초록 ▼

A gas turbine including at least a compressor, a combustor, and a turbine is constructed to operate at a preferred thermal efficiency in predetermined compressor and turbine flow pressure ratios. A fluid, such as steam, for example produced by waste heat and pressurized as water, and characterized a

A gas turbine including at least a compressor, a combustor, and a turbine is constructed to operate at a preferred thermal efficiency in predetermined compressor and turbine flow pressure ratios. A fluid, such as steam, for example produced by waste heat and pressurized as water, and characterized as having a higher specific heat at constant pressure than effluent from the combustor is introduced into such effluent to provide a turbine operating medium of improved potential to transfer energy downstream of the combustor. Such injection provides effective variable geometry to the system. This injection system maintains such pressure flow ratios substantially independent of engine power output.

대표청구항 ▼

In a gas turbine engine system comprising a gas turbine engine which includes, in operating series, a compressor, a combustor, and a turbine, the combustor generating a gaseous combustor effluent; a supply of fluid having a specific heat at constant pressure (Cp) greater than the Cp of the combustor

In a gas turbine engine system comprising a gas turbine engine which includes, in operating series, a compressor, a combustor, and a turbine, the combustor generating a gaseous combustor effluent; a supply of fluid having a specific heat at constant pressure (Cp) greater than the Cp of the combustor effleunt; fluid introduction means to introduce the fluid from the supply of fluid into the engine; fluid control means operatively connected with the fluid introduction means to control the introduction of fluid into the engine; and a system control; the combination wherein: the engine is designed and constructed to operate without fluid introduction as a gas turbine engine at a preferred thermal efficiency range in a predetermined preferred compressor flow pressure ratio range and in a predetermined preferred turbine flow pressure ratio range; and the system control includes: (a) compressor sensing means to sense actual compressor operating parameters sufficient to identify the operating compressor flow pressure ratio and to generate a compressor control signal related to the operating compressor flow pressure ratio, (b) turbine sensing means to sense actual turbine operating parameters sufficient to identify the operating turbine flow pressure ratio and to generate a turbine control signal related to the operating turbine flow pressure ratio, and (c) means to transmit the compressor control signal and the turbine control signal to the system control; the system control futher including means to compare the sensed and transmitted compressor control signal and the turbine control signal with the predetermined compressor and turbine preferred flow pressure ratio ranges, and means to operate the fluid control means to modulate introduction of the fluid into the engine to maintain the operating flow pressure ratios of the compressor and of the turbine in the predetermined preferred ranges.