamente. Consiste en
un proceso iterativo para la obtención de cada uno de los puntos que forman las curvas,
que servirán para delimitar el área factible.
La aplicación de Matlab desarrollada permite obtener las características del
intercambiador de mínimo coste total anualizado que cumple los requisitos
demandados por el usuario y la normativa TEMA, así como realizar análisis de la
influencia de diversos parámetros en el coste.
This Thesis looks into the difficulties of shell and tube heat exchangers design, being this an iterative and hard process. An alternative to professional software is presented for the calculation of heat exchangers. This problem is solved by creating a Matlab application that allows obtaining a feasible region, on a pressure-drop diagram, where all the heat exchangers that meet the specified restrictions are. Once the region is delimited, minimum cost heat exchanger which meets the constraints can be calculated. The main components of heat exchangers, design parameters and calculation procedure are going to be described. The heat exchanger solution is based on the Bell-Delaware method, which allows to get a better solution than the Kern method, which was used in the past. It is an iterative process for obtaining each point that will form the curves which will define the feasible region. The developed Matlab application allows getting the minimum total annualized cost heat exchanger which meets the demanded by user requirements and the TEMA regulations, specifications, so as analyzing the influence on the cost of several parameters.
This Thesis looks into the difficulties of shell and tube heat exchangers design, being this an iterative and hard process. An alternative to professional software is presented for the calculation of heat exchangers. This problem is solved by creating a Matlab application that allows obtaining a feasible region, on a pressure-drop diagram, where all the heat exchangers that meet the specified restrictions are. Once the region is delimited, minimum cost heat exchanger which meets the constraints can be calculated. The main components of heat exchangers, design parameters and calculation procedure are going to be described. The heat exchanger solution is based on the Bell-Delaware method, which allows to get a better solution than the Kern method, which was used in the past. It is an iterative process for obtaining each point that will form the curves which will define the feasible region. The developed Matlab application allows getting the minimum total annualized cost heat exchanger which meets the demanded by user requirements and the TEMA regulations, specifications, so as analyzing the influence on the cost of several parameters.
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Keywords
Transmisión de calor, MATLAB (Programa de aplicación), Método Bell-Delaware, Tubo-carcasa, Normativa TEMA