Discussion
Identify the application of straight tube, fixed tubesheet heat exchangers?
Answer: A
The key says that oil coolers are an application of straight tube, fixed tubesheet heat exchangers. In this type the tubes are welded to tubesheets fixed in the shell, so the outside of the tubes cannot be cleaned mechanically, and the type is used where the shell side fluid is clean, as with oil. A fluid that is flammable or toxic in the tubes, or a cooler with water inside the tubes, is not the keyed application, and jacket water coolers are not the keyed application either.
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