Natural Draft Cooling Towers

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What are the two classes of cooling towers based on the method of air circulation?

Atmospheric towers and chimney towers

Reinforced concrete and large open spaces

Water distribution and fill

Natural draft and mechanical draft (correct)

In which type of cooling tower is the air movement through the tower dependent on atmospheric conditions?

Atmospheric towers (correct)

Mechanical draft towers

Reinforced concrete towers

Chimney towers

Where are chimney towers mainly used?

Residential areas

Locations with relatively constant winds

Large generating stations (correct)

Small industrial sites

What is the majority of the tower height made of in chimney towers?

Purely chimney to induce natural convection airflow Signup and view all the answers

What is noticeable at the top of chimney towers in use at thermal generating stations?

Water vapour carrying sensible and latent heat Signup and view all the answers

What is the purpose of the water falling from the distribution flume or spray nozzles in the cooling tower?

To enhance the process of evaporation and cooling Signup and view all the answers

What should be done to ensure continuous effective operation of the cooling tower?

Regular inspection and maintenance schedule Signup and view all the answers

What could be a probable cause of high discharge water temperature from the tower?

High ambient air temperature Signup and view all the answers

What may cause a reduction in water flow in the cooling tower?

Restrictions created by algae, scale, or dirt Signup and view all the answers

What can cause the tower basin or sump to overflow?

Clogged sump screen or restriction in water outlet piping Signup and view all the answers

Natural Draft Cooling Towers

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Questions and Answers

What are the two classes of cooling towers based on the method of air circulation?

In which type of cooling tower is the air movement through the tower dependent on atmospheric conditions?

Where are chimney towers mainly used?

What is the majority of the tower height made of in chimney towers?

What is noticeable at the top of chimney towers in use at thermal generating stations?

What is the purpose of the water falling from the distribution flume or spray nozzles in the cooling tower?

What should be done to ensure continuous effective operation of the cooling tower?

What could be a probable cause of high discharge water temperature from the tower?

What may cause a reduction in water flow in the cooling tower?

What can cause the tower basin or sump to overflow?

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