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A microturbine power generation system includes an electrical generator, a turbine, a compressor and a combustor. Hot expanding gases leaving the combustor are expanded by the turbine. The resulting turbine power is used for driving the compressor and the electrical generator. A recuperator recovers

A microturbine power generation system includes an electrical generator, a turbine, a compressor and a combustor. Hot expanding gases leaving the combustor are expanded by the turbine. The resulting turbine power is used for driving the compressor and the electrical generator. A recuperator recovers heat from a turbine exhaust stream and raises the temperature of compressed air prior to combustion. Fluid injection is accomplished in the system by using one or more nozzles to spray small fluid droplets, on the order of hundreds of microns or less in diameter, into the combustion air either upstream or downstream of the compressor, or both. The evaporative effect of the injected fluid is used to cool the generator components and to increase the effectiveness of the recuperator. The injected fluid also adds mass to the hot, expanding gases entering the turbine.

대표청구항 ▼

[ What is claimed is:] [1.]1. A microturbine power generating system with a maximum power output of about one megawatt comprising:a compressor for compressing a combustion air during system operation;a combustor receiving the combustion air from the compressor, said combustor producing hot, expandin

[ What is claimed is:] [1.]1. A microturbine power generating system with a maximum power output of about one megawatt comprising:a compressor for compressing a combustion air during system operation;a combustor receiving the combustion air from the compressor, said combustor producing hot, expanding gases by igniting a fuel with the combustion air;a turbine receiving the hot, expanding gases, the turbine converting the hot, expanding gases into a mechanical energy and discharging said gases as a turbine exhaust;a power converter operably connected to the turbine, the power converter converting the mechanical energy produced by the turbine into an electrical energy, said power converter located upstream in the combustion air stream from said compressor;a recuperator operably positioned between the compressor and the turbine, the recuperator having cold side passages and hot side passages arranged in a heat transfer relationship, the cold side passages operably connected to the compressor to receive the combustion air downstream of the compressor and the hot side passages operably connected to the turbine to receive the turbine exhaust;a fluid source for supplying an evaporative fluid; andmeans for injecting the evaporative fluid into the combustion air stream upstream of the compressor and the power converter as a micronized fluid;whereby the evaporative fluid cools the power converter.