This study investigated the effect of air pressure on the freezing process of a water droplet on a cold surface. A common belief is that bulk liquid water is incompressible and air pressure does not affect the freezing point of the bulk liquid water over a wide range of pressure. However, our results demonstrated that, for a water droplet on a cold surface, its freezing process started early at lower ambient pressures. Such a phenomenon can be explained by the effects of the evaporative cooling.
The Effects of Ambient Pressure on the Initiation of the Freezing Process for a Water Droplet on a Cold Surface
Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received August 6, 2015; final manuscript received April 6, 2016; published online May 3, 2016. Assoc. Editor: Gennady Ziskind.
Jin, Z., Zhao, Y., Sui, D., and Yang, Z. (May 3, 2016). "The Effects of Ambient Pressure on the Initiation of the Freezing Process for a Water Droplet on a Cold Surface." ASME. J. Heat Transfer. August 2016; 138(8): 084502. https://doi.org/10.1115/1.4033377
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