What is the main function of a steam turbine?

The main function of a steam turbine is to convert steam energy into mechanical work. In a steam turbine, high-pressure steam is directed onto blades attached to a rotor. As the steam expands and moves through the turbine, it causes the rotor to spin, thereby transforming the thermal energy of the steam into rotational mechanical energy. This mechanical work can then be utilized to drive generators for electricity production or to power various types of machinery.

In the context of a steam turbine's operation, increasing the pressure of steam would be a separate function typically associated with steam boilers or pumps rather than the turbine itself. Condensing steam back into water is the function of a condenser, which follows the turbine in a typical steam cycle. Storing thermal energy is related more to systems like thermal energy storage tanks rather than the function of the steam turbine. Therefore, focusing on the steam turbine's role, it is clear that its primary purpose is to harness steam energy and convert it into useful mechanical work.