13. Design-Point Calculations of Industrial Gas Turbines

The purpose of the design-point calculations for industrial gas turbine engines is to determine the airflow rate, specific fuel consumption, and efficiency for a given power demand. The input data include the ambient conditions, compressor pressure ratio, turbine entry temperature (TET) (or air-fuel ratio in the combustion chamber), and component efficiencies. Based on these calculations, engine components such as the compressor, combustion chamber, and turbine can be designed. Unlike aero engines, size and weight are of secondary importance in the design process. Two cases will be considered: single-shaft and two-shaft gas turbines for stationary applications.