A concentric double pipe heat exchanger as compared to the shell and tube heat exchanger for the same heat load requires

A concentric double pipe heat exchanger as compared to the shell and t

1.	A concentric double pipe heat exchanger as compared to the shell and tube heat exchanger for the same heat load requires
A.	less heating surface.
B.	more space.
C.	lower maintenance cost.
D.	none of these.
Answer» C. lower maintenance cost.

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A concentric double pipe heat exchanger as compared to the shell and tube heat exchanger for the same heat load requires

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