In order to observe detailed behavior of micro plastic particles under rapid heating, a fundamental investigation is made by introducing two ingenious devices; one is the construction of a plane laminar premixed burner exhibiting extremely excellent two-dimensionality, the other is the construction of a magnifying particle-tracking system composed of a pair of rotating plane mirrors and a fixed high-speed video camera. Taking account of the flow patterns obtained using a PIV/PTV system, a series of heating processes from melting to burning of micro PET particles passing through a laminar flame sheet is optically observed. It is found that the proposed high-speed and magnifying tracking system can realize a wide straight range of particle tracking up to 50 mm and clarify many interesting facts concerning the ignition and burning processes of micro PET particles.
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