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H. Lowry (1963)
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Abstract In this study, the higher heating values (HHVs) of 26 lignite samples were calculated by using the proximate and elemental analyses data. The proximate analysis results such as volatile materials (VM), fixed carbon (FC) and HHV and the elemental analysis results such as carbon (C), hydrogen (H), oxygen (O), nitrogen (N) and sulfur (S) were determined for 26 lignite samples from different areas of Turkey. The lignite samples have been tested with particle size of 0–0.05 mm. The HHVs of 26 lignite samples obtained from different Turkish sources were determined experimentally and calculated from both ultimate and proximate analyses. HHVs of 26 the lignite samples can be calculated from the Equation based modeling. The HHVs (MJ/kg) of the lignite samples as a function of fixed carbon (FC, wt%) or volatile materials (VM, %) was calculated from the following equations: where the correlation coefficients for Eqs. (1) and (2) were 0.9907 and 0.9862, respectively. The combustion heats calculated from Eqs. (1) and (2) showed mean differences of +3.9% and +0.3%, respectively. The HHVs (MJ/kg) of the lignite samples as a function of C, H, O, N, and S were calculated from the following equation: where the correlation coefficients for Eq. (3) was 0.9891. HHVs calculated from Eq. (3) showed a mean deviation of +0.1.
"Energy Sources, Part A: Recovery, Utilization, and Environmental Effects" – Taylor & Francis
Published: Sep 3, 2008
Keywords: higher heating value; lignite; modeling; proximate analysis
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