Question

Using a multiple-effect evaporator in food concentrate production is mainly to:

• A. Improve the color of the product
• B. Increase the boiling point in each stage
• C. Save energy by reusing heat in successive stages
• D. Add flavors during evaporation

Hint:

Multiple-effect evaporators reduce energy consumption by reusing the heat from one evaporation stage to assist the next, making them highly efficient for concentrating food products.

Answer 1

The Correct Option is C

Multiple-effect evaporators are designed to improve the energy efficiency of food concentrate production. They achieve this by utilizing the steam produced in one stage to heat the next stage, thereby reducing the amount of energy needed for the evaporation process. This process is called "reuse of heat."
- Option (1) "Improve the color of the product" is incorrect. While evaporation can impact the product's characteristics, the primary function of multiple-effect evaporators is energy savings, not color improvement.
- Option (2) "Increase the boiling point in each stage" is incorrect. The boiling point can be influenced by factors such as pressure, but the main goal of a multiple-effect evaporator is energy efficiency, not altering boiling points.
- Option (4) "Add flavors during evaporation" is incorrect. The evaporator does not add flavors; it concentrates the liquid by removing water.
Thus, the correct answer is "Save energy by reusing heat in successive stages" (Option 3).