The term for the accumulation of deposits inside a heat exchanger is called what?

The term for the accumulation of deposits inside a heat exchanger is called what?

• A. Fouling
• B. Scaling
• C. Corrosion
• D. Erosion

Answer: (A)

When deposits build up on the inside surfaces of a heat exchanger, they create an insulating layer that raises thermal resistance and lowers heat transfer efficiency. This general buildup is called fouling. It covers all kinds of deposits—mineral scale from mineral precipitation, organic or biological growth, and particulate or corrosion products—that accumulate during operation. Scaling is a specific type of fouling caused by mineral deposits, while corrosion or erosion describe material damage or wear rather than just an accumulation of deposits. Since the question refers to the overall accumulation of deposits, fouling is the best term.

When deposits build up on the inside surfaces of a heat exchanger, they create an insulating layer that raises thermal resistance and lowers heat transfer efficiency. This general buildup is called fouling. It covers all kinds of deposits—mineral scale from mineral precipitation, organic or biological growth, and particulate or corrosion products—that accumulate during operation. Scaling is a specific type of fouling caused by mineral deposits, while corrosion or erosion describe material damage or wear rather than just an accumulation of deposits. Since the question refers to the overall accumulation of deposits, fouling is the best term.