Unburned carbon in ash prediction in pulverized coal utility boilers. Analysis and assessment of operation strategies.
The predictive system developed in this Thesis has the same structure as the so-called combustion kinetics models, however, it obtains the fluid and thermal description through CFD simulations. To solve the handicap of the high computational cost needed to run a CFD simulation, a neural network syst...
| Autores: | , |
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| Tipo de documento: | dissertação |
| Estado: | Versão publicada |
| Data de publicação: | 2008 |
| País: | España |
| Recursos: | Universidad de Zaragoza |
| Repositório: | Zaguán. Repositorio Digital de la Universidad de Zaragoza |
| OAI Identifier: | oai:zaguan.unizar.es:3360 |
| Acesso em linha: | http://zaguan.unizar.es/record/3360 |
| Access Level: | Acceso aberto |
| Palavra-chave: | Unburned carbon Coal combustion modelling CFD Neural networks |
| Resumo: | The predictive system developed in this Thesis has the same structure as the so-called combustion kinetics models, however, it obtains the fluid and thermal description through CFD simulations. To solve the handicap of the high computational cost needed to run a CFD simulation, a neural network system is used to reproduce the solutions given by the CFD code. Moreover, a neural network system permits to interpolate in the range of variation used during the training stage, and thus, a predictive system covering the whole operational range of the plant is obtained. |
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