3970. If ‘D’ is the inside diameter of the shell of a shell and tube heat exchanger, then the baffle spacing is usually in the range of September 7, 2025 by Admin D/2 or minimum 2″ to 5D. D/5 or minimum 2″ to 5D. D/5 or minimum 2″ to D. none of these. ✅ The correct answer is option B.
