Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
A FIRST APPROACH TO MODELLING A STEAM GENERATOR BASED ON HEAT EXCHANGERS NETWORK METHOD
Submission Author:
Augusto Delavald Marques , RS , Brazil
Co-Authors:
Augusto Delavald Marques, Caroline Mével, Paulo Smith Schneider, Jéssica Duarte, Guilherme Barth Rossi
Presenter: Augusto Delavald Marques
doi://10.26678/ABCM.COBEM2019.COB2019-0090
Abstract
This paper presents a simulation of a real steam generator from a coal-fired power plant using a network of heat exchangers. The proposed approach is a combination of the Heat Exchanger Network method with the least squares method to represent the overall heat transfer coefficient as a linear function, which depends only of the flue gas flow, aiming to calculate the temperatures in between the heat exchangers in different operations situations. The data base used is a heat and mass balance provided by the partner enterprise. Steady state and one dimensional flow were considered. The result obtained by the Heat Exchanger Network method was limited by the approximation quality of the overall heat transfer coefficient and the heat transfer area product, obtaining a relative error in the order of 5% for most values and reaching an error of 18% in the worst case
Keywords
lumped model, heat exchanger network, Steam Generator modelling
