Measurements of apparent specific heat during the devolatilization of coal
An inverse heat transfer method for the estimation of thermo-physical properties of materials was developed to continuously measure the apparent volumetric specific heat during the heating of coal. The experimental apparatus designed for this purpose was comprised of an Infrared Gold Image Furnace capable of applying controlled heating rate in which a silica tube was inserted containing the coal specimen. Measuring the temperatures at selected positions within the sample and furnace allowed the calculation of heat transfer boundary conditions and subsequently the apparent specific heat of the sample. The apparent specific heat curve for the coal sample examined displayed a complex behavior during the softening and re-solidification period associated with series of endothermic and exothermic reactions. The heats of these reactions were extracted from the calculated enthalpy data allowing estimation of the activation energies for the individual reactions.
- Research Organization:
- Univ. of Newcastle (AU)
- OSTI ID:
- 20082393
- Resource Relation:
- Conference: Sixteenth Annual International Pittsburgh Coal Conference, Pittsburgh, PA (US), 10/11/1999--10/15/1999; Other Information: 1 CD-ROM. Operating systems required: Windows 95/98; Windows 3.X, Macintosh; PBD: 1999; Related Information: In: Sixteenth annual international Pittsburgh Coal Conference: Proceedings, [2000] pages.
- Country of Publication:
- United States
- Language:
- English
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