What is a Condenser ?
A condenser is a device or unit used to condense a substance from its gaseous to its liquid state, typically by cooling it. In so doing, the latent heat is given up by the substance, and will transfer to the condenser coolant.
How is thermal power plant “condenser” is different from other condenser ?
In thermal Power plant we use surface condenser. Surface condenser is the commonly used term for a water-cooled shell and tube heat exchanger installed on the exhaust steam from a steam turbine in thermal power stations.
How does Surface Condenser works ?
The working of a surface condenser is given below
Cross-sectional schematic diagram of a power plant condenser for condensing exhaust steam from a steam turbine. This condenser is single-pass on both the tube and shell sides with a large opening at the top for the exhaust steam to enter and a hotwell at the bottom where condensate water drips down to and collects. Circulating water for cooling is shown in light greenish color and condensate is light blue. Note also that the springs at the condenser support pads or the expansion joint at the turbine exhaust are designed in for thermal expansion and a normal installation includes either one or the other, not both like in this diagram. (wiki)