What is the role of condensate polishing in combined cycle power plants?

In combined cycle power plants, condensate polishing plays a crucial role in ensuring that the water used in the steam cycle is free of impurities. Combined cycle plants operate by utilizing both gas and steam turbines, and the condensate returned from the steam cycle must be of high purity to prevent scaling and corrosion in the equipment. Condensate polishing systems remove dissolved salts, silica, and other contaminants from the condensate, protecting the boilers and turbines. This not only improves the efficiency of the plant but also extends the lifespan of critical components.