One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； September 18th
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Single-choice question: The reasons that may lead to a decrease in the heat transfer efficiency of a shell-and-tube heat exchanger could be ( ). A. Fouling or blockage of the tubes B. Increased amount of non-condensable gas or condensate C. Blockage in the pipes or valves D. All of the above Answer: D. All of the above
The reasons that may lead to a decrease in the heat transfer efficiency of a shell-and-tube heat exchanger could be (D. all of the above three situations).
B. Increased non-condensable gas or condensate
The reason for the decrease in the heat transfer efficiency of a shell-and-tube heat exchanger may be (D). A. Fouling or blockage of the tubes B. Increased amount of non-condensable gas or condensate C. Blockage in the pipes or valves D. All of the above three situations