Question

Triple effect evaporator is utilised for

• A. Separation of milk
• B. Condensing of milk
• C. Whey separation
• D. Fermentation of milk

Hint:

Associate key equipment with its function: Evaporator = Condensing/Water Removal; Centrifuge/Separator = Separation of components by density (fat, bacteria, impurities); Homogenizer = Fat globule size reduction; Pasteurizer = Heat treatment for safety.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
The question asks for the primary function of a triple-effect evaporator in the dairy industry. An evaporator is a piece of equipment designed to remove water from a liquid.
Step 2: Detailed Explanation:
An evaporator works by boiling a liquid to turn water into vapor, which is then removed, leaving a more concentrated liquid behind. In the dairy industry, this process is known as "condensing" or "concentration".
A "multiple-effect" evaporator (like a double or triple-effect) is a system of multiple evaporators (called effects) linked together to improve energy efficiency. The water vapor produced in the first effect is used as the heating source for the second effect, and so on.
This technology is used to produce condensed milk, evaporated milk, and to pre-concentrate milk before making milk powder.
The other options are incorrect:
(A) Separation of milk (fat from skim milk) is done by a cream separator (centrifuge).
(C) Whey separation from cheese curd is done by draining.
(D) Fermentation of milk is a biochemical process used to make products like yogurt and is done in fermentation tanks.
Step 3: Final Answer:
A triple-effect evaporator is used for the energy-efficient condensing (concentration) of milk by removing water.