how does a cooling tower work in power plant
The cooling tower is widely used in power generation plants. The cooling towers work on the principle of evaporative cooling.
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As the temperature of the water vapour cools in the air above the liquid it condenses into droplets.
. How Cooling Towers Work. These large towers recover the warmed water which then continues to be circulated where chemistry is permitting. Looks white like a cloud because is is in fact a small artificial cloud.
Cooling towers work by evapourating water which takes heat with it. The air when comes in the contact with the hot water It takes the latent heat of the water and makes it cool. This type of cooling tower is called an Induced or Force Draft cooling tower.
Water is pumped from the lake into the cooling tower basin. Also after taking the heat from the hot water the temperature of the air increases and it makes some of the water evaporate and it further cools the water to lower temperature. The water is then sprayed through the hollow core of the cooling tower onto a grid in the center of the tower.
Cooling towers are a special type of heat exchanger that allows water and air to come in contact with each other to lower the temperature of the hot water. This water then circulates through the plants condenser tubes absorbs heat from the steam and travels back to the cooling tower. Air enters the lower portion of the tower and contacts the water in a counter-current manner to help maximize heat transfer.
They are used to transfer heat and cool the water. Most cooling towers use an electrical fan motor to create an air draft or airflow through the cooling tower. For any efficient power plant to function at its optimum level cooling towers form an essential unit.
Large cooling towers like those at nuclear power plants rely on a natural draft or flow of air through the cooling tower. Same as boiling water where the steam contains heat. The cooled water collects in a sump for return to the heat exchangers.
In a cooling tower heat is transferred via sensible heat and latent heat. With cooling towers most of the heat is transferred to the atmosphere through recirculating cooling water. Air comes in from the sides of the tower and passes through the falling water.
Heat transfer related to changes in physical state. The air effectively hijacks waste. A cooling tower is designed to remove heat from a building or facility by spraying water down through the tower to exchange heat into the inside of the building.
The warmed water about 40C is pumped into the tower and sprayed out of a set of sprinklers onto a large volume of plastic packing where it is cooled by the air naturally drawn. To do this they have cooling towers of which at Drax there are 12. Heat transfer related to changes in water temperature.
Wet cooling towers or evaporative cooling towers operate on the principle of evaporative cooling. However this is only effective on certain very large cooling towers. Cooling Towers Explained How Does A Cooling Tower Work Engineeringclicks This is an ideal video for HVAC Power Plant Engine.
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