Heat transfer coefficients are dependent on a number of other factors, including solution velocity, viscosity, and temperature (4).A high juice velocity can enhance heat transfer and retard scale formation (4). Scaling also has a very negative economic impact. Determining when to clean often requires striking a balance between maximizing the quantity of the finished product (raw sugar) from the process and the unit cost of the product. Factory staff must consider all costs to make reasonable economic decisions on when to clean the evaporators’ heat exchangers, and this also should include the impact of fouling on sucrose losses.