Which of the following are direct expansion evaporators and flooded evaporators?

Which of the following are direct expansion evaporators and flooded evaporators?


1. bare tube
2. the plate surface
3. the shell and tube
4. the finned tube

a. 1,3
b. 2,3
c. 1,2,4
d. 1,2,3,4

Answer: a


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