cross-compound turbine

A cross-compound turbine is a type of steam turbine that utilizes two separate shafts, each connected to its own generator. This arrangement is employed to manage the significant increase in steam volume as it expands through the turbine. To maintain a consistent steam velocity, the flow area must increase substantially. Splitting the low-pressure steam stream into multiple parallel sections, as done in cross-compound turbines, helps to accommodate this expansion without requiring excessively large casings or overly long blades near the turbine's exit. This design is a classification method for large steam turbines, differentiating them from tandem-compound turbines which use a single shaft and generator.1