Process Equipment and Plant Design

361. With increase in temperature drop (in a shell and tube heat exchanger), the LMTD correction factor, FT

1. Decreases very rapidly
2. Increases very rapidly
3. Remains constant
4. Increases linearly

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362. With increase in the reflux ratio for a fixed production from a continuous binary distillation column, the _________ decreases.

1. Fixed charges initially
2. Running cost of cooling water for condenser
3. Vapour & liquid load both
4. Running cost of steam for reboiler

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