Diagram of a gas turbine engine INTAKE COMPRESSION COMBUSTION EXHAUST Air Inlet Combustion Chambers Turbine Cold Section Hot section different design for jet plane and electricity generator For electricity generator: the turbine is designed to give larger fraction of its power to the rotating shaft which is connected to the shaft of the generator For aircraft jet engine: the shaft needs only enough power for the compressor fan, the rest of the energy going into kinetic energy of the exhaust gases Advantage: light, inexpensive, respond well to sudden power demand Disadvantage: relative low efficiency(20 to 30%)Diagram of a gas turbine engine different design for jet plane and electricity generator For electricity generator: the turbine is designed to give larger fraction of its power to the rotating shaft which is connected to the shaft of the generator. For aircraft jet engine: the shaft needs only enough power for the compressor fan, the rest of the energy going into kinetic energy of the exhaust gases. Advantage: light, inexpensive, respond well to sudden power demand Disadvantage: relative low efficiency (20 to 30%)