The ratio of down take area to cross-sectional area of the tube, for calandria type evaporator ranges from_________________?
Correct answer: A. 0.5 to 1
- A. 0.5 to 1
- B. 1 to 1.5
- C. 1.5 to 2
- D. 2 to 2.5
Explanation
In a calandria evaporator, the downcomer or downtake cross-sectional area is typically about 0.5 to 1 times the total tube-flow area. Adequate area is needed to return the concentrated liquid without excessive circulation resistance.
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