抄録
An experimental study has been performed to investigate the production characteristics of liquid ice as a new phase change material along horizontal cylinders immersed in a cold air stream with spraying droplets of propylene-glycol aqueous solution. The experiments were carried out under a variety of experimental parameters such as wind velocity, air temperature, and droplet mass flow rate. Both single lucite tube and three tubes, on which stainless steel foil of 50µm in thickness was wound, were utilized as icing cylinders. The formation of the ice layer along the cylinders were extensively observed. The weight of the liquid ice produced in the wind tunnel were measured. For the present experiments, it was found that the most suitable condition for producing the liquid ice might be in wind velocity Ua=6 m/s and air temperature =-120°C. In this condition, more than 90% of the sprayed aqueous solution could be collected as the liquid ice in the wind tunnel.
