Experimental study on supercooled water release supercooled state for generating ice crystals

Abstract

Ice blocking and low single-cycle ice production rate are the two major deficiencies of supercooled water ice making. A lot of research has been done by domestic and foreign scholars on controlling ice blocking. The ice production rate of a single cycle is theoretically proportional to the degree of subcooling. In fact, the subcooling release also affects the ice slurry concentration. To improve the ice slurry concentration, this paper investigates the factors of affecting the degree of subcooling release, including three factors: ultrasonic power, subcooling degree, and the residence time of subcooled water in the ice slurry generator, and experiments with a way to produce high concentration ice slurry. The results showed that the greater the degree of subcooling, the deeper the degree of subcooling release; the ultrasonic power and the residence time of subcooled water in the ice slurry generator had little effect on the degree of subcooling release. The average ice content of the ice slurry reached 30.5% after 8 min of continuous ice production in the experiment.