Question 4General Subjects - QMED

70% to pass

If both the shell-and-tube lube oil cooler and shell-and-tube jacket water cooler of a diesel engine are sea water-cooled, what statement is true?

ASea water flows through the shells of both the lube oil and jacket water coolers.

BSea water flows through the tubes of the lube oil cooler and through the shell of the jacket water cooler.

CSea water flows through the tubes of the jacket water cooler and through the shell of the lube oil cooler.

DSea water flows through the tubes of both the lube oil and jacket water coolers.

AI Explanation

The correct answer is D) Sea water flows through the tubes of both the lube oil and jacket water coolers. In a shell-and-tube heat exchanger design, the fluid that requires cooling (in this case, the lube oil and jacket water) flows through the tubes, while the cooling medium (sea water) flows through the shell. This configuration maximizes the heat transfer surface area and ensures efficient cooling of the critical engine components. The other answer choices are incorrect because they do not accurately describe the flow path of the sea water in a typical shell-and-tube cooler arrangement for a diesel engine's lube oil and jacket water systems.