Physical, flow and heat transfer characteristic of ice slurry with sucrose solution and large particle group in circular tube

Since the ice slurry with large particle group lacked physical and thermal-hydraulic characteristics, flow and heat transfer experiments were carried out in circular tube. Four kinds of ice slurries with initial average particle size (ds = 0.35, 0.62, 1.83, 2.36 mm) and mass fraction of 0 <= IPF <= 20 % were investigated in experiment. The physical properties of ice slurry with sucrose solution and large particle group were measured. The results showed that there were special flow patterns in the ice slurry and a change in ds altered the flow pattern of the ice slurry. The pressure drop of ice slurry with small ds was greater than that of ice slurry with large ds under high flow rate. At a flow rate of 0.6-1.4 m3/h and a heat flux of 16.75-83.77 kW/m2, the heat transfer coefficient (h) of the ice slurry (10-20 % IPF) was 1.08-1.40 times that of the carrier liquid. Moreover, when the ds increased from 0.35 mm to 2.36 mm, the h increased by about 20 % at the maximum with IPF = 5 %, but the h decreased by about 6 % at IPF = 20 %.