Water Content of Dehydrated Ice Slurry

Abstract

Dehydrated ice slurry produced from sea water is effective in maintaining freshness of marine products, and are therefore expected to be utilized as cooling media during long-distance transport of marine products. Because the temperature history of dehydrated ice slurry during melting strongly depends on the initial water content, detailed knowledge of the water content of dehydrated ice slurry is required. In this study, ice slurry produced from NaCl aqueous solution was dehydrated by gravity, and the water content in the dehydrated ice slurry was measured. The results showed that the water content decreases with increasing the diameter of ice particles and has a unique distribution in the vertical direction. We compared the present results with existing data of water permeation in snow, and then found that dehydration of ice slurry can be elucidated based on the physical model of water permeation in snow, despite the difference in the diameter of ice particles and type of liquid phase between ice slurry and snow.