What causes corrosion deposits on the sides of water tubes?

Corrosion deposits on the sides of water tubes primarily result from a chemical reaction between the metal of the tubes and the water, particularly when impurities or oxygen are present. This process, known as corrosion, typically involves the formation of oxides or other compounds that adhere to the metal surface.

Over time, these corrosion products can accumulate, leading to a buildup that not only affects the efficiency of the water tubes but can also potentially lead to structural degradation if not managed properly. The presence of certain conditions, such as pH levels, temperature, and the presence of oxygen, can accelerate this chemical reaction, intensifying the formation of deposits.

In contrast, physical abrasion, improper maintenance, and thermal expansion may influence the overall condition of the water tubes, but they do not specifically cause corrosion deposits. Physical abrasion refers to the wear from mechanical action, while improper maintenance might lead to other issues, but not necessarily corrosion deposits specifically. Thermal expansion relates to changes in temperature and physical structure, but again does not directly create the chemical environment that leads to corrosion.