In case of a shell and tube heat exchanger the minimum...

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In case of a shell and tube heat exchanger, the minimum and maximum baffle spacing is respectively (where, D = inside diameter of the shell)

A. $$\frac{{\text{D}}}{5}$$ and D

B. $$\frac{{\text{D}}}{2}$$ and 2D

C. $$\frac{{\text{D}}}{4}$$ and 2D

D. D and 2D

Answer: Option A

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