Design and operation of an automatic pressure tracking adiabatic calorimeter (APTAC)
- Union Carbide Corp., South Charleston, WV (United States)
Since 1987, Union Carbide has steadily developed a high-quality, low-thermal inertia calorimeter based upon the DIERS bench-scale apparatus concept. The resulting device, known as the APTAC, makes full use of microcomputer-based instrument control and data acquisition. The nature and quality of the data obtained have been routinely critiqued regarding their suitability for kinetic model development, rather than for use with simple empirical design methodologies. The design elements required for accurate and versatile machine operation are noted, and the design rationale for the various components is given. The hardware and software used for computer control and data acquisition are described. To illustrate the benefits of the APTAC design, a range of challenging techniques are documented. In general, commercially available calorimeters do not have the capability of the APTAC to perform experiments requiring low self heat rate detection, reactant injections, vented operation, and gas/solid phase reactions. Illustrative examples of each of these techniques are documented. The flexibility of the design and the operating stability over a wide range of self heat rates are also shown. 10 refs., 19 figs., 1 tab.
- OSTI ID:
- 255376
- Report Number(s):
- CONF-9508216-; TRN: 96:002769-0004
- Resource Relation:
- Conference: International symposium on runaway reactions and pressure relief design, Boston, MA (United States), 2-4 Aug 1995; Other Information: PBD: 1995; Related Information: Is Part Of International symposium on runaway reactions and pressure relief design; Melhem, G.A.; Fisher, H.G. [eds.]; PB: 779 p.
- Country of Publication:
- United States
- Language:
- English
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