# Chapter 8 - Exercises: Things Engineers Think About: 9

Fouling consists of material like silt, marine microorganisms , mineral deposits,etc. Fouling adds a layer of thermal resistance to between the water side and the steam side, because fouling consists of materials low on thermal conductivity. This decreases the Heat transfer rate between steam and water. Hence it is important to get rid of fouling on a regular basis.

#### Work Step by Step

Fouling consists of material like silt, marine microorganisms , mineral deposits,etc. Fouling adds a layer of thermal resistance to between the water side and the steam side, because fouling consists of materials low on thermal conductivity. This decreases the Heat transfer rate between steam and water. Hence it is important to get rid of fouling on a regular basis.

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