Determination of specific heats of coal powders by differential scanning calorimetry |
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| Authors: | Eva I. Vargha-Butler Michael R. Soulard Hassan A. Hamza A.Wilheln Neumann |
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| Affiliation: | 1. University of Toronto, Department of Mechanical Engineering, 5 King''s College Road, Toronto, Ontario M5S 1.A4, Canada;1. EMR, Western Research Laboratory, CANMET, Edmonton, Alberta, Canada |
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| Abstract: | Specific heats (Cp) of bituminous and subbituminous coals were investigated in the temperature range 300–360K by differential scanning calorimetry (DSC). To establish the validity of the procedure, specific heats of glass beads and graphites in powdered and bulk form were determined. Good agreement was obtained with the values for the specific heats of glass and graphites in the literature, and it was established that the specific heats were not dependent on the degree of diminution of these materials. Specific heats of coal samples were found to depend upon mesh size, temperature, rank, moisture content and whether the coal powder was wet- or dry-screened. However, there were only minor differences in Cp between bituminous and subbituminous coals. |
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| Keywords: | coal specific heat instrumental methods of analysis |
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