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Mathematical Modeling Of The Self-heating Behaviour Of Dusts Around A Power Cable

Dong, X. and Yang, Y., 2000. Mathematical Modeling Of The Self-heating Behaviour Of Dusts Around A Power Cable. Fire Safety Science 6: 603-610. doi:10.3801/IAFSS.FSS.6-603


This paper has established mathematical models which describe the steady-state heat transfer in the self-heating process of dusts around a working power cable. The self-heating behavior of the dusts was discussed by the numerical solutions of the established models associated with the tested self-heating parameters. Critical spontaneous igniting conditions for the dusts with and without inner heat sources were compared using typical coal dusts. The results show that the self-heating dusts around the power cable are very easy to ignite spontaneously. The small working power cable acted as a weak inner heat source of the dusts around the cable plays an important role in the self-heating of the dusts. Inversely, the spontaneous ignition of the dusts around the cable may cause a power cable fire.


spontaneous ignition, dust, self heating, mathematical model, critical spontaneous ignition temperature/radius

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