Question

Which of the following evaporators is always kept filled with liquid refrigerant?

• A. \(\text{Plate}\)
• B. \(\text{Fin and tube}\)
• C. \(\text{Flooded}\)
• D. \(\text{Dry expansion}\)

Hint:

Flooded evaporators provide maximum efficiency by ensuring constant liquid refrigerant contact with the heat exchanger surfaces.

Answer 1

The Correct Option is C

Step 1: Understanding types of evaporators.
- Flooded evaporators are designed to be fully filled with liquid refrigerant to ensure efficient heat transfer from the surroundings.

Step 2: Explanation of incorrect options.
- (A) Plate and (B) Fin and tube evaporators: These are commonly used in heat exchangers but do not remain fully filled with liquid refrigerant.
- (D) Dry expansion evaporators: These allow for controlled flow of refrigerant, but they are not continuously filled with liquid.

Step 3: Selecting the correct option.
Since flooded evaporators are always filled with liquid refrigerant, the correct answer is (C) Flooded.