タービン内全温一定膨張燃焼過程の導入によるマイクロガスタービンの高性能化(熱工学,内燃機関,動力など)

In order to improve the thermal efficiency of a micro gas turbine without increasing the temperature, a cycle which includes an isothermal expansion combustion process is proposed. The combustion should prefer entirely to be excuted in a turbine rotor and rather than in a stator to keep the total temperature constant. The cycle analysis indicates that, compared with the conventional gas-turbine cycle, the thermal efficiency of a constant total -temperature expansion combustion gas-turbine cycle is high because a high temperature field can be used for converting thermal energy to mechanical work. Furthermore, another cycle which includes a polytropic expansion combustion process and no isobaric combustion process has a high efficiency close to that of a constant total-temperature expansion combustion cycle. In addition, techniques of fuel injection are briefly discussed.