Using a cooling water temperature of 225°F...

Question 1 / 205eccefa2bacbc34ba4d47a24

Question 1 of 205eccefa2bacbc34ba4d47a24

Using a cooling water temperature of 225°F (107.2°C), instead of 180°F (82.2°C), in an auxiliary diesel engine will __________.

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Question 1 of 20

5eccefa2bacbc34ba4d47a24

Using a cooling water temperature of 225°F (107.2°C), instead of 180°F (82.2°C), in an auxiliary diesel engine will __________.

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🔍 Key Concepts

• Cooling water temperature vs. scale formation in jacket water systems • Effects of cooler cylinder surfaces on sulfuric acid formation from fuel sulfur and water vapor • Relationship between engine thermal efficiency and cooling water temperature

💭 Think About

• Think about what happens to mineral scale formation when metal and water temperatures are higher or lower. Does hotter water cause more or less scale? • Consider how sulfur in fuel combines with water to form sulfuric acid. Are cooler or hotter metal surfaces more likely to let this acid condense and attack the metal? • How does raising jacket water temperature generally affect engine efficiency and heat rejection? Would that normally raise or lower specific fuel consumption?

✅ Before You Answer

• Verify how scale typically forms in boilers and cooling systems in relation to temperature. • Recall that sulfuric acid condensation in exhaust and cylinder areas is related to low metal temperatures and dew point of the gases. • Consider whether smaller water passages are a design outcome or an operational result of changing water temperature in an already-built engine.

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Question 1 of 20

Using a cooling water temperature of 225°F (107.2°C), instead of 180°F (82.2°C), in an auxiliary diesel engine will __________.

reduce the probability of scale formation in the jacket cooling passages

reduce the opportunity for the formation of sulfuric acid in the cylinder bore exhaust passages

allow for smaller water passages within the engine

increase fuel consumption per horsepower hour

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Question 1 / 205eccefa2bacbc34ba4d47a24

Question 1 of 205eccefa2bacbc34ba4d47a24

Using a cooling water temperature of 225°F (107.2°C), instead of 180°F (82.2°C), in an auxiliary diesel engine will __________.

Back

Question 1 of 20

5eccefa2bacbc34ba4d47a24

Using a cooling water temperature of 225°F (107.2°C), instead of 180°F (82.2°C), in an auxiliary diesel engine will __________.

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed