Podcast
Questions and Answers
What is the temperature of the water discharged from a turbo generator typically?
What is the temperature of the water discharged from a turbo generator typically?
- 6oC
- 9oC (correct)
- 12oC
- 15oC
What type of cooling system uses nozzles to create tiny droplets?
What type of cooling system uses nozzles to create tiny droplets?
- Cooling Ponds
- Spray Ponds (correct)
- Cooling Towers
- Dry Cooling Towers
What is the effect of increased temperature of the receiving water?
What is the effect of increased temperature of the receiving water?
- Increase in dissolved oxygen
- Increase in anaerobic conditions
- Increase in natural heat dissipation
- Decrease in natural heat dissipation (correct)
What is the main downside of using a wet cooling tower?
What is the main downside of using a wet cooling tower?
What is created from the water used in thermal power plants?
What is created from the water used in thermal power plants?
Which type of cooling tower does not require water to be lost through evaporation?
Which type of cooling tower does not require water to be lost through evaporation?
Study Notes
- Industries that use turbo generators for steam-electric power typically discharge water that is 6oC to 9oC hotter than the water it is receiving.
- When discharged into the stream or lake, its temperature rises to this point, natural heat dissipation becomes ineffective.
- Municipal sewage water typically has a higher temperature than the water it is discharged into.
- The dissolved oxygen (DO) in the receiving water decreases as its temperature rises, leading to anaerobic conditions.
- In thermal power plants, for the purpose of generating electricity, steam is created from the water that power plants use.
- The water that does not evaporate is returned to its sources such as river, stream, orgroundwater, where it may release a great deal of heat and thus contribute to thermal pollution.
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Description
Explore the concept of thermal pollution and its impact on natural water bodies. Learn about the causes and effects of thermal pollution, particularly in the context of industries and power plants. Understand the implications of elevated water temperatures and decreased dissolved oxygen levels on aquatic ecosystems.
