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10 Questions

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Cooling Tower Water Problems

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Questions and Answers

What can happen if impurities in cooling water are left untreated?

Increased operating costs and equipment failure (correct)

Decreased operating costs and improved equipment condition

Decreased operating costs and equipment failure

No change in operating costs and equipment condition

What are the sources of impurities in cooling water?

Industrial waste, contact with the ground, and rainwater

Avian waste, industrial waste, and raw make-up water

Treated water, contact with the atmosphere, and ocean water

Avian waste, contact with the atmosphere, and raw make-up water (correct)

What problem can be caused by the deposition of solids (scaling) in cooling towers?

Wood deterioration

Corrosion (correct)

Plugging or erosion of equipment

Biological fouling

What leads to the deposition of solids (scaling) in condensers and on cooling tower evaporative surfaces?

Increased concentration of dissolved solids due to water evaporation Signup and view all the answers

What does the degree of scaling primarily depend on?

Concentration of calcium and bicarbonate ions in solution and the pH of the cooling water Signup and view all the answers

What can cause loss of heat transfer efficiency in cooling systems?

Corrosion product accumulation Signup and view all the answers

What is the principal cause of steel corrosion in cooling towers?

Dissolved oxygen in the cooling water Signup and view all the answers

What effect does acidity have on corrosion?

Encourages oxide formation on metal surfaces Signup and view all the answers

What is a substantial threat found in cooling towers due to warm water, abundant sunlight, and an oxygen-rich environment?

Legionella bacteria growth Signup and view all the answers

What can cause deterioration of wooden components in cooling towers?

Biological and chemical attack Signup and view all the answers