Question 85General Subjects - 1st Asst/Chief
70% to passThe floating end of a shell-and-tube type cooler utilizes a packing ring to _______________.
Aprevent leakage past the floating end tube sheet
Bmodify to a mixer type cooler
Cdissipate heat
Dbaffle cooling water so it can be directed on a multiple pass
AI Explanation
The correct answer is A) prevent leakage past the floating end tube sheet. The packing ring in a shell-and-tube type cooler is used to form a seal between the floating end tube sheet and the shell, preventing leakage of the cooling medium (typically water) past the tube sheet. This is necessary to ensure the cooling medium flows through the tubes as intended, maximizing the heat transfer efficiency of the cooler. The other answer choices are incorrect because they do not accurately describe the purpose of the packing ring in this type of cooler. Option B is irrelevant, option C is too general, and option D describes a different function of the cooler design.
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