🔍 Key Concepts

• heat exchanger tube erosion mechanisms • relationship between water velocity and metal loss • effect of fouling on flow and heat transfer

💭 Think About

• Think about which condition will cause the cooling water to physically wear away the inside surface of the tubes over time. • Consider how low vs. high water velocity affects both fouling and erosion inside tubes. • Ask yourself: which options mainly affect heat transfer efficiency, and which option can actually remove metal from the tube wall?

✅ Before You Answer

• Identify which choice would increase mechanical scouring of the tube wall by water and entrained particles. • Distinguish between conditions that reduce heat transfer vs. conditions that damage metal surfaces. • Verify which condition is commonly associated with erosion–corrosion in tube bundles.