Cooling Tower Cold Climate Considerations
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Questions and Answers

What method is sometimes used to prevent the basin water from freezing?

  • Solar panels
  • Thermostatically controlled electric heaters (correct)
  • Wind turbines
  • Hydraulic pumps

How does the indoor tank or dry basin method work in cooling towers?

  • It heats the water in the tower basin
  • It allows water to drain continuously from the tower basin to an indoor storage tank (correct)
  • It increases the water level in the tower basin
  • It pumps water from the indoor tank to the tower basin

What makes wood in cooling towers vulnerable to decay?

  • The presence of nails and screws
  • Oxidizing agents such as chlorine
  • Biological attack by microorganisms
  • Water-soluble extractives leaching away (correct)

What are the main agents causing delignification in wood in cooling towers?

<p>Oxidizing agents and alkaline solutions (C)</p> Signup and view all the answers

How can biological attack on cooling tower wood be controlled?

<p>Use woods with natural resistance to biological attack and treat the wood with preservatives (A)</p> Signup and view all the answers

What action must be taken if heavy ice forms on the inside of a cooling tower?

<p>Directing water flow to the water basin beneath the tower using a bypass line (C)</p> Signup and view all the answers

What is the purpose of using a bypass line in cold weather during startup?

<p>To direct water flow to the water basin beneath the tower (A)</p> Signup and view all the answers

How can airflow control with two-speed or variable speed fan motors reduce heat loss from the cooling water?

<p>By reducing the amount of cold air passing through the tower (A)</p> Signup and view all the answers

What is the purpose of partially bypassing water flow during normal operations in especially cold weather?

<p>To maintain a certain temperature in the water basin (B)</p> Signup and view all the answers

What precaution must be taken when shutting down a cooling tower in cold weather?

<p>Preventing the water basin from freezing (A)</p> Signup and view all the answers

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