Which type of pump is commonly used in the Auxiliary Machinery Cooling Water system?

The correct choice for the Auxiliary Machinery Cooling Water system is the centrifugal pump. This type of pump is widely used in cooling water applications due to its ability to handle large volumes of water efficiently and maintain a continuous flow, which is crucial for effective cooling of machinery.

Centrifugal pumps operate by converting rotational kinetic energy, typically from a motor, into hydrodynamic energy, creating a flow of liquid. Their design allows for high flow rates and relatively low pressure drops, making them ideal for circulating cooling water in various systems.

In contrast, submersible pumps are designed to work underwater and are more suited for drainage or transfer applications rather than continuous cooling systems. Main feed pumps are responsible for supplying water under pressure to a system, but they are not specific to the cooling water function. While a term like "cooled pump" may suggest a type of pump, it is not commonly recognized in mechanical engineering terminology for cooling applications.

Hence, the use of centrifugal pumps in the Auxiliary Machinery Cooling Water system reflects their efficiency and reliability in managing the necessary fluid dynamics required for effective cooling operations.