Estimation of free-swelling index based on coal analysis using multivariable regression and artificial neural network

S. Chehreh Chelgani, James C. Hower, B. Hart

Research output: Contribution to journalArticlepeer-review

34 Scopus citations

Abstract

The effects of proximate, ultimate and elemental analysis for a wide range of American coal samples on Free-swelling Index (FSI) have been investigated by multivariable regression and artificial neural network methods (ANN). The stepwise least square mathematical method shows that variables of ultimate analysis are better predictors than those from proximate analysis. The non linear multivariable regression, correlation coefficients (R2) from ultimate analysis inputs was 0.71, and for proximate analysis input variables was 0.49. With the same input sets, feed-forward artificial neural network (FANN) procedures improved accuracy of predicted FSI with R2 = 0.89, and 0.94 for proximate and ultimate analyses, respectively. The ANN based prediction method, as a first report, shows FSI is a predictable variable, and ANN can be further employed as a reliable and accurate method in the free-swelling index prediction.

Original languageEnglish
Pages (from-to)349-355
Number of pages7
JournalFuel Processing Technology
Volume92
Issue number3
DOIs
StatePublished - Mar 2011

Keywords

  • Artificial neural network
  • Free-swelling index (FSI)
  • Proximate and ultimate analysis
  • Regression

ASJC Scopus subject areas

  • General Chemical Engineering
  • Fuel Technology
  • Energy Engineering and Power Technology

Fingerprint

Dive into the research topics of 'Estimation of free-swelling index based on coal analysis using multivariable regression and artificial neural network'. Together they form a unique fingerprint.

Cite this