Based on the theory of vacuum flash of water

a flash device is designed for experiment of ice-making under the condition of adsorption. Vacuum preparation of binary ice makes use of the principle of the triple point of water. However

the water flash will inevitably increase the chamber pressure and the pressure will be higher than the triple point (611 Pa). This paper proposes a method using solid adsorbent to maintain the pressure. Based on the initial establishment of a low pressure environment

the flash vapor can be adsorbed by the solid zeolite adsorbent in the closed system. Due to the experimental conditions

only the effect of adsorption modules on the flash is analyzed. At certain preset pressure (400

600

and 800 Pa)

height of liquid film (20-50 mm) and initial temperature (32℃

22℃)

comparative experiments are carried out in the presence or absence of adsorption module. The results show that the flash chamber pressure and temperature of liquid film can be reduced faster with the adsorption. With the adsorption module

vacuum flash of water can be enhanced. With smaller height of liquid film

the flash chamber pressure decreases more quickly at the same initial temperature and preset pressure.