Question 26 on professional knowledge in 2014: Condenser selection
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26. Regarding the selection of condensers, which of the following statements is incorrect? (A) For condensing corrosive gases, it is advisable to have the gas flow in the tube side. (B) If the condensate might freeze, it is better to use shell-side condensation. (C) During low-pressure operations, in order to reduce the condensation pressure drop, it is advisable to have the gas flow in the tube side. (D) Under high-temperature conditions, when shell-side condensation is used, special attention must be paid to the expansion and contraction design of the shell side. Why is the answer C rather than B?
The pressure drop in the shell side is smaller than that in the tube side; if reducing the pressure drop is the goal, the fluid should flow through the shell side
Then why is B correct? The condensate may freeze; if it flows through the tube side, it is easier to clean. Why is it better for it to flow through the shell side?
Then why is B correct? The condensate may freeze; if it flows through the tube side, it is easier to clean. Why is it better for it to flow through the shell side?