The thermal efficiency of a turboprop engine is a measure of how effectively it converts the heat energy from fuel combustion into useful mechanical work. It’s a ratio of the useful work output to the heat input.
Where:
- is the temperature at the end of the adiabatic expansion process (isentropic) in the turbine.
- is the temperature at the beginning of the adiabatic compression process (isentropic) in the compressor.