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?

<p>Increased concentration of dissolved solids due to water evaporation (D)</p> Signup and view all the answers

What does the degree of scaling primarily depend on?

<p>Concentration of calcium and bicarbonate ions in solution and the pH of the cooling water (A)</p> Signup and view all the answers

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

<p>Corrosion product accumulation (D)</p> Signup and view all the answers

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

<p>Dissolved oxygen in the cooling water (B)</p> Signup and view all the answers

What effect does acidity have on corrosion?

<p>Encourages oxide formation on metal surfaces (A)</p> 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?

<p>Legionella bacteria growth (C)</p> Signup and view all the answers

What can cause deterioration of wooden components in cooling towers?

<p>Biological and chemical attack (B)</p> Signup and view all the answers

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