Why do power stations need cooling towers?
As the name suggests, a cooling tower’s primary function is to lower temperatures – specifically of water, or ‘cooling water’ as it’s known at Drax. Power stations utilise a substantial amount of water in the generation of electricity.
What is the necessity of water cooling plant in thermal power station?
The importance of water for cooling Although power plants require water for several processes (steam cycle, ash handling, flue gas desulfurization systems, among others) most of the water requirements – usually about 90\% of the total – are for cooling purposes.
Why is cooling important for nuclear power plant?
Cooling towers provide an energy efficient and environmentally friendly way of removing heat from this circulating water before it is returned to its source. So while they are so closely identified with nuclear plants, not all nuclear stations use cooling towers, and many non-nuclear plants have them.
How does a power plant cooling system work?
In general, thermoelectric power plants use cooling systems to cool down (condense) steam after it has been used to turn a steam turbine and generate power. Closed-cycle cooling: Water is reused in a closed-cycle cooling systems. Evaporation from a nearby cooling tower removes heat from the power plant.
What cooling system is used in large power plants?
8. What type of cooling system is used in the large power plants? Explanation: In large power plants cooling towers are used in the place of cooling ponds. A cooling tower is a wooden or metallic rectangular structure, with packed baffling devices.
What happens in a cooling station?
A cooling tower is a specialized heat exchanger in which air and water are brought into direct contact with each other in order to reduce the water’s temperature. As this occurs, a small volume of water is evaporated, reducing the temperature of the water being circulated through the tower.
What do you mean by cooling?
Cooling is removal of heat, usually resulting in a lower temperature and/or phase change. Temperature lowering achieved by any other means may also be called cooling. The transfer of thermal energy may occur via thermal radiation, heat conduction or convection.