Journal
FUEL
Volume 89, Issue 5, Pages 1101-1109Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.fuel.2009.11.028
Keywords
Macerals; Ultimate analysis; Proximate analysis; Multi-variate regression analysis (MVRA); Artificial neural network (ANN)
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Coal, a prime source of energy needs in-depth study of its various parameters, such as proximate analysis, ultimate analysis, and its biological constituents (macerals). These properties manage the rank and calorific value of various coal varieties. Determination of the macerals in coal requires sophisticated microscopic instrumentation and expertise, unlike the other two properties mentioned above. In the present paper, an attempt has been made to predict the concentration of macerals of Indian coals using artificial neural network (ANN) by incorporating the proximate and ultimate analysis of coal. To investigate the appropriateness of this approach, the predictions by ANN are also compared with conventional multivariate regression analysis (MVRA). For the prediction of macerals concentration, data sets have been taken from different coalfields of India for training and testing of the network. Network is trained by 149 datasets with 700 epochs, and tested and validated by 18 datasets. It was found that coefficient of determination between measured and predicted macerals by ANN was quite higher as well as mean absolute percentage error was very marginal as compared to MVRA prediction. (C) 2009 Elsevier Ltd. All rights reserved.
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