Energy Engineering -III – Free Udemy Courses

The said course is a continuation of Energy Engineering subject _I and Energy Engineering_ II already uploaded on this Udemy Platform. I am glad to upload the series of Energy Engineering courses as getting a very good response from the students. The said course consists of an Introduction to cooling towers, Types of cooling towers, Cooling towers, Pros and Cons of Each type, Dry Cooling tower concepts, and Cooling ponds.

1.



Importance of cooling tower:

As the name implies Cooling water cools the excess heat from water incurred during industrial operations into the atmosphere. During this, the water and the air come in contact to lower the temperature of the water circulating in various systems. They either use evaporation or cooling of the fluid (water) to do so. The cooling tower nozzles spray the hot water into the “fill media” where there is maximum surface area and this leads to water-air contact. In this way, the water is cooled.

Given more water requirements in Power plants, cooling water plays an important role



in the reduction of water quantity



by reuse of the cooling water circuit, This concept is very useful where water shortage exists.

The methods may differ slightly in different types of cooling towers but the basic method is the same. They mostly use evaporative cooling which can cause a lot of water loss. Therefore, the latest industry has



drift eliminators



for cooling towers.

Most of the cooling towers use evaporative cooling that evaporates small droplets of pure water that give no such harm However there is a loss of liquid droplets that contain chemicals within them which can



affect the environment badl



y.

This can cause pollution but the cooling towers have efficient components known as drift eliminators.



They not only prevent them from damaging the environment but also save water by recycling it.

2. Impact of Thermal Power Plant on the Environment

These plants also consume a large amount of water. Due to these problems, they require a proper Environmental impact assessment before the commencement of the project. Thermal Power Plant affects environmental segments of the surrounding region very badly. Large amounts of SOx, NOx & SPM are generated which damage the environment and are highly responsible for the deterioration of the health of human beings, the animal kingdom as well as plants