Table 1: Parameters in heat exchange experiment.

ItemsParameters

Volume of the fluid sample750 mL
Inlet water temperature of heat exchanger20°C, 40°C
Sample of fluidSolution without dispersant:
0.5 wt.% and 1.0 wt.% Al2O3/water
Solution with 0.05 wt.% cationic chitosan dispersant:
0.5 wt.% and 1.0 wt.% Al2O3/water
Heating power 60 W, 90 W, 120 W, and 150 W
Flow ratio1 L/min and 2 L/min
Temperature °C