According to the illustrated main and...

According to the illustrated main and...

Question 1 of 2921866636ef128f7522a1c52350f

According to the illustrated main and auxiliary diesel engine cooling water systems diagram, which of the following heat exchangers uses high temperature fresh water (jacket water) as a source of heat? Illustration MO-0129

Question 1 of 29218

Q

According to the illustrated main and auxiliary diesel engine cooling water systems diagram, which of the following heat exchangers uses high temperature fresh water (jacket water) as a source of heat? Illustration MO-0129

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🔍 Key Concepts

• Follow the legend for line types to distinguish jacket cooling water from central cooling water and sea water. • Trace the high-temperature jacket water outlet from the main engine and see which heat exchanger it feeds before returning to the system. • Think about which listed device normally needs heat input rather than cooling in typical ship systems.

💭 Think About

• Looking at the diagram, which of the four options is actually shown as being in the jacket water circuit (same dashed line style as the jacket water leaving the engine)? • Among the choices, which piece of equipment in real-world engine rooms is usually heated by jacket water instead of being cooled by it? • Does the flow to that unit come before or after the jacket water cooler and thermostatic valve, and what does that tell you about the water temperature?

✅ Before You Answer

• Verify which component is connected with jacket cooling water line type (not sea water, not central cooling water). • Confirm that the arrows show jacket water entering and leaving that unit as a heating medium, not as a cooled medium. • Double-check that the unit’s purpose matches using hot jacket water as a heat source (i.e., it needs heat to operate, not cooling).