Q9. a) What is the working principle of a plate type cooler on a ship, and what are its main components? How does it differ from other types of heat exchangers used on ships? (6)
b) What materials are commonly used for the packing in plate type coolers on board ships, and how do these materials impact the efficiency and durability of the cooler? (5)
c) Describe the process of back flushing a plate type cooler on a ship. Why is back flushing important, and what potential issues can it prevent or mitigate. (5)
Q1. (a) Describe how leak in a Heat exchanger tube is detected? How to rectify leaky tube? (8)
(b) What are the common methods to enhance heat transfer of heat exchanger? (4)
(c) Describe reasons for poor performance of heat exchanger and actions to rectify the same. (4)
Q9) Sketch and describe a contra flow type heat exchanger for the auxiliary engine applications. (16)
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