抄録
A simple new method of atomization is proposed. A capillary glass tube is used for ozzle to atomize liquid. Water and kerosene are used for the liquid. A heater is set at top part of the glass tube. It was heated by electrical heating of 0.5 - 2.5W. The water is supperheated and boiling by spontaneous nucleation. A high pressure vapor bubble is made in liquid column and grow rapidly. The liquid jets from the glass tube and breakup to fine particles. The water supplies from upper and water flow does not occur by a stop valve. The liquid jets several times per 1 second. The atomization process was observed by a high speed video camera. The liquid jet temperature is predicted by energy conservation equation. One of method for the atomization of a liquid was applied thermal energy. The spray flashing and the thermal jet are in need of pressurized or decompressed device and a control system for heating. The new method for the atomization of a liquid was developed using superheat phenomenon of liquid by heating local area of a capillary glass tube. The supper-heated liquid jet boils in the atomosphere and atomization was observed several times per one second by this method. This research investigated the spray behavior of water and the behavior of a vapor bubble generated by spontaneous nucleation in a capillary glass tube. It is shown that this atomization continues for long time from this experiment.
