The evaporating-freezing process of single pensile water droplet during quick depressurization is studied experimentally. The typical characteristics of the thermal-dynamical behaviors of this process are obtained. Based on the experimental observations, the inuences of non-condensable gases on the process are analyzed and discussed in detail. It is pointed out that the subcooling corresponding to the onset of freezing of the droplet is nearly a constant, and the recalescence temperature is approximatively equal to the vapor-solid equilibrium temperature determined by the partial pressure of vapor at the terminal state. The present results are helpful for predicting correctly the evaporating-freezing processes of liquid droplets in high vacuum environment.
; 赵建福
修改评论