Prediction and assessment of fly-up type of fireworks by thermokinetics model
| Autor: | Chen-Rui Cao, Wei-Chun Chen, Chi-Min Shu |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Smoke
Propellant Nuclear engineering Fireworks 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 010406 physical chemistry 0104 chemical sciences law.invention Ignition system Thermokinetics law Heat transfer Thermal Environmental science Physical and Theoretical Chemistry 0210 nano-technology Intensity (heat transfer) |
| Zdroj: | Journal of Thermal Analysis and Calorimetry. 142:927-936 |
| ISSN: | 1588-2926 1388-6150 |
| DOI: | 10.1007/s10973-020-09840-3 |
| Popis: | In consumer fireworks, various functions of chemicals create an energetic reaction with a type of colored light, smoke, heat, and the sound to achieve the pyrotechnic effects. Fireworks mixtures may be highly sensitive to external disturbances such as ignition sources, temperature changes, shocks, friction, and static electricity. Approximately 95% of fireworks are imported from China by ocean shipment, taking 4 days to a week to Taiwan. The prediction and assessment for the nth-order reaction, and thermokinetic parameters from thermal safety model for fireworks and pyrotechnic compositions were investigated. This study showed which reaction intensity of the propellant as water was added. It can be seen from the results that water will affect the thermal hazard of propellant. Moreover, the novel findings indicated that the water increased the thermal hazard of the propellant and consequently increased the risk for launching a degradation. Based on the heat transfer theoretical models, the time to maximum rate and time to conversion limit were extrapolated for consideration and discussion. |
| Databáze: | OpenAIRE |
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