Browse Publications Technical Papers 2013-32-9116
2013-10-15

Small Kerosene Droplet Evaporation Near Butane Diffusion Flame 2013-32-9116

An experimental study has been conducted at small kerosene droplet behavior near well-defined butane diffusion flame for the critical need on high efficient and cleaner energy technology. High temperature of background gas was generated using butane flame. Microflame from butane can reach the maximum temperature around 1200K at tip of outer glass. Single droplet of kerosene was injected by a small injector tube (30 μm-diameter) in to hot environment. Droplet of kerosene was released by attachment of piezo actuator on wall injector. Once the droplet is exposed to the hot atmosphere of micro flame, the temporal regression of the droplet surface was recorded. Droplet diameter was observed by CCD camera with strobe light flash at 180ns. The images captured in this experiment were analyzed by post-processing software to determine the vaporization of droplet. Temperature of background gas was measured by K-type thermocouple and speed of droplet released from injector was also measured to investigate the effect of relative velocity between droplet and background gas. The result shows that the linear changing point of droplet diameter is started at different droplet temperature and different initial velocity. For further movement to high temperatures environment the vaporization rate of droplet is almost linear with time.

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