Condensers: A condenser is a type of heat exchanger that is used to condense a vapor or gas into a liquid. In the context of power plants, condensers are often used to condense the steam that has passed through a steam turbine. The condensed steam is then pumped back into the boiler, where it can be reused to produce more steam. Condensers are typically cooled by a cooling water system, which helps to remove heat from the condenser and improve its e iciency.