Experiment on different depth of water tank supercooling degree was carried out. The results show that the supercooling degree of the upper water in ice storage tank is higher. In order to reduce the supercooling degree of the water and energy consumption of the chiller

different nucleation additives are tested and it is found that adding nano-copper oxide can reduce the supercooling degree and improve the ice storage efficiency. Appropriate mass fraction of copper oxide nanoparticles is obtained under a certain quality dispersant. When the ice-making temperature is -5℃

0.10% mass fraction copper oxide suspension is at the top. Supercooling degree of water is also associated with the temperature difference of heat transfer medium. The higher the difference in temperature is

the smaller the supercooling degree.