What is condenser and how does work steam power station?
Condenser: A condenser is a device which condenses the steam at the exhaust of turbine. It serves two important functions. Firstly,it creates a very low pressure at the exhaust of turbine,thus permitting expansion of the steam in the prime mover to a very low pressure. This helps in converting heat energy of steam into mechanical energy in the prime mover. Secondly, the condensed steam can be used as feed water to the boiler. There are two types of condensers, namely
1. Jet condenser
2. Surface condenser
Jet condenser: In Jet condenser, cooling water and exhausted steam are mixed together. Therefore, the temperature of cooling water and condensate is the same when leaving the condenser.
Surface condenser: In surface condenser, there is no direct contact between cooling water and exhausted steam. It consists of a bank of horizontal tubes enclosed in a cast iron shell. The cooling water flows through the tubes and exhausted steam over the surface of the tubes. The steam gives up its heat to water and is itself condensed.
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