Isentropic Efficiency
Used to determine machine performance trends and effects of maintenance
activities.
Power Characteristics
The power generation, actual or implied, together with expected generation
at design or clean conditions.
Efficiency/Power Deviation
Load independent comparison relative to design.
Pressure Ratios
Used together with the efficiency curves to determine optimum stage
performance selection.
Steam Velocities
Used as an indicator of the amount of energy removed from the steam
feedstock, from each stage.
Steam Rates
Illustrates changes in performance deviation, relative to isentropic
expansion.
Power Vs Steam
Scatter plot identifies turbine degradation and optimum control regions.
Operating Loss Cost
Tracks current and historical „lost opportunity‟ – both instantaneous and
cumulative.