Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
COAL-FIRED FURNACE BOILER MODEL: SENSITIVITY ANALYSIS AND RESPONSE SURFACE METHOD ASSESSMENT
Submission Author:
Conrado Ermel , RS , Brazil
Co-Authors:
Conrado Ermel, Paulo Smith Schneider
Presenter: Conrado Ermel
doi://10.26678/ABCM.COBEM2019.COB2019-2408
Abstract
The present work presents a parallel between two evaluation tools: the One Factor at Time (OFaT), and the Response Surface Methodology (RSM) when both are applied to a furnace computational combustion model. The assessed model was based on Hottel’s zonal method which is capable of estimating the gas and surface temperatures in the furnace domain. The OFaT assessment was performed in a gas/oil experimental furnace, while the RSM was applied to a coal-fired furnace boiler. Results from both evaluation methods were compared and showed that the OFaT approach was capable of identifying the model non-linearity as well as the influence level of each input factor alone. Inter-relation between the input factors and its combined influence was only perceived by means of RSM. The method also helped to identify a specific input combination that resulted in model convergence-failure. In addition to highlighting the potential of each analysis method, the present work also revealed a unique input configuration where the model did not work properly, confirming the adequacy of RSM to computational modeling evaluation.
Keywords
Sensitivity analysis, Response Surface Method, Boiler Modeling, Zonal Method, DOE
