In evaporators, lowering the feed temperature_______________?
Correct answer: C. Both A. and B.
- A. Increases the heating area required
- B. Reduces the economy
- C. Both A. and B.
- D. Decreases the heating area required
Explanation
A colder feed requires more sensible heating before evaporation, increasing the required heating area and consuming more steam per unit of water evaporated. Thus both the area requirement rises and steam economy falls.
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