TCCA Powerplant Turbine Practice Test

Using de-mineralised water in turbine applications is recommended to mitigate mineral build-up because it effectively removes dissolved minerals and impurities that could otherwise deposit on turbine components, causing corrosion or fouling. De-mineralised water is specifically treated to eliminate ions and minerals that contribute to scaling on turbine blades and other surfaces, which can diminish performance and efficiency.

This approach is important because mineral build-up can lead to operational issues such as reduced heat transfer efficiency and increased maintenance requirements. By utilizing de-mineralised water, which is free from harmful minerals like calcium and magnesium, the risk of scaling and other related problems is significantly lowered, helping maintain optimal turbine function and extending its operational life.

While tap water and spring water may contain various minerals that can lead to build-up, and distilled water, although pure, might not always be as effective or practical in large-scale applications, de-mineralised water is specifically tailored for such needs, making it the most suitable option for water injection in turbines.